MAX4123 Maxim, MAX4123 Datasheet

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MAX4123

Manufacturer Part Number
MAX4123
Description
The MAX4122–MAX4129 family of operational amplifiers combines wide bandwidth and excellent DC accuracy with rail-to-rail operation at the inputs and outputs
Manufacturer
Maxim
Datasheet
1.MAX4122.pdf (16 pages)

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The MAX4122–MAX4129 family of operational amplifiers
combines wide bandwidth and excellent DC accuracy with
Rail-to-Rail
devices require only 650µA per amplifier, and operate from
either a single supply (+2.7V to +6.5V) or dual supplies
(±1.35V to ±3.25V) with a common-mode voltage range
that extends 250mV beyond V
ble of driving 250Ω loads. The MAX4122/MAX4123/
MAX4126/MAX4127/MAX4129 have a 5MHz gain band-
width product, while the decompensated MAX4124/
MAX4125/MAX4128 (stable at closed-looped gains of
10 or greater) have a 25MHz gain bandwidth product. In
addition, the MAX4123/MAX4125/MAX4127 feature a
shutdown mode in which the outputs are placed in a
high-impedance state and the supply current is reduced
to only 25µA per amplifier.
With their rail-to-rail input common-mode range and
output swing, these amplifiers are ideal for low-voltage
single-supply operation. Although the minimum operat-
ing voltage is specified at 2.7V, the devices typically
operate down to 1.8V. In addition, low offset voltage
and high speed make them the ideal signal-condition-
ing stages for precision, low-voltage, data-acquisition
systems. The MAX4122 and MAX4124 come in the
space-saving 5-pin SOT23-5 package.
________________________Applications
19-1087; Rev 1; 8/97
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
MAX4122
MAX4123
MAX4124
MAX4125
MAX4126
MAX4127
MAX4128
MAX4129
PART
Battery-Powered Instruments
Portable Equipment
Data-Acquisition Systems
Signal Conditioning
Low-Power, Low-Voltage Applications
®
operation at the inputs and outputs. These
(MHz)
BW
25
25
25
5
5
5
5
5
________________________________________________________________ Maxim Integrated Products
AMPS
PKG.
PER
General Description
Single-Supply Rail-to-Rail I/O Op Amps
1
1
1
1
2
2
2
4
EE
Selection Table
and V
DOWN
SHUT-
MODE
Yes
Yes
Yes
—
—
—
—
—
CC
. They are capa-
5 SOT23-5
8 SO/µMAX
5 SOT23-5
8 SO/µMAX
8 SO/µMAX
14 SO
8 SO/µMAX
14 SO
PACKAGE
PIN-
Ordering Information continued at end of data sheet.
* Dice are specified at T
Pin Configurations appear at end of data sheet.
__________Typical Operating Circuit
INTERFACE
MAX4122EUK
MAX4123C/D
MAX4123ESA -40°C to +85°C
MAX4123EUA -40°C to +85°C
5-Pin SOT23 Package (MAX4122/4)
+2.7V to +6.5V Single-Supply Operation
Rail-to-Rail Input Common-Mode Voltage Range
Rail-to-Rail Output Voltage Swing
5MHz Gain-Bandwidth Product (MAX4122/3/6/7/9)
25MHz Gain-Bandwidth Product (MAX4124/5/8)
650µA Quiescent Current per Amplifier
25µA Shutdown Function (MAX4123/5/7)
200µV Offset Voltage
No Phase Reversal for Overdriven Inputs
Drive 250Ω Loads
Stable with 500pF Capacitive Loads
Unity-Gain Stable (MAX4122/3/6/7/9)
Stable at Gains ≥ 10V/V (MAX4124/5/8)
SERIAL
PART
3
6
8
7
DOUT
SCLK
CS
SHDN
-40°C to +85°C
TEMP. RANGE
0°C to +70°C
MAX187
A
= +25°C, DC parameters only.
Ordering Information
VREF
GND
V
AIN
DD
1
2
4
5
+5V
5 SOT23-5
Dice*
8 SO
8 µMAX
PACKAGE
PIN-
MAX4123
Features
MARKING
INFO.
AAAZ
—
—
—
1

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MAX4123 Summary of contents

Page 1

... V and V EE ble of driving 250Ω loads. The MAX4122/MAX4123/ MAX4126/MAX4127/MAX4129 have a 5MHz gain band- width product, while the decompensated MAX4124/ MAX4125/MAX4128 (stable at closed-looped gains greater) have a 25MHz gain bandwidth product. In ...

Page 2

... L CC CONDITIONS MAX4123ESA/MAX4125ESA MAX4122EUK/MAX4124EUK MAX4123EUA/MAX4125EUA = MAX4126ESA/MAX4127ESD/MAX4128ESA MAX4126EUA/MAX4128EUA MAX4129ESD = < 1.5V DIFF MAX4123ESA/MAX4125ESA - MAX4122EUK/MAX4124EUK MAX4123EUA/MAX4125EUA < MAX4126ESA/MAX4127ESD/MAX4128ESA + MAX4126EUA/MAX4128EUA MAX4129ESD = 2. OUT 0.25V to 2.45V 100kΩ OUT 0.4V to 2.3V 250Ω OUT 0.25V to 4.75V 100kΩ OUT ...

Page 3

... 100kΩ 250Ω OUT CC /2, SHDN ≥ 2V (or open 0V /2, R tied to V OUT CONDITIONS MAX4123ESA/MAX4125ESA MAX4122EUK/MAX4124EUK MAX4123EUA/MAX4125EUA = MAX4126ESA/MAX4127ESD/MAX4128ESA MAX4126EUA/MAX4128EUA MAX4129ESD = MAX4123ESA/MAX4125ESA - MAX4122EUK/MAX4124EUK EE MAX4123EUA/MAX4125EUA < CM ...

Page 4

... MAX4129 SHDN Logic Threshold MAX4123/MAX4125/MAX4127 SHDN Input Current MAX4123/MAX4125/MAX4127 Operating Supply-Voltage Range Supply Current per Amplifier V CM SHDN < 0.8V, Shutdown Supply Current per Amplifier MAX4123/MAX4125/MAX4127 AC ELECTRICAL CHARACTERISTICS = 0V, SHDN ≥ 2V (or open +2.7V to +6.5V PARAMETER MAX4122/23/26/27/29 Gain-Bandwidth Product MAX4124/25/28 (A MAX4122/23/26/27/29 Phase Margin ...

Page 5

... FREQUENCY (Hz) _______________________________________________________________________________________ = +25°C, unless otherwise noted.) A CONDITIONS Enable /2, CC OUT CC MAX4123/25/27 Disable f = 1kHz f = 1kHz MAX4126/27/28/29 MAX4122/23/26/27/ ≥ 10) MAX4124/25/ +25°C, unless otherwise noted.) A MAX4122/23/26/27/29 GAIN AND PHASE vs. FREQUENCY (WITH C ) LOAD MAX4122/29- +1000 ...

Page 6

Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op Amps (V = + MAX4126/27/28/29 CHANNEL SEPARATION vs. FREQUENCY 130 120 110 100 100 1k ...

Page 7

... 110 R = 10k L 100 500 100 200 300 400 600 OUTPUT VOLTAGE: EITHER SUPPLY (mV) MAXIMUM OUTPUT VOLTAGE vs. TEMPERATURE 300 250 V = 6.5V 200 V = 2.7V 500 CC L 150 100 V = 6.5V 100k (TOP 2.7V 100k (BOTTOM) ...

Page 8

... SMALL-SIGNAL TRANSIENT RESPONSE (INVERTING OUT TIME (200ns/div) MAX4124/25/28 SMALL-SIGNAL TRANSIENT RESPONSE (NONINVERTING + (5mV/div) OUT (50mV/div) TIME (200ns/div) MAX4123 TOTAL HARMONIC DISTORTION AND NOISE vs. PEAK-TO-PEAK SIGNAL AMPLITUDE 0 10kHz SINEWAVE 500kHz LOWPASS FILTER 0. 250 ...

Page 9

... Single-Supply Rail-to-Rail I/O Op Amps (V = + MAX4124/25/28 LARGE-SIGNAL TRANSIENT RESPONSE (NONINVERTING + (200mV/div) OUT (2V/div) TIME (2 s/div) PIN MAX4122 MAX4123 MAX4126 MAX4124 MAX4125 MAX4128 1 6 — — — — — — ...

Page 10

Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op Amps Figure 1a. Reducing Offset Error Due to Bias Current (Noninverting Figure 2. Input Protection Circuit 10 ______________________________________________________________________________________ MAX4122– MAX4129 ...

Page 11

... The minimum output voltage will be within millivolts of ground for single-supply operation where the load is referenced to ground (V ). Figure 3 shows the input EE voltage range and output voltage swing of a MAX4123 connected as a voltage follower. With a +3V supply and the load tied to ground, the output swings from ______________________________________________________________________________________ IN ...

Page 12

Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op Amps 500pF L IN OUT TIME (400ns/div) Figure 5. MAX4122/23/26/27/29 Small-Signal Transient Response with Capacitive Load 1000pF ...

Page 13

... Pulling SHDN high or leaving it floating enables the amplifier. In the dual-amplifier MAX4129, the shutdown functions operate indepen- dently. Figures 13 and 14 show the output voltage and supply current responses of the MAX4123 to a shut- down pulse. ______________________________________________________________________________________ V CC ...

Page 14

... Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op Amps TOP VIEW 1 8 N.C. 2 IN1- 7 MAX4123 MAX4125 3 IN1 SO/ MAX OUT1 1 14 IN1 IN1 MAX4127 N. SHDN1 ______________________________________________________________________________________ OUT MAX4122 V 2 MAX4124 EE 3 IN+ 4 IN- ...

Page 15

... Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op Amps __________________________________________________________Chip Topographies MAX4123/ MAX4125 IN iN OUT 0.036" (0.914mm) TRANSISTOR COUNT: 170 SUBSTRATE CONNECTED ______________________________________________________________________________________ Ordering Information (continued) PART MAX4124EUK MAX4125ESA -40°C to +85°C MAX4125EUA MAX4126ESA MAX4126EUA -40°C to +85°C MAX4127C/D MAX4127ESD MAX4128ESA -40° ...

Page 16

... Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op Amps ________________________________________________________Package Information 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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...

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