MAX492 Maxim, MAX492 Datasheet - Page 2

• Manufacturer Part Number: MAX492
• Description: The dual MAX492, quad MAX494, and single MAX495 operational amplifiers combine excellent DC accuracy with rail-to-rail operation at the input and output
• Manufacturer: Maxim

The dual MAX492, quad MAX494, and single MAX495
operational amplifiers combine excellent DC accuracy
with rail-to-rail operation at the input and output. Since
the common-mode voltage extends from V
the devices can operate from either a single supply
(+2.7V to +6V) or split supplies (±1.35V to ±3V). Each
op amp requires less than 150µA supply current. Even
with this low current, the op amps are capable of driving
a 1kΩ load, and the input referred voltage noise is only
25nV/√Hz. In addition, these op amps can drive loads in
excess of 1nF.
The precision performance of the MAX492/MAX494/
MAX495, combined with their wide input and output
dynamic range, low-voltage single-supply operation, and
very low supply current, makes them an ideal choice for
battery-operated equipment and other low-voltage appli-
cations. The MAX492/MAX494/MAX495 are available in
DIP and SO packages in the industry-standard op-amp
pin configurations. The MAX495 is also available in the
smallest 8-pin SO: the µMAX package.
________________________Applications
19-0265; Rev 2; 9/96
For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone]
__________Typical Operating Circuit
ANALOG
_______________General Description
INPUT
+5V
INPUT SIGNAL CONDITIONING FOR LOW-VOLTAGE ADC
Portable Equipment
Battery-Powered Instruments
Data Acquisition
Signal Conditioning
Low-Voltage Applications
10k
2
3
MAX495
________________________________________________________________ Maxim Integrated Products
7
4
10k
6
2
AIN
Single-Supply Rail-to-Rail Op Amps
MAX187
(ADC)
GND
V
DD
1
5
SHDN
DOUT
SCLK
REF
CS
Single/Dual/Quad, Micropower,
6
8
7
3
4
CC
4.096V
SERIAL
INTERFACE
to V
EE
,
Ordering Information continued at end of data sheet.
* Dice are specified at T
____________________________Features
_________________Pin Configurations
______________Ordering Information
MAX492CPA
MAX492CSA
MAX492C/D
MAX492EPA
MAX492ESA
MAX492MJA
Pin Configurations continued at end of data sheet.
TOP VIEW
Low-Voltage Single-Supply Operation (+2.7V to +6V)
Rail-to-Rail Input Common-Mode Voltage Range
Rail-to-Rail Output Swing
500kHz Gain-Bandwidth Product
Unity-Gain Stable
150µA Max Quiescent Current per Op Amp
No Phase Reversal for Overdriven Inputs
200µV Offset Voltage
High Voltage Gain (108dB)
High CMRR (90dB) and PSRR (110dB)
Drives 1kΩ Load
Drives Large Capacitive Loads
MAX495 Available in µMAX Package—8-Pin SO
PART
OUT1
NULL
IN1+
IN1+
IN1-
IN1-
V
V
EE
EE
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
TEMP. RANGE
1
2
3
4
1
2
3
4
A
0°C to +70°C
0°C to +70°C
0°C to +70°C
= +25°C, DC parameters only.
DIP/SO/ MAX
MAX492
DIP/SO
MAX495
8
7
6
5
8
7
6
5
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP
PIN-PACKAGE
V
OUT2
IN2-
N.C.
V
OUT
IN2+
NULL
CC
CC
1