REV. B
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AD1376/AD1377
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700 World Wide Web Site: http://www.analog.com
Fax: 617/326-8703 © Analog Devices, Inc., 1997
Complete, High Speed
16-Bit A/D Converters
FUNCTIONAL BLOCK DIAGRAM
PRODUCT DESCRIPTION
The AD1376/AD1377 are high resolution, 16-bit analog-to-
digital converters with internal reference, clock and laser-trim-
med thin-film applications resistors. They are packaged in a
compact 32-pin, ceramic scam sealed (hermetic) dual-in-line
packages (DIP). Thin-film scaling resistors provide bipolar
input ranges of ±2.5 V, ±5 V, ±10 V and unipolar input ranges
of 0 V to +5 V, 0 V to +10 V and 0 V to +20 V.
Digital output data is provided in parallel and serial form with
corresponding clock and status outputs. All digital inputs and
outputs are TTL compatible.
APPLICATIONS
The AD1376/AD1377 are excellent for use in high resolution
applications requiring moderate speed and high accuracy or
FEATURES
Complete 16-Bit Converters with Reference and Clock
60.003% Maximum Nonlinearity
No Missing Codes to 14 Bits over Temperature
Fast Conversion
17 ms to 16 Bits (AD1376)
10 ms to 16 Bits (AD1377)
Short Cycle Capability
Adjustable Clock Rate
Parallel and Serial Outputs
Low Power: 645 mW Typical (AD1376)
585 mW Typical (AD1377)
Industry Standard Pinout
stability over commercial (0°C to +70°C) temperature ranges
(for extended temperature ranges, the pin compatible AD1378
is recommended.) Typical applications include medical and
analytic instrumentation, precision measurement for industrial
robotics, automatic test equipment (ATE), and multichannel
data acquisition systems, servo control systems or anywhere
wide dynamic range is required A proprietary monolithic DAC
and laser-trimmed thin-film resistors guarantee a maximum
nonlinearity of ±0 003% (1/2 LSB
14
.) The converters may be
short cycled to achieve faster conversion times – 15 µs to 14 bits
for the AD1376, or 8 µs to 14 bits for the AD1377.
PRODUCT HIGHLIGHTS
1. The AD1376/AD1377 provides 16-bit resolution with a maxi-
mum linearity error of ±0.003% (1/2 LSB
14
) at +25°C.
2. AD1376 conversion time is 14 µs (typical) short cycled to 14
bits, and 16 µs to 16 bits.
3. AD1377 conversion time is 8 µs (typical) short cycled to 14
bits, and 9 µs to 16 bits.
4. Two binary codes are available on the digital output. They are
CSB (Complementary Straight Binary) for unipolar input
voltage ranges and COB (Complementary Offset Binary) for
bipolar input ranges. Complementary Twos Complement
(CTC) coding may be obtained by inverting Pin 1 (MSB).
5. The AD1376 and AD1377 include internal reference and
clock, with external clock rate adjust pin, and serial and paral-
lel digital outputs.