19-0265; Rev 2; 9/96 Single/Dual/Quad, Micropower,Single-Supply Rail-to-Rail Op AmpsMAX492/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 PARTTEMP. RANGEPIN-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 MAXINPUT SIGNAL CONDITIONING FOR LOW-VOLTAGE ADC Pin Configurations continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products1For 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
