MAX4238AUT+T ,Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 AmplifiersElectrical Characteristics(2.7V ≤ V ≤ 5.5V, V = V = 0V, V = V /2, R = 10kΩ connected to V /2, SHDN ..
MAX4239ASA+ ,Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 AmplifiersFeaturesThe MAX4238/MAX4239 are low-noise, low-drift, ultra- ● DC Performance Ideal for High-Precis ..
MAX4239ASA+T ,Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 AmplifiersMAX4238/MAX4239 Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Ampliiers
MAX4239AUT#TG16 ,Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 AmplifiersFeaturesThe MAX4238/MAX4239 are low-noise, low-drift, ultra- ● DC Performance Ideal for High-Precis ..
MAX423CPD ,【15 Volt Chopper Stabilized Operational AmplifierGeneral Description
The MAX420, 421, 422, and 423 are a series of i15V
CMOS chopper-stabilized ..
MAX423EPD ,【15 Volt Chopper Stabilized Operational Amplifierapplications. These devices offer input offset
and drift specification superior to previous "preci ..
MAX809SW , 3-pin microprocessor resets
MAX809T ,3-Pin Microprocessor Reset CircuitsFeaturesThe MAX803/MAX809/MAX810 are microprocessor (µP) Precision Monitoring of +2.5V, +3V, +3.3V ..
MAX809TD , 3-pin microprocessor resets
MAX809TD , 3-pin microprocessor resets
MAX809TEUR ,3-Pin Microprocessor Reset CircuitsMAX803/MAX809/ 3-Pin Microprocessor Reset CircuitsMAX810
MAX809TEUR+ ,3-Pin Microprocessor Reset CircuitsElectrical Characteristics(V = full range, T = -40°C to +105°C (SOT23) or T = -40°C to +125°C (SC70 ..
MAX4238ASA+-MAX4238ASA+T-MAX4238ATT+T-MAX4238AUT#TG16-MAX4238AUT+T-MAX4239ASA+-MAX4239ASA+T-MAX4239AUT#TG16
Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Amplifiers
Pin Configurations appear at end of data sheet.
General DescriptionThe MAX4238/MAX4239 are low-noise, low-drift, ultra-
high precision amplifiers that offer near-zero DC offset
and drift through the use of patented autocorrelating
zeroing techniques. This method constantly measures
and compensates the input offset, eliminating drift over
time and temperature and the effect of 1/f noise. Both
devices feature rail-to-rail outputs, operate from a single
2.7V to 5.5V supply, and consume only 600µA. An active-
low shutdown mode decreases supply current to 0.1µA.
The MAX4238 is unity-gain stable with a gain-bandwidth
product of 1MHz, while the decompensated MAX4239
is stable with AV ≥ 10V/V and a GBWP of 6.5MHz. The
MAX4238/MAX4239 are available in 8-pin narrow SO,
6-pin TDFN and SOT23 packages.
Applications●Thermocouples●Strain Gauges●Electronic Scales●Medical Instrumentation●Instrumentation Ampliiers
Beneits and Features●DC Performance Ideal for High-Precision Sensor InterfaceUltra-Low, 0.1µV Offset Voltage • 2.0µV (max) at +25°C • 2.5µV (max) at -40°C to +85°C • 3.5µV (max) at -40°C to +125°CLow 10nV/°C DriftLow Noise: 1.5µVP-P from DC to 10Hz150dB AVOL, 140dB PSRR, 140dB CMRRHigh Gain-Bandwidth Product • 1MHz (MAX4238) • 6.5MHz (MAX4239)Ground-Sensing InputRail-to-Rail Output (RL = 1kΩ)●Low Power Consumption Reduces System PowerSingle 2.7V to 5.5V Supply Voltage Range600µA Supply Current0.1µA Shutdown Mode
Note: All devices are specified over the -40°C to +125°C oper-ating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed paddle.
/V denotes an automotive-qualified part.
PARTMINIMUM STABLE
GAIN
GAIN
BANDWIDTH
(MHz)MAX42381V/V1
MAX423910V/V6.5
PARTPIN-PACKAGETOP MARK
MAX4238AUT-T6 SOT23AAZZ
MAX4238AUT/V+T6 SOT23—
MAX4238ASA8 SO—
MAX4238ATT+T6 TDFN-EP*+ANG
MAX4239AUT-T6 SOT23ABAA
MAX4239AUT/V+T6 SOT23—
MAX4239ASA8 SO—
MAX4239ATT+T6 TDFN-EP*+ANHMAX4238/
MAX4239
360Ω
STRAIN GAUGE
18kΩ
18kΩ
AIN
AV = 100
ADC
MAX4238/MAX4239Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Ampliiers
Selector Guide
Ordering Information
Typical Application Circuit
Power-Supply Voltage (VCC to GND) .....................................6VAll Other Pins ............................(VGND - 0.3V) to (VCC + 0.3V)
Output Short-Circuit Duration
(OUT shorted to VCC or GND) .............................ContinuousContinuous Power Dissipation (TA = +70°C) 6-Pin Plastic SOT23 (derate 9.1mW/°C above +70°C) ................................727mW 8-Pin Plastic SO (derate 5.88mW/°C above +70°C) ...471mW 6-Pin TDFN-EP (derate 18.2mW above +70°C) .......1454mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°CStorage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) Lead(Pb)-Free Packages ............................................+260°C Packages Containing Lead..........................................+240°C
(2.7V ≤ VCC ≤ 5.5V, VCM = VGND = 0V, VOUT = VCC/2, RL = 10kΩ connected to VCC/2, SHDN = VCC, TA = +25°C, unless
otherwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSInput Offset VoltageVOS(Note 1)0.12µV
Long-Term Offset Drift50nV/1000hr
Input Bias CurrentIB(Note 2)1pA
Input Offset CurrentIOS(Note 2)2pA
Peak-to-Peak Input Noise
VoltageenP-PRS = 100Ω, 0.01Hz to 10Hz1.5µVP-P
Input Voltage-Noise Densityenf = 1kHz30NV/√Hz
Common-Mode InputVoltage RangeVCMInferred from CMRR testVGND
- 0.1
VCC
- 1.3V
Common-Mode Rejection RatioCMRR-0.1V ≤ VCM ≤ VCC - 1.3V (Note 1)120140dB
Power-Supply Rejection RatioPSRR2.7V ≤ VCC ≤ 5.5V (Note 1)120140dB
Large-Signal Voltage GainAVOL
0.05V ≤ VOUT ≤ VCC - 0.05V
(Note 1)RL = 10kΩ1251500.1V ≤ VOUT ≤ VCC - 0.1V
(Note 1)RL = 1kΩ125145
Output Voltage SwingVOH/VOL
RL = 10kΩVCC - VOH410
VOL410
RL = 1kΩVCC - VOH3550
VOL3550
Output Short-Circuit CurrentTo either supply40mA
Output Leakage Current0 ≤ VOUT ≤ VCC, SHDN = GND (Note 2)0.011µA
Slew RateVCC = 5V, CL = 100pF,
VOUT = 2V step
MAX42380.35
V/µsMAX42391.6
Gain-Bandwidth ProductGBWPRL = 10kΩ, CL = 100pF,
measured at f = 100kHz
MAX42381MHz
MAX42396.5
Minimum Stable Closed-LoopRL = 10kΩ, CL = 100pF,
MAX42381V/V
MAX4238/MAX4239Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Ampliiers
Electrical CharacteristicsStresses 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.
Absolute Maximum Ratings
(2.7V ≤ VCC ≤ 5.5V, VCM = VGND = 0V, VOUT = VCC/2, RL = 10kΩ connected to VCC/2, SHDN = VCC, TA = +25°C,
unless otherwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSMaximum Closed-Loop GainRL = 10kΩ, CL = 100pF,
phase margin = 60°
MAX42381000V/VMAX42396700
Settling Time-1V step
0.1% (10 bit)0.50.025% (12 bit)1.0
0.006% (14 bit)1.7
0.0015% (16 bit)2.3
Overload Recovery TimeAV = 10
(Note 4)
0.1% (10 bit)3.30.025% (12 bit)4.1
0.006% (14 bit)4.9
0.0015% (16 bit)5.7
Startup TimeAV = 10
0.1% (10 bit)1.8
0.025% (12 bit)2.6
0.006% (14 bit)3.4
0.0015% (16 bit)4.3
Supply Voltage RangeVCCInferred by PSRR test2.75.5V
Supply CurrentICCSHDN = VCC, no load, VCC = 5.5V600850µASHDN = GND, VCC = 5.5V0.11
Shutdown Logic-HighVIH2.2V
Shutdown Logic-LowVIL0.8V
Shutdown Input Current0V ≤ V SHDN ≤ VCC0.11µA
MAX4238/MAX4239Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Ampliiers
Electrical Characteristics (continued)
Note 1: Guaranteed by design. Thermocouple and leakage effects preclude measurement of this parameter during production
testing. Devices are screened during production testing to eliminate defective units.
Note 2: IN+ and IN- are gates to CMOS transistors with typical input bias current of 1pA. CMOS leakage is so small that it is
impractical to test and guarantee in production. Devices are screened during production testing to eliminate defective units.
Note 3: Leakage does not include leakage through feedback resistors.
Note 4: Overload recovery time is the time required for the device to recover from saturation when the output has been
driven to either rail.
Note 5: Specifications are 100% tested at TA = +25°C, unless otherwise noted. Limits over temperature are guaranteed by design.
(2.7V ≤ VCC ≤ 5.5V, VCM = GND = 0V, VOUT = VCC/2, RL = 10kΩ connected to VCC/2, SHDN = VCC, TA = -40°C to +125°C, unless
otherwise noted.) (Note 5)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSInput Offset VoltageVOS(Note 1)TA = -40°C to +85°C2.5µVTA = -40°C to +125°C3.5
Input Offset DriftTCVOS(Note 1)10nV/°C
Common-Mode Input VoltageRangeVCMInferred from CMRR testVGND
- 0.05
VCC
- 1.4V
Common-Mode Rejection RatioCMRR
VGND - 0.05V ≤
VCM ≤ VCC –
1.4V (Note 1)
TA = -40°C to +85°C115
TA = -40°C to +125°C90
Power-Supply Rejection RatioPSRR2.7V ≤ VCC ≤ 5.5V (Note 1)120dB
Large-Signal Voltage GainAVOL
RL = 10kΩ,0.1V ≤ VOUT≤ VCC - 0.1V
(Note 1)
TA = -40°C to +85°C125
TA = -40°C to +125°C95
RL = 1kΩ
(Note 1)
0.1V ≤ VOUT ≤ VCC - 0.1V,
TA = -40°C to +85°C1200.2V ≤ VOUT ≤ VCC - 0.2V,
TA = -40°C to +125°C80
Output Voltage SwingVOH/VOL
RL = 10kΩ
VCC - VOH20VOL20
RL = 1kΩVCC - VOH100
VOL100
Output Leakage Current0V ≤ VOUT ≤ VCC, SHDN = GND
(Note 3)2µA
Supply Voltage RangeVCCInferred by PSRR test2.75.5V
Supply CurrentICCSHDN = VCC, no load, VCC = 5.5V900µASHDN = GND, VCC = 5.5V2
Shutdown Logic-HighVIH2.2V
Shutdown Logic-LowVIL0.7V
Shutdown Input Current0V ≤ VSHDN ≤ VCC2µA
MAX4238/MAX4239Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Ampliiers
Electrical Characteristics
(VCC = 5V, VCM = 0V, RL = 10kΩ connected to VCC/2, SHDN = VCC, TA = +25°C, unless otherwise noted.)
MAX4238
GAIN AND PHASE vs. FREQUENCYMAX4238/39 toc09
GAIN AND PHASE (dB/DEGREES)100k10k1k
10010M
VCC = 5V
GAIN = 40dB
RL = 10kΩ
CL = 68pF
MAX4238
GAIN AND PHASE vs. FREQUENCYMAX4238/39 toc08
GAIN AND PHASE (dB/DEGREES)100k10k1k
10010M
VCC = 5V
GAIN = 40dB
RL = 10kΩ
CL = 0pF
MAX4238
GAIN AND PHASE vs. FREQUENCY
MAX4238/39 toc07
GAIN AND PHASE (dB/DEGREES)100k10k1k
10010M
VCC = 5V
GAIN = 60dB
RL = 10kΩ
CL = 100pF
MAX4238
GAIN AND PHASE vs. FREQUENCYMAX4238/39 toc06
FREQUENCY (Hz)
GAIN AND PHASE (dB/DEGREES)100k10k1k
10010M
VCC = 5V
GAIN = 60dB
RL = 10kΩ
CL = 0pF
OUTPUT LOW VOLTAGE
vs. OUTPUT SINK CURRENTMAX4238/39 toc05
SINK CURRENT (mA)
OUTPUT LOW VOLTAGE (V)105
VCC = 2.7V
VCC = 5V
OUTPUT HIGH VOLTAGE
vs. OUTPUT SOURCE CURRENTMAX4238/39 toc04
SOURCE CURRENT (mA)
OUTPUT HIGH VOLTAGE (V)105
VOH = VCC - VOUT
VCC = 2.7V
VCC = 5V
OFFSET VOLTAGE
vs. COMMON-MODE VOLTAGEMAX4238/39 toc03
COMMON-MODE VOLTAGE (V)
OFFSET VOLTAGE (
TA = +125° CTA = +25° C
TA = -40° C
OFFSET VOLTAGE vs. SUPPLY VOLTAGEMAX4238/39 toc02
SUPPLY VOLTAGE (V)
OFFSET VOLTAGE (
TA = +125°C
TA = +25°CTA = -40°C
INPUT OFFSET DISTRIBUTIONMAX4238/39 toc01
OFFSET VOLTAGE (µV)
PERCENTAGE OF UNITS (%)
MAX4238/MAX4239Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Ampliiers
Typical Operating Characteristics
(VCC = 5V, VCM = 0V, RL = 10kΩ connected to VCC/2, SHDN = VCC, TA = +25°C, unless otherwise noted.)
OVERVOLTAGE RECOVERY TIMEMAX4238/39 toc18
AV = 100V/V
RL = 10kΩ
400s/div
OUT
1V/div
50mV/div
MAX4239
SMALL-SIGNAL TRANSIENT RESPONSEMAX4238/39 toc17
AV = 10V/V
RL = 2kΩ
10s/div
OUT
500mV/div
50mV/div
MAX4238
SMALL-SIGNAL TRANSIENT RESPONSEMAX4238/39 toc16
AV = 1V/V
RL = 2kΩ
10s/div
OUT
50mV/div
50mV/div
MAX4238
LARGE-SIGNAL TRANSIENT RESPONSEMAX4238/39 toc15
AV = 1V/V
RL = 2kΩ
CL = 100pF
10s/div
OUT
1V/div
1V/div
COMMON-MODE REJECTION RATIO
vs. FREQUENCYMAX4238/39 toc14
FREQUENCY (kHz)
CMRR (dB)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX4238/39 toc13
FREQUENCY (kHz)
PSRR (dB)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAx4238/39 toc12
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (A)321
TA = +125°C
TA = +25°C
TA = -40°C
MAX4239
GAIN AND PHASE vs. FREQUENCYMAX4238/39 toc11
FREQUENCY (Hz)
GAIN AND PHASE (dB/DEGREES)
1E+61E+51E+41E+3
1E+21E+7
VCC = 5V
GAIN = 40dB
RL = 10kΩ
CL = 100pF
MAX4239
GAIN AND PHASE vs. FREQUENCYMAX4238/39 toc10
FREQUENCY (Hz)
GAIN AND PHASE (dB/DEGREES)
1E+61E+51E+41E+3
1E+21E+7
VCC = 5V
GAIN = 40dB
RL = 10kΩ
CL = 0pF
MAX4238/MAX4239Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Ampliiers
Typical Operating Characteristics (continued)
