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ADC774
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MFG:AD Package Cooled:DIP D/C:98+

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Part Number: ADC774

MFG: AD

Package Cooled: DIP

D/C: 98+

Description: The ADC774 is a 12-bit successive approximation analog-to-digital converter, utilizing state-of-the-art CMOS and laser-...

ADC774 General Description

The ADC774 is a 12-bit successive approximation analog-to-digital converter, utilizing state-of-the-art CMOS and laser-trimmed bipolar die custom-designed for freedom from latch-up and for optimum AC performance. It is complete with a self-contained +10V reference, internal clock, digital interface for microprocessor control, and three-state outputs.

The reference circuit, containing a buried zener, is lasertrimmed for minimum temperature coefficient. The clock oscillator is current-controlled for excellent stability over temperature. Full-scale and offset errors may be externally trimmed to zero. Internal scaling resistors are provided for the selection of analog input signal ranges of 0V to +10V, 0V to +20V, ±5V, and ±10V.

The converter may be externally programmed to provide 8- or 12-bit resolution. The conversion time for 12 bits is factory set for 8.5ms maximum.

Output data are available in a parallel format from TTLcompatible three-state output buffers. Output data are coded in straight binary for unipolar input signals and bipolar offset binary for bipolar input signals.

The ADC774, available in both industrial and military temperature ranges, requires supply voltages of +5V and ±12V or ±15V. It is packaged in a 28-pin plastic DIP, or a hermetic side-brazed ceramic DIP.

ADC774 Maximum Ratings

V_CC to Digital Common ........................................................................ 0V to +16.5V
V_EE to Digital Common ......................................................................... 0V to 16.5V
V_LOGIC Digital Common ....................................................................... 0V to +7V
Analog Common to Digital Common .................................................... ±1V
Control Inputs (CE, CS, A_O, 12/8, R/C)
    to Digital Common .......................................................................... 0.5V to V_LOGIC +0.5V
Analog Inputs (Ref In, Bipolar Offset, 10V_IN )
    to Analog Common ........................................................................ ±16.5V
20V_IN to Analog Common .................................................................. ±24V
Ref Out .............................................................................................. Indefinite Short to Common,Momentary Short to V_CC
Max Junction Temperature ................................................................ +165°C
Power Dissipation ............................................................................. 1000mW
Lead Temperature (soldering,10s) ................................................... +300°C
Thermal Resistance, _JA: Ceramic ................................................... 50°C/W
                                         Plastic ..................................................... 100°C/W

CAUTION: These devices are sensitive to electrostatic discharge. Appropriate I.C. handling procedures should be followed.

ADC774 Features

COMPLETE 12-BIT A/D CONVERTER WITH REFERENCE, CLOCK, AND 8-, 12-, or 16- BIT MICROPROCESSOR BUS INTERFACE
ALTERNATE SOURCE FOR HI774 A/D CONVERTER: 8.5s Conversion Time, 150ns Bus Access Time
FULLY SPECIFIED FOR OPERATION ON ±12V OR ±15V SUPPLIES
NO MISSING CODES OVER TEMPERATURE:
0°C to +75°C: ADC774J, K
55°C to +125°C: ADC774SH, TH

ADC774 Connection Diagram

ADC774 datasheet

ADC774
PDF/DataSheet Download

Datasheet: ADC774
File Size: 83959 KB
Manufacturer: BurrBrown
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