MAX4238 Maxim, MAX4238 Datasheet

no-image

MAX4238

Manufacturer Part Number
MAX4238
Description
The MAX4238/MAX4239 are low-noise, low-drift, ultra-high precision amplifiers that offer near-zero DC offset and drift through the use of autocorrelating zeroing techniques
Manufacturer
Maxim
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX4238ASA
Manufacturer:
MAXIM
Quantity:
159
Part Number:
MAX4238ASA
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX4238ASA+
Manufacturer:
Maxim
Quantity:
960
Part Number:
MAX4238ASA+T
Manufacturer:
HITACHI
Quantity:
6 246
Part Number:
MAX4238ASA+T
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX4238ATT+T
Manufacturer:
ALLEN
Quantity:
101
Part Number:
MAX4238ATT+T
Manufacturer:
MAXIM
Quantity:
11 385
Part Number:
MAX4238ATT+T
Manufacturer:
MAXIM
Quantity:
11 385
Part Number:
MAX4238ATT+T
Manufacturer:
MAXIM
Quantity:
5 000
Part Number:
MAX4238ATT+T
Quantity:
2 400
Part Number:
MAX4238ATT+T
0
Part Number:
MAX4238AUT
Manufacturer:
MAXIM
Quantity:
2 200
Part Number:
MAX4238AUT
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX4238AUT+T
Manufacturer:
MAXIM
Quantity:
2 500
Part Number:
MAX4238AUT+T
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX4238AUT+T
0
The 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-band-
width product of 1MHz, while the decompensated
MAX4239 is stable with A
6.5MHz. The MAX4238/MAX4239 are available in 8-pin
narrow SO, 6-pin TDFN and SOT23 packages.
19-2424; Rev 3; 8/11
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Thermocouples
Strain Gauges
Electronic Scales
Medical Instrumentation
Instrumentation Amplifiers
STRAIN GAUGE
360Ω
Typical Application Circuit
5V
________________________________________________________________ Maxim Integrated Products
General Description
18kΩ
V
≥ 10V/V and a GBWP of
A
V
18kΩ
= 100
MAX4238/
MAX4239
Ultra-Low Offset/Drift, Low-Noise,
Applications
AIN
ADC
Precision SOT23 Amplifiers
o Ultra-Low, 0.1µV Offset Voltage
o Low 10nV/°C Drift
o Specified over the -40°C to +125°C Automotive
o Low Noise: 1.5µV
o 150dB A
o High Gain-Bandwidth Product
o 0.1µA Shutdown Mode
o Rail-to-Rail Output (R
o Low 600µA Supply Current
o Ground-Sensing Input
o Single 2.7V to 5.5V Supply Voltage Range
o Available in a Space-Saving 6-Pin SOT23 and
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.
Pin Configurations appear at end of data sheet.
MAX4238
MAX4239
MAX4238AUT-T
MAX4238AUT/V+T
MAX4238ASA
MAX4238ATT+T
MAX4239AUT-T
MAX4239AUT/V+T
MAX4239ASA
MAX4239ATT+T
Temperature Range
TDFN Packages
2.0µV (max) at +25°C
2.5µV (max) at -40°C to +85°C
3.5µV (max) at -40°C to +125°C
1MHz (MAX4238)
6.5MHz (MAX4239)
PART
PART
VOL
, 140dB PSRR, 140dB CMRR
MINIMUM STABLE
P-P
Ordering Information
PIN-PACKAGE
6 SOT23
6 SOT23
8 SO
6 TDFN-EP*
6 SOT23
6 SOT23
8 SO
6 TDFN-EP*
from DC to 10Hz
10V/V
L
GAIN
1V/V
= 1kΩ)
Selector Guide
BANDWIDTH
Features
TOP MARK
(MHz)
GAIN
6.5
+ANG
ABAA
+ANH
AAZZ
1
1

Related parts for MAX4238

MAX4238 Summary of contents

Page 1

... An active- low shutdown mode decreases supply current to 0.1µA. The MAX4238 is unity-gain stable with a gain-band- width product of 1MHz, while the decompensated ≥ 10V/V and a GBWP of MAX4239 is stable with ...

Page 2

... OL To either supply GND (Note 2) OUT CC MAX4238 100pF step MAX4239 OUT MAX4238 R = 10k , C = 100pF measured 100kHz MAX4239 MAX4238 R = 10k , C = 100pF phase margin = 60° MAX4239 /2, SHDN = MIN TYP MAX 0 1 GND ...

Page 3

... Shutdown Logic-High Shutdown Logic-Low Shutdown Input Current _______________________________________________________________________________________ Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Amplifiers = 0V / 10kΩ connected to V OUT CC L CONDITIONS MAX4238 R = 10k , C = 100pF phase margin = 60° MAX4239 0.1% (10 bit) 0.025% (12 bit) -1V step 0.006% (14 bit) 0.0015% (16 bit) 0.1% (10 bit) 0.025% (12 bit) ...

Page 4

Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Amplifiers ELECTRICAL CHARACTERISTICS (2.7V ≤ V ≤ 5.5V GND = 0V OUT wise noted.) (Note 5) PARAMETER SYMBOL Input Offset Voltage V Input Offset Drift TCV Common-Mode Input Voltage V ...

Page 5

... -120 GAIN = 60dB -140 R = 10kΩ L -160 C = 0pF L -180 100 1k 10k 100k 20 FREQUENCY (Hz) MAX4238 GAIN AND PHASE vs. FREQUENCY -20 -40 -60 -80 -100 -120 GAIN = 40dB -140 R = 10kΩ L -160 C = 68pF L -180 1M 10M 100 ...

Page 6

... SUPPLY VOLTAGE (V) MAX4238 LARGE-SIGNAL TRANSIENT RESPONSE MAX4238/39 toc15 1000 10µs/div 2kΩ 100pF L OVERVOLTAGE RECOVERY TIME MAX4238/39 toc18 IN 0 50mV/div OUT 500mV/div 0 400µs/div A = 100V 10kΩ 2. -2. 1V/div OUT ...

Page 7

... This noise appears as a constantly changing voltage in series with any signal being measured. The MAX4238/MAX4239 treat 1/f noise as a slow varying offset error, inherently canceling the 1/f noise. SHUTDOWN WAVEFORM MAX4238/39 toc20 ...

Page 8

... CC Applications Information Minimum and Maximum Gain The MAX4238 is a unity-gain stable amplifier with a gain- bandwidth product (GBWP) of 1MHz. The MAX4239 is decompensated for a GBWP of 6.5MHz and is stable with a gain of 10V/V. Unlike conventional operational ampli- fiers, the MAX4238/MAX4239 have a maximum gain specification ...

Page 9

... Added MAX4238 and MAX4239 automotive-qualified parts Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim 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 ...

Related keywords