ANALOG DEVICES AD1376 AD1377 Data Sheet User Guide

Complete, High Speed 16-Bit A/D Converters

AD1376/AD1377

FEATURES Digital output data is provided in parallel form with corresponding clock and status outputs. All digital inputs and

Complete 16-bit converters with reference and clock

outputs are TTL-compatible.

±0.003% maximum nonlinearity No missing codes to 14 bits over temperature

For the AD1376, the serial output function is no longer

Fast conversion

available after date code 0111. For the AD1377, the serial output

17 µs to 16 bits (AD1376)

function is no longer available after date code 0210. The option

10 µs to 16 bits (AD1377)

of applying an external clock on the CONVERT START pin to

Short cycle capability

slow down the internally set conversion time is no longer

Adjustable clock rate

supported for either part.

Parallel outputs Low power PRODUCT HIGHLIGHTS 645 m W typical (AD1376)

585 m W typical (AD1377) 1. The AD1376/AD1377 provide 16-bit resolution with a Industry-standard pinout maximum linearity error of ±0.003% (1/2 LSB14) at 25°C. GENERAL DESCRIPTION 2. The AD1376 conversion time is 14 µs (typical) short cycled to 14 bits, and 16 µs to 16 bits.

The AD1376/AD1377 are high resolution, 16-bit analog-to-

digital converters with internal reference, clock, and laser- 3. The AD1377 conversion time is 8 µs (typical) short cycled trimmed thin-film applications resistors. The AD1376/AD1377 to 14 bits, and 9 µs to 16 bits.

-B IT

are excellent for use in high resolution applications requiring

4. Two binary codes are available on the digital output. They

moderate speed and high accuracy or stability over commercial

are CSB (complementary straight binary) for unipolar input

temperature ranges (0°C to 70°C). They are packaged in

voltage ranges and COB (complementary offset binary) for

compact 32-lead, ceramic seam-sealed (hermetic), dual in-line

bipolar input ranges. Complementary twos complement

packages (DIP). Thin-film scaling resistors provide bipolar

(CTC) coding may be obtained by inverting Pin 1 (MSB).

input ranges of ±2.5 V, ±5 V, and ±10 V and unipolar input

5. The AD1376/AD1377 include internal reference and clock

ranges of 0 V to +5 V, 0 V to +10 V, and 0 V to +20 V.

with external clock rate adjust pin, and parallel digital outputs.

FUNCTIONAL BLOCK DIAGRAM

(MSB) BIT 1 SHORT CYCLE32

9- BIT 2 CONVERT START31

AD1376/AD1377

BIT 3 REFERENCE +5V DC SUPPLY VL30

BIT 4 GAIN ADJUST29

BIT 5 +15V DC SUPPLY VCC28

BIT 6 COMPARATOR IN27

BIT 7 BIPOLAR OFFSET26

BIT 8 +10V25

BIT 9 +20V24

BIT 10 CLK RATE CTRL23

BIT 11 ANALOG COMMON22

BIT 12 16-BIT SAR –15V DC SUPPLY VEE21

(LSB FOR 13 BITS) BIT 13 CLOCK OUT20

(LSB FOR 14 BITS) BIT 14 DIGITAL COMMON19

COMPARATOR CLOCK

BIT 15 STATUS18

BIT 16 NC17

Figure 1.

Rev. D Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use.

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