MAX4462 Maxim, MAX4462 Datasheet

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MAX4462

Manufacturer Part Number
MAX4462
Description
The MAX4460/MAX4461/MAX4462 are instrumentation amplifiers with precision specifications, low-power consumption, and excellent gain-bandwidth product
Manufacturer
Maxim
Datasheet

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The MAX4460/MAX4461/MAX4462 are instrumentation
amplifiers with precision specifications, low-power con-
sumption, and excellent gain-bandwidth product.
Proprietary design techniques allow ground-sensing
capability combined with ultra-low input current and
increased common-mode rejection performance. These
rail-to-rail output instrumentation amplifiers are offered in
fixed or adjustable gains and the option for either a shut-
down mode or a pin to set the output voltage relative to
an external reference (see the Ordering Information and
Selector Guide).
The MAX4460 has an adjustable gain and uses ground
as its reference voltage. The MAX4461 is offered in fixed
gains of 1, 10, and 100, uses ground as its reference volt-
age, and has a logic-controlled shutdown input. The
MAX4462 is offered in fixed gains of 1, 10, and 100 and
has a reference input pin (REF). REF sets the output volt-
age for zero differential input to allow bipolar signals in
single-supply applications.
The MAX4460/MAX4461/MAX4462 have high-impedance
inputs optimized for small-signal differential voltages. The
MAX4461/MAX4462 are factory trimmed to gains of 1, 10,
or 100 (suffixed U, T, and H) with ±0.1% accuracy. The
typical offset of the MAX4460/MAX4461/MAX4462 is
100µV. All devices have a gain-bandwidth product of
2.5MHz.
These amplifiers operate with a single-supply voltage
from 2.85V to 5.25V and with a quiescent current of only
700µA (less than 1µA in shutdown for the MAX4461). The
MAX4462 can also be operated with dual supplies.
Smaller than most competitors, the MAX4460/
MAX4461/MAX4462 are available in space-saving 6-pin
SOT23 and TDFN packages.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
19-2279; Rev 4; 3/06
Selector Guide appears at end of data sheet.
Pin Configurations appear at end of data sheet.
________________________Applications
Industrial Process Control
Strain-Gauge Amplifiers
Transducer Interface
Precision Low-Side Current Sense
Low-Noise Microphone Preamplifier
Differential Voltage Amplification
Battery-Powered Medical Equipment
________________________________________________________________ Maxim Integrated Products
SOT23, 3V/5V, Single-Supply, Rail-to-Rail
General Description
Instrumentation Amplifiers
♦ Tiny 6-Pin SOT23 and TDFN Packages
♦ Input Negative Rail Sensing
♦ 1pA (typ) Input Bias Current
♦ 100µV Input Offset Voltage
♦ Rail-to-Rail Output
♦ 2.85V to 5.25V Single Supply
♦ 700µA Supply Current
♦ ±0.1% Gain Error
♦ 2.5MHz Gain-Bandwidth Product
♦ 18nV/√Hz Input-Referred Noise
+Denotes lead-free package.
*EP = Exposed paddle.
Ordering Information continued at end of data sheet.
MAX4460ETT+T
MAX4460EUT-T
MAX4460ESA
MAX4461UETT+T
MAX4461UEUT-T
MAX4461UESA
MAX4461TETT+T
MAX4461TEUT-T
MAX4461TESA
MAX4461HETT+T
MAX4461HEUT-T
MAX4461HESA
Typical Application Circuits continued at end of data sheet.
PART
Typical Application Circuits
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Ordering Information
RANGE
TEMP
V
V
CM
CM
+ ∆V
- ∆V
3
4
V
PIN-
PACKAGE
6 TDFN-EP*
6 SOT23-6
8 SO
6 TDFN-EP*
6 SOT23-6
8 SO
6 TDFN-EP*
6 SOT23-6
8 SO
6 TDFN-EP*
6 SOT23-6
8 SO
CC
5
2
6
MAX4462
Features
1
REF
OUT
+ANK
AASS
+ANJ
AASU
+ANL
AASV
AAST
+ANI
MARK
TOP
1

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MAX4462 Summary of contents

Page 1

... The MAX4462 is offered in fixed gains of 1, 10, and 100 and has a reference input pin (REF). REF sets the output volt- age for zero differential input to allow bipolar signals in single-supply applications ...

Page 2

... SO (derate 5.9mW/°C above +70°C)..................470mW 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— ...

Page 3

... DIFF IN+ MAX4460 is configured for 200kΩ to GND PARAMETER SYMBOL Gain Error Nonlinearity (Note 1) Maximum Capacitive Load -3dB Bandwidth BW Gain-Bandwidth Product Slew Rate Settling Time ELECTRICAL CHARACTERISTICS—MAX4460/MAX4461 ( DIFF IN+ MAX4460 is configured for 200kΩ ...

Page 4

SOT23, 3V/5V, Single-Supply, Rail-to-Rail Instrumentation Amplifiers ELECTRICAL CHARACTERISTICS—MAX4460/MAX4461 (continued 5V 0V DIFF IN+ MAX4460 is configured for 200kΩ to GND PARAMETER SYMBOL ...

Page 5

... OH (Note 10kΩ 100kΩ (Note 10kΩ (Note 1V/V, MAX4462UESA G = 10V/V, MAX4462TESA R = 10kΩ 100V/V, MAX4462HESA MAX4462_EUT/MAX4462_ETT R = 10kΩ -100mV DIFF IN+ IN- MIN TYP MAX UNITS 2.85 5.25 V 0.8 1.1 mA 0.68 0.9 ±50 ±250 µV ±100 ± ...

Page 6

... DD A CONDITIONS No sustained oscillations 1V/V, MAX4462U C = 100pF G = 10V/V, MAX4462T -3dB 100V/V, MAX4462H C = 100pF 1V/V, MAX4462U C = 100pF G = 10V/V, MAX4462T 100V/V, MAX4462H G = 1V/V, MAX4462U C = 100pF within 0. 10V/V, MAX4462T S final value G = 100V/V, MAX4462H / 100kΩ / CONDITIONS ...

Page 7

... SOT23, 3V/5V, Single-Supply, Rail-to-Rail ELECTRICAL CHARACTERISTICS—MAX4462 (continued 5V 0V REF -100mV to +100mV for and G = 10, -20mV to +20mV for G = 100.) (Note 5) IN+ IN- PARAMETER SYMBOL Output Voltage Swing Gain Error Nonlinearity Note 1: Offset Voltage is measured with a best straight-line (BSL) method (see A User Guide to Instrumentation Amplifier Accuracy Specifications section) ...

Page 8

SOT23, 3V/5V, Single-Supply, Rail-to-Rail Instrumentation Amplifiers ( IN- REF -100mV to +100mV for and G = 10, -20mV to +20mV for G = ...

Page 9

... OUTPUT CURRENT (mA) GAIN BANDWIDTH vs. TEMPERATURE 100V 10M -40 - TEMPERATURE (°C) DIFF MAX4462H NORMALIZED OUTPUT ERROR vs. COMMON-MODE VOLTAGE 0. +2.5V -2. 0. 20mV DIFF 0.16 OUT G = 100V/V 0. REF 0.12 0.10 0.08 0.06 0.04 0. 0.1 0.2 0.3 0.4 0.5 0.6 0.7 V (V) CM OUTPUT SWING LOW vs ...

Page 10

SOT23, 3V/5V, Single-Supply, Rail-to-Rail Instrumentation Amplifiers ( IN- REF -100mV to +100mV for and G = 10, -20mV to +20mV for G = ...

Page 11

... EP — PIN MAX4461 SOT23/TDFN — — PIN MAX4462 SOT23/TDFN — — ______________________________________________________________________________________ Instrumentation Amplifiers NAME OUT Output GND Negative Supply Voltage IN+ Positive Differential Input N ...

Page 12

... The range for V REF 1.7V). For full output-swing capability, optimal perfor- mance is usually obtained with V REF The MAX4460/MAX4461/MAX4462 operate with single- supply voltages of 2.85V to 5.25V possible to use the MAX4462U/T dual-supply configuration with up to ±2. and V , with REF connected to ground ...

Page 13

... Devices with higher gain and with bipolar output such as the MAX4462, can be configured to swing to higher ______________________________________________________________________________________ Instrumentation Amplifiers levels. In these cases, as the output approaches either supply, accuracy may degrade, especially under heavy output loading ...

Page 14

SOT23, 3V/5V, Single-Supply, Rail-to-Rail Instrumentation Amplifiers V OUT IDEAL TRANSFER FUNCTION (LINE) V OUT2 V IN1 OUT1 Figure 3. Transfer Function of an Ideal Instrumentation Amplifier (Straight Line Passing Through the Origin) Looking at this curve, one ...

Page 15

... OFFSET (BSL) = OSL GAIN AND OFFSET WILL BE FACTORY-TRIMMED FOR BEST STRAIGHT LINE Figure 6. To Minimize Nonlinearity Error, the MAX4460/MAX4461/ MAX4462 are Internally Trimmed to Adjust Gain and Offset for the Best Straight Line so NL- = NL+ The individual errors are as follows (0.15%) (10) (100mV) = 1.5mV Offset (BSL) = (250µ ...

Page 16

... For best performance, the output loading should be to the potential seen at REF for the MAX4462 or to ground for the MAX4460/MAX4461. REF Input (MAX4462) The REF input of the MAX4462 can be connected to any voltage from (V + 0.1V voltage-divider with sink and source capability works well to center the output swing at V resistive dividers should be avoided because the 100kΩ ...

Page 17

... Ordering Information (continued) (continued) PART V CC MAX4462UETT+T MAX4462UEUT-T MAX4462UESA MAX4461 5 MAX4462TETT+T 1 MAX4462TEUT-T OUT 6 MAX4462TESA SHDN 2 MAX4462HETT+T MAX4462HEUT-T MAX4462HESA +Denotes lead-free package. *EP = Exposed paddle. SHUTDOWN NO TRANSISTOR COUNT: 421 YES PROCESS: BiCMOS YES YES OUT+ 20kΩ ...

Page 18

... SS DD MAX4462 IN- N. N.C. IN- SO Pin Configurations + 1 OUT 6 FB GND MAX4460 IN+ IN- *EP TDFN + 1 6 OUT SHDN GND MAX4461 3 IN+ 4 IN- *EP TDFN + 1 6 OUT REF MAX4462 3 4 IN+ IN- *EP TDFN + DENOTES LEAD-FREE PACKAGING ...

Page 19

... SOT23, 3V/5V, Single-Supply, Rail-to-Rail (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) PIN 1 INDEX AREA -DRAWING NOT TO SCALE- COMMON DIMENSIONS SYMBOL MIN. A 0.70 D 2.90 E 2.90 A1 0.00 L 0.20 k 0.25 MIN. A2 0.20 REF. ...

Page 20

... D e FRONT VIEW 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. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...

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