Datasheet MAX492, MAX494, MAX495 (Maxim) - 2

19-0265; Rev 2; 9/96
Single/Dual/Quad, Micropower, Single-Supply Rail-to-Rail Op Amps MAX492/MAX494/MAX495 _______________General Description ____________________________Features
The dual MAX492, quad MAX494, and single MAX495 ♦
Low-Voltage Single-Supply Operation (+2.7V to +6V)
operational amplifiers combine excellent DC accuracy ♦
Rail-to-Rail Input Common-Mode Voltage Range
with rail-to-rail operation at the input and output. Since ♦
Rail-to-Rail Output Swing
the common-mode voltage extends from VCC to VEE, ♦
500kHz Gain-Bandwidth Product
the devices can operate from either a single supply (+2.7V to +6V) or split supplies (±1.35V to ±3V). Each ♦
Unity-Gain Stable
op amp requires less than 150µA supply current. Even ♦
150µA Max Quiescent Current per Op Amp
with this low current, the op amps are capable of driving ♦
No Phase Reversal for Overdriven Inputs
a 1kΩ load, and the input referred voltage noise is only ♦
200µV Offset Voltage
25nV/√Hz. In addition, these op amps can drive loads in ♦
High Voltage Gain (108dB)
excess of 1nF. ♦
High CMRR (90dB) and PSRR (110dB)
The precision performance of the MAX492/MAX494/ ♦ MAX495, combined with their wide input and output
Drives 1k
Ω
Load
dynamic range, low-voltage single-supply operation, and ♦
Drives Large Capacitive Loads
very low supply current, makes them an ideal choice for ♦
MAX495 Available in µMAX Package—8-Pin SO
battery-operated equipment and other low-voltage appli- cations. The MAX492/MAX494/MAX495 are available in
______________Ordering Information
DIP and SO packages in the industry-standard op-amp pin configurations. The MAX495 is also available in the
PART TEMP. RANGE PIN-PACKAGE
smallest 8-pin SO: the µMAX package.
MAX492
CPA 0°C to +70°C 8 Plastic DIP MAX492CSA 0°C to +70°C 8 SO
________________________Applications
MAX492C/D 0°C to +70°C Dice* Portable Equipment MAX492EPA -40°C to +85°C 8 Plastic DIP Battery-Powered Instruments MAX492ESA -40°C to +85°C 8 SO Data Acquisition MAX492MJA -55°C to +125°C 8 CERDIP Signal Conditioning
Ordering Information continued at end of data sheet.
Low-Voltage Applications *Dice are specified at TA = +25°C, DC parameters only.
__________Typical Operating Circuit _________________Pin Configurations
TOP VIEW +5V OUT1 1 8 VCC 1 IN1- V 2 7 OUT2 DD IN1+ 3 6 IN2- 10k MAX187 VEE 4 5 IN2+ 2 (ADC) MAX492 7 6 DOUT 6 2 8 SERIAL
DIP/SO
AIN SCLK MAX495 INTERFACE 7 ANALOG 3 CS INPUT 4 3 NULL 1 8 N.C. SHDN 4 MAX495 10k REF 4.096V IN1- 2 7 VCC GND IN1+ 3 6 OUT 5 VEE 4 5 NULL
DIP/SO/
µ
MAX INPUT SIGNAL CONDITIONING FOR LOW-VOLTAGE ADC
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
Document Outline not-recomm-data-sheet-coverMAX495.pdf Not Recommended for New Designs