SP674B

Features:

The SPx74B Series feature standard bipolar and unipolar input ranges of 10V and 20V. Input ranges are controlled by a bipolar offset pin and laser-trimmed for specified linearity, gain and offset accuracy. Power requirements are +5V and +12V to +15V with a maximum dissipation of 150mW at the specified voltages. Conversion times of 8s, 10s, 15s and 25ms are available,as are units with 10, 25 or 50ppm/°C temperature coefficients for flexible matching to specific application requirements.

The SPx74B Series are available in nine product grades for each conversion time. The J and K models are specified over 0°C to +70°C commercial temperature range; the A and B models are specified over the 40°C to +85°C industrial temperature range; the S and T models are specified over the 55°C to +125°C military temperature range. Package options include 28pin CDIP, 28pin plastic DIP (both narrow and wide), 28-pin PLCC and 28pin SOIC.

Specifications

V_CC to Digital Common .................................................. 0 to +16.5V
V_LOGIC to Digital Common .................................................. 0 to +7V
Analog Common to Digital Common .......................................... ±1V
Control Inputs to Digital Common ............... 0.5V to VLOGIC +0.5V
(CE, CS, A0, 12/8, R/C)
Analog Input Voltage Range ........................................... ±FS ±30%
Analog Inputs to Analog Common ........................................ ±16.5V
(REF IN, BIP OFF, 10V_IN)
20V_IN to Analog Common ........................................................ ±24V
REF OUT ................................................. Indefinite short to common
.................................................................... Momentary short to VCC
Power Dissipation ............................................................... 1000mW
Lead Temperature, Soldering ..................................... 300°C, 10Sec
J/C ....................................................................................... 45°C/W
MTBF25°C Ground Base .................................. 2.915 million hours
MTBF125°C Missile Launch ......................... 10.16 thousand hours


Description

The SP574B/674B/1674B/774B (SPx74B) Series are complete 12bit successiveapproximation A/D converters integrated on a single die with tri-state output latches, an internal reference, clock and a samplehold. The new "BSeries" features true Nyquist sampling while maintaining compatibility with prior versions. They are dropin replacements for the older 574A/674A/1674A/774A type devices.