A29 18 1H oOffset oPoer ailtoail IO OpAmp I/O Op-Amp Maxim Integrated │ 3 ... AC CHARACTERISTICS...
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Transcript of A29 18 1H oOffset oPoer ailtoail IO OpAmp I/O Op-Amp Maxim Integrated │ 3 ... AC CHARACTERISTICS...
General DescriptionThe MAX44290 offers a unique combination of high-speed, precision, and low-voltage operation, making them ideally suited for a large number of signal-processing functions, such as filtering and amplification of signals in portable and industrial equipment.This amplifier features an input offset of less than 50µV and a high-gain bandwidth product of 15MHz while maintaining a low 1.8V supply rail. The devices’ rail-to-rail input/outputs and low noise guarantee maximum dynamic range in demanding applications, such as 12-to-14-bit SAR ADC drivers. Unlike traditional rail-to-rail input structures, input crossover distortion is absent due to an optimized input stage with an ultra-quiet charge pump. The device includes a fast-power-on shutdown mode for further power savings. The operational amplifier operates from a supply range of 1.8V to 5.5V over -40°C to 125°C temperature range, and can operate down to 1.7V over the 0 to 70°C temperature range. It is available in a tiny, 6-bump wafer-level package (WLP), with 0.4mm-pitch.
Benefits and Features Low 1.8V Supply Rail Over the -40°C to +125°C
Range 1.7V Supply Rail Over 0°C to 70°C Range 15MHz Unity-Gain Bandwidth Low 12.7nV/√Hz Input Voltage-Noise Density Low 50µV (max) Input Offset Voltage at +25°C 500fA Low Input Bias Current 750µA Quiescent Current < 1µA Supply Current in Shutdown Low 105dB Total Harmonic Distortion
Applications Notebooks 3G/4G Handsets Portable Medical Instruments Battery-Operated Devices Analog-to-Digital Converter Buffers Transimpedance Amplifiers General-Purpose Signal Processing
Ordering Information appears at end of data sheet.
19-8452; Rev 0; 12/15
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
Pin Configuration Typical Operating Characteristic
0
20
40
60
80
100
120
140
0.01 0.1 1 10 100 1000 10000 100000
OPEN
-LOO
P GA
IN (d
B)
FREQUENCY (kHz)
OPEN-LOOP GAIN vs. FREQUENCYtoc10
+
TOP VIEW
MAX44290
WLP
A3A2A1
B3B2B1
VDD
VSS
SHDN OUT
IN-IN+
Supply Voltage (VDD to VSS) .................................-0.3V to +6VSHDN ......................................................................-0.3V to +6VAll Other Pins ................................ (VSS - 0.3V) to (VDD + 0.3V)Output Short-Circuit Duration to VDD or VSS ............ContinuousContinuous Input Current (any pins) ................................±20mADifferential Input Voltage .......................................................±6V
Continuous Power Dissipation (TA = +70°C) (derate 10.50mW/°C above +70°C) ...........................840 mW Junction-to-Ambient Thermal Resistance (θJA) .....95.15°C/W Junction-to-Case Thermal Resistance (θJC) ...............70°C/W
Operating Temperature Range ......................... -40°C to +125°C Junction Temperature ......................................................+150°CStorage Temperature Range ............................ -65°C to +150°CLead Temperature (soldering, 10s) .................................+300°C
(VDD = 3.3V, VSS = 0V, VIN+ = VIN- = VDD/2, RLOAD = 10kΩ to VDD/2, VSHDN = VDD, TA = - 40°C to +125°C, unless otherwise noted. Typical values are at +25°C.) (Note 2)
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
www.maximintegrated.com Maxim Integrated 2
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Absolute Maximum Ratings (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITSPOWER SUPPLY
Supply Voltage Range VDDGuaranteed by PSRR 1.8 5.5
VOver 0°C < TA < +70°C 1.7 5.5
Power-Supply Rejection Ratio PSRR VCM = VDD/2 82 95 dB
Quiescent Current IDD RLOAD = no load 750 1200 µA
Shutdown Supply Current ISHDN 1 µA
Shutdown Input Low VIL 0.5 V
Shutdown Input High VIH 1.3 V
Output Leakage Current in Shutdown 100 pA
Shutdown Input Bias Current IIL/IIH 1 µA
Shutdown Turn-On Time TSHDNTA = +25°C (Note 3) 14.4 18.9
µs-40°C < TA < +125°C (Note 3) 26.7
Turn-On Time TONTA = +25°C (Note 3) 9.7 15.2
µs-40°C < TA < +125°C (Note 3) 18.4
DC CHARACTERISTICS
Input Common-Mode Range VCM Guaranteed by CMRR test VSS - 0.1
VDD + 1 V
Common-Mode Rejection Ratio CMRR VCM = VSS - 0.1V to VDD + 1V 75 90 dB
Input Offset Voltage (Note 3) VOS
TA = +25°C 10 50
µV-40°C < TA < +125°C after calibration 100
-40°C < TA < +125°C 500
Input Offset Voltage Drift (Note 3) TC VOS 0.8 5 µV/°C
(VDD = 3.3V, VSS = 0V, VIN+ = VIN- = VDD/2, RLOAD = 10kΩ to VDD/2, VSHDN = VDD, TA = - 40°C to +125°C, unless otherwise noted. Typical values are at +25°C.) (Note 2)
Note 2: All devices are 100% production tested at TA = + 25°C. Specifications over temperature are guaranteed by design.Note 3: Guaranteed by design.
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
www.maximintegrated.com Maxim Integrated 3
Electrical Characteristics (continued)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Bias Current (Note 3) IB
TA = +25°C 0.01 0.5
pA-40°C < TA < +85°C 10
-40°C < TA < +125°C 100
Open-Loop Gain AVOL
400mV ≤ VOUT ≤ VDD - 400mV, RLOAD = 10kΩ 100 115 dB
400mV ≤ VOUT ≤ VDD - 400mV, RLOAD = 600Ω 91 100
400mV ≤ VOUT ≤ VDD - 400mV, RLOAD = 32Ω 80
Output Short-CircuitCurrent To VDD or VSS 50 mA
Output Voltage Low VOL VOUT – VSS
RLOAD = 10kΩ to VDD/2 20
mVRLOAD = 600Ω to VDD/2 50
RLOAD = 32Ω to VDD/2 400 700
Output Voltage High VOH VDD – VOUT
RLOAD = 10kΩ to VDD/2 10
mVRLOAD = 600Ω to VDD/2 40
RLOAD = 32Ω to VDD/2 400 800
AC CHARACTERISTICSInput Voltage Noise Density en f = 10kHz 12.7 nV/√Hz
Input Voltage Noise 0.1Hz ≤ f ≤ 10Hz 10 μVP-PInput Capacitance CIN 0.4 pF
Gain-Bandwidth Product GBW 15 MHz
Slew Rate SR AV = 1V/V, VOUT = 2VP-P, 10% to 90% 7 V/µs
Capacitive Loading CLOAD No sustained oscillation, AV = 1V/V 300 pF
Total Harmonic Distortion +Noise THD+NVOUT = 2VP-P, AV = +1V/VRLOAD = 10kW
f = 10kHz -105 dB
Settling Time To 0.01%, VOUT = 2VPK-PK, AV = -1V/V, CLOAD = 30pF 1.7 µs
Output Transient Recovery Time ΔVOUT = 0.2V, VDD = 3.3V, AV = 1V/V, RS = 20Ω, CLOAD = 1nF 1 µs
(TA = +25°C, unless otherwise noted.)
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
Maxim Integrated 4www.maximintegrated.com
0
20
40
60
80
100
120
140
0.01 0.1 1 10 100 1000 10000 100000
OPEN
-LOO
P GA
IN (d
B)
FREQUENCY (kHz)
OPEN-LOOP GAIN vs. FREQUENCYtoc10
0
200
400
600
800
1000
1200
1 10 100 1000 10000 100000
INPU
T VO
LTAG
E NO
ISE
DENS
ITY
(nV/√H
z)
FREQUENCY (Hz)
INPUT VOLTAGE NOISE DENSITYvs. FREQUENCY
toc13
-120
-110
-100
-90
-80
-70
-60
0.01 0.1 1 10 100
THD
(dB)
FREQUENCY (kHz)
TOTAL HARMONIC DISTORTION vs. FREQUENCYVIN = 2VP-P
toc16
VDD = 5.5V
VDD = 3.3V
-120
-100
-80
-60
-40
-20
0
20
0.01 0.1 1 10 100 1000 10000 100000
AC C
MRR
(dB)
FREQUENCY (kHz)
AC CMRR vs. FREQUENCYtoc11
-10
-8
-6
-4
-2
0
2
4
6
8
10
0 8 16 24 32 40 48 56 64
INPU
T VO
LTAG
E NO
ISE
0.1 TO
10Hz
(µV pk
-pk)
TIME (s)
0.1 TO 10Hz INTEGRATED NOISEtoc14
0.1 TO 10Hz: 10µVpk-pk
SMALL SIGNAL TRANSIENT
50mV/div
50mV/div
200ns/div
VIN
VOUT
0
100mV
toc17
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.01 0.1 1 10 100 1000 10000
AC P
SRR
(dB)
FREQUENCY (kHz)
AC PSRR vs. FREQUENCYtoc11
92
94
96
98
100
102
104
106
108
110
0 1 2 3 4 5
THD
(dB)
INPUT AMPLITUDE (V)
TOTAL HARMONIC DISTORTIONvs. INPUT AMPLITUDE
f = 10kHz, VDD = 5.5V, AV = 1V/Vtoc15
LARGE SIGNAL TRANSIENT
500mV/div
500mV/div
100ns/div
VIN
VOUT
0
1V
toc18
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
Maxim Integrated 5www.maximintegrated.com
Typical Operating Characteristics (continied)
0
2
4
6
8
10
12
14
16
0.1 1 10 100
OVER
SHOO
T PE
RCEN
TAGE
(%)
LOAD RESISTANCE (kΩ)
PERCENTAGE OVERSHOOTvs. LOAD RESISTANCE
VIN = 100mVP-P toc19
0
2
4
6
8
10
12
14
-1 -0.75 -0.5 -0.25 0 0.25 0.5 0.75 1
PERC
ENT
OCCU
RANC
E (%
)
INPUT OFFSET VOLTAGE (µV/°C)
INPUT VOS DRIFT HISTOGRAMtoc01c
0.001
0.01
0.1
1
10
100
100 1000 10000 100000
ISOL
ATIO
N RE
SIST
ANCE
(kΩ)
CAPACITIVE LOAD (pF)
STABILITY vs. CAPACITIVE LOAD AND ISOLATION RESISTANCE
toc20
STABLE
UNSTABLE
-60
-40
-20
0
20
40
60
-0.5 0.5 1.5 2.5 3.5 4.5
INPU
T OF
FSET
VOL
TAGE
(µv)
COMMON MODE VOLTAGE (V)
INPUT OFFSET VOLTAGEvs. COMMON MODE VOLTAGE
toc01a
TA = +25°C
TA = -40°C
TA = +125°C
0
2
4
6
8
10
12
-20 -15 -10 -5 0 5 10 15 20
PERC
ENT
OCCU
RANC
E (%
)
INPUT OFFSET VOLTAGE (µV)
INPUT VOS HISTOGRAMtoc01d
0.001
0.01
0.1
1
10
100
100 1000 10000 100000
ISOL
ATIO
N RE
SIST
ANCE
(kΩ)
CAPACITIVE LOAD (pF)
STABILITY vs. CAPACITIVE AND RESISTIVE LOAD
toc21
STABLE
UNSTABLE
-30
-20
-10
0
10
20
30
1.5 2.5 3.5 4.5 5.5
INPU
T OF
FSET
VOL
TAGE
(µv)
SUPPLY VOLTAGE (V)
INPUT OFFSET VOLTAGEvs. SUPPLY VOLTAGE
toc01b
VCOMMON MODE = VDD/2
TA = 25°C
TA = -40°C
TA = 125°C
-100
-80
-60
-40
-20
0
20
40
60
80
100
-0.5 0 0.5 1 1.5 2 2.5 3 3.5
INPU
T BI
AS C
URRE
NT(p
A)
INPUT COMMON MODE VOLTAGE(V)
INPUT BIAS CURRENTvs. INPUT COMMON MODE
toc02
TA = +25°C
T = -40°CTA = -40°C
TA = +85°C
TA = +125°C
(TA = +25°C, unless otherwise noted.)
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
Maxim Integrated 6www.maximintegrated.com
Typical Operating Characteristics (continied)
TURN-ON TIME FROM SHUTDOWN
2V/div
1V/div
4µs/div
VSHDN
VOUT
0
3.3V
toc23
0
50
100
150
200
250
300
0.1 1 10 100
OUTP
UT V
OTLA
GE LO
W (V
OUT-
V SS) (
mV)
ISINK (mA)
OUTPUT VOLTAGE LOWvs. OUTPUT SINK CURRENT
VDD = 5Vtoc03c
TA = +125°C
TA = +25°C
TA = -40°C
0
100
200
300
400
500
600
700
0.01 0.1 1 10 100
OUTP
UT V
OTLA
GE H
IGH
(VDD
-VOU
T) (m
V)
ISOURCE (mA)
OUTPUT VOLTAGE HIGHvs. OUTPUT SOURCE CURRENT
VDD = 3.3Vtoc04b
TA = +125°C
TA = +25°C
TA = -40°C
0
100
200
300
400
500
600
0.01 0.1 1 10 100
OUTP
UT V
OTLA
GE LO
W (V
OUT-
V SS) (
mV)
ISINK (mA)
OUTPUT VOLTAGE LOWvs. OUTPUT SINK CURRENT
VDD = 1.8Vtoc03a
TA = +125°C
TA = +25°C
TA = -40°C
0
100
200
300
400
500
600
700
0.1 1 10 100
OUTP
UT V
OTLA
GE H
IGH
(VDD
-VOU
T) (m
V)
ISOURCE (mA)
OUTPUT VOLTAGE HIGHvs. OUTPUT SOURCE CURRENT
VDD = 1.8Vtoc04a
TA = +125°C
TA = +25°C
TA = -40°C
0
50
100
150
200
250
300
0.1 1 10 100
OUTP
UT V
OTLA
GE H
IGH
(VDD
-VOU
T) (m
V)
ISOURCE (mA)
OUTPUT VOLTAGE HIGHvs. OUTPUT SOURCE CURRENT
VDD = 5Vtoc04c
TA = +125°C
TA = +25°C
TA = -40°C
0
100
200
300
400
500
600
700
0.1 1 10 100
OUTP
UT V
OTLA
GE LO
W (V
OUT-
V SS) (
mV)
ISINK (mA)
OUTPUT VOLTAGE LOWvs. OUTPUT SINK CURRENT
VDD = 3.3Vtoc03b
TA = +125°C
TA = +25°C
TA = -40°C
POWER-UP TIME
2V/div
500mV/div
4ms/div
VDD
VOUT
0
3.3V
toc22
(TA = +25°C, unless otherwise noted.)
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
Maxim Integrated 7www.maximintegrated.com
Typical Operating Characteristics (continied)
1
10
100
1000
-50 0 50 100 150
OUTP
UT V
OTLA
GE LO
W (V
OUT-
V SS) (
mV)
TEMPERATURE (°C)
OUTPUT VOLTAGE LOWvs. TEMPERATURE
toc05A
VDD = 3.3V
RLOAD = 32Ω
RLOAD = 10kΩ
RLOAD = 600Ω
400
500
600
700
800
900
1000
-50 -25 0 25 50 75 100 125 150
QUIE
SCEN
T SU
PPLY
CUR
RENT
(µA)
TEMPERATURE (°C)
QUIESCENT SUPPLY CURRENTvs. SUPPLY VOLTAGE
toc06
VDD = 1.8V
VDD = 3.3V
VDD = 5.5V
1
10
100
1000
-50 0 50 100 150
OUTP
UT V
OTLA
GE H
IGH
(VDD
-VOU
T) (m
V)TEMPERATURE (°C)
OUTPUT VOLTAGE HIGHvs. TEMPERATURE
toc05B
VDD = 3.3V
RLOAD = 32Ω
RLOAD = 10kΩ
RLOAD = 600Ω
0
0.2
0.4
0.6
0.8
1
1.2
-50 0 50 100 150
SHUT
DOW
N SU
PPLY
CUR
RENT
(µA)
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENTvs. TEMPERATURE
VSHDN = VSS toc07
VDD = 1.8VVDD = 3.3V
VDD = 5.5V
80
85
90
95
100
105
110
115
120
125
-50 -25 0 25 50 75 100 125
CMRR
(dB)
TEMPERATURE (°C)
DC CMRR vs. TEMPERATUREtoc08
VDD = 5.5V
VDD = 3.3V VDD = 1.8V
-140
-120
-100
-80
-60
-40
-20
0
-50 -25 0 25 50 75 100 125
PSRR
(dB)
TEMPERATURE(°C)
PSRR vs. TEMPERATUREtoc09
VDD = 3.3VVCM = VDD/2
Detailed DescriptionMAX44290 is a high-speed, low-power operational amplifier (op amp) ideal for signal-processing applications due to the device’s high-precision and low-noise CMOS inputs. The devices self-calibrate on power-up to eliminate effects of temperature and power-supply variation.The device also features a low-power shutdown mode that greatly reduces quiescent current while the device is not operational and recovers in 30μs. The device features auto-calibration at power-up event. The calibration routine takes 10ms.
Crossover DistortionThe device features a low-noise integrated charge pump that creates an internal voltage rail 1V above VDD, which powers the input differential pair of PMOS transis-tors, as shown in Figure 1. Such a unique architecture eliminates crossover distortion common in traditional CMOS input architecture (Figure 2), especially when used in a noninverting configuration, such as for Sallen-Key filters.The charge pump operating frequency lies well above the unity-gain frequency of the amplifier. Because of its high-frequency operation and ultra-quiet circuitry, the charge pump generates little noise, does not require external components, and is entirely transparent to the user.
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
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Pin Configuration
Pin Description
+
TOP VIEW
MAX44290
WLP
A3A2A1
B3B2B1
VDD
VSS
SHDN OUT
IN-IN+
PIN NAME TYPE FUNCTIONA1 VDD Power Positive Supply Voltage
A2 SHDN Analog Input Active-Low Shutdown Input. Connect to VDD for normal operation.
A3 OUTA Analog Output Output
B1 IN+ Analog Input Positive Input
B2 VSS Power Negative Supply Voltage
B3 IN- Analog Input Negative Input
Figure 1. Comparing the Input Structure of the MAX44290 to Standard Op-Amps
Figure 2. Crossover Distortion of Typical Amplifiers
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
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STANDARD INPUT STRUCTURE
INTERNALCHARGE
PUMP
MAX44290 INPUT STRUCTURE
CROSSOVERDISTORTION
MAX44290
TIME
AMPL
IFIE
R OU
TPUT
Applications InformationPower-Up AutotrimThe device features an automatic trim that self-calibrates the input offset voltage (VOS) to less than 50µV of input offset voltage on power-up. This self-calibration feature allows the device to eliminate input offset voltage effects due to power supply and operating temperature variation simply by cycling its power. The auto-trim sequence takes approximately 10ms to complete, and is triggered by an internal power-on-reset (POR) circuitry. During this time, the inputs and outputs are at high impedance and left unconnected. Shutdown OperationThe MAX44290 features an active-low shutdown mode that puts both inputs and outputs into high impedance and substantially lowers the quiescent current to less than 1µA. Putting the output into high impedance allows multiple outputs to be multiplexed onto a single output
line without the additional external buffers. The device does not self-calibrate when exiting shutdown mode and retains its power-up trim settings. Figure 3 shows the device recovers from shutdown in under 30µs. The shutdown logic levels of the devices are independent of supply, allowing the shutdown feature of the device to operate off a 1.8V or 3.3V microcontroller, regardless of supply voltage.
Rail-to-Rail Input/OutputThe input voltage range of the device extends 100mV above VDD and below VSS. The wide input common-mode voltage range allows the op amp to be used as a buffer and as a differential amplifier in a variety of signal processing applications. Output voltage high/low is only 50mV above VSS and below VDD allowing maximum dynamic range in single-supply applications. The high out-put current and capacitance drive capability of the devices make them ideal as an ADC driver and a line driver.
Figure 3. Shutdown Input Operation
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
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TIME
MAX44290OUTPUT
0V
VDD/2
VDD
0V
30µs
FAST RECOVERYAMPLIFIER
ACTIVE
Input Bias CurrentThe MAX44290 features a high-impedance CMOS input stage and a specialized ESD structure that allows low-input bias current operation at low-input, common-mode voltages. Low-input bias current is useful when interfacing with high-impedance sensors. It is also beneficial for designing transimpedance amplifiers for photodiode sensors. This makes the device ideal for ground-referenced medical and industrial sensor applications.
Driver for Interfacing with the MAX11645 ADCThe device’s tiny size and low noise makes them a good fit for driving 12 to 16-bit resolution ADCs in space- constrained applications. The Typical Application Circuits show the MAX44290 amplifier output connected to a lowpass filter driving the MAX11645 ADC. The MAX11645 is part of a family of 3V and 5V, 12-bit and 10-bit, 2-channel ADCs. The MAX11645 offers sample rates up to 94ksps and measures two single-ended inputs or one differential input. These ADCs dissipate 670µA at the maximum sampling rate, but just 6µA at 1ksps and 0.5µA in shutdown. Offered in the ultra-tiny, 1.9mm x 2.2mm WLP and µMAX-8 packages, the MAX11645 ADCs are an ideal fit to pair with MAX44290 in portable applications, where higher resolution is required. Refer to the MAX1069 (14-bit) and MAX1169 (16-bit) ADC families.
( )IN
LOADV 2 R4I 1
R3 R4 R5AND
R2 R4 R5R1 R3
× = × + +
+=
High-Impedance Source/Sensor Preamp ApplicationHigh-impedance sources such as pH sensors and photodiodes in applications require negligible input leakage currents to the input transimpedance/buffer structure. The MAX44290 benefits with clean and precise signal conditioning due to its input structure. The device interfaces to both current-output sensors (photodiodes), and high-impedance voltage sources (piezoelectric sensors). For current output sensors, a trans-impedance amplifier is the most noise-efficient method for converting the input signal to a voltage. High-value feedback resistors are commonly chosen to create large gains, while feedback capacitors help stabilize the amplifier by cancelling any poles introduced in the feedback loop by the highly capacitive sensor or cabling. A combination of low-current noise and low-voltage noise is important for these applications. Care must be taken to calibrate out photodiode dark current if DC accuracy is important. The high bandwidth and slew rate also allow AC signal processing in certain medical photodiode sensor applications such as pulse-oximetry. For voltage-output sensors, a noninverting amplifier is typically used to buffer and/or apply a small gain to the input voltage sig-nal. Due to the extremely high impedance of the sensor output, a low input bias current with minimal temperature variation is very important for these applications.
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
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Figure 4. Sallen Key Filter
Figure 5. Howland Current Pump
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
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+3.3V
MAX44290
MAX11645ADC
15nF
330pF
CORNER FREQUENCY = 10kHz
SALLEN-KEY FILTER
3.3nF
10kΩ 22kΩ 24kΩ
HOWLAND CURRENT PUMP
+5V
CLOAD
R4
MAX44290
RLOAD
R3
R2R1
R5
DAC
Typical Application Circuits
+Denotes a lead(Pb)-free/RoHS-compliant package.
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
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Ordering Information
Chip InformationPROCESS: BiCMOS
Package InformationFor the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
PART TEMP RANGE PIN-PACKAGE PACKAGE COMMENTSMAX44290ANT+ -40°C to 125°C 6 WLP 0.4mm pitch, 0.5mm (max) height
PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.6 WLP N60C1+1 21-100055 Refer to Application Note 1891
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
MAX44290 1.8V, 15MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op-Amp
© 2015 Maxim Integrated Products, Inc. 14
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