Datasheet > ADS-EVAL4

ADS-EVAL4

更新时间： 2022-10-09 10:33:01

品牌	Logo	应用领域
CANDD		转换器
页数	文件大小	规格书
6页	81K
描述
14-Bit, 1MHz Sampling A/D Converters

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ADS-EVAL4 数据手册

ADS -9 4 1

14-Bit, 1MHz

Sampling A/D Converters

FEATURES

• 14-bit resolution

• 1MHz minimum sampling rate

• Functionally complete

• Internal reference and sample/hold

• No missing codes

• Excellent performance

• Full Nyquist-rate sampling

• Small 32–pin DIP

• Low power, 2.8 Watts

INPUT/OUTPUT CONNECTIONS

GENERAL DESCRIPTION

FUNCTION

DATEL's ADS-941 is a functionally complete, 14-bit, 1MHz,

sampling A/D converter. Its standard, 32-pin, triple-wide

ceramic DIP contains a fast-settling sample/hold amplifier, a

14-bit subranging (two-pass) A/D converter, a precision

reference, a three-state output register, and all the timing and

control logic necessary to operate from a single start convert

pulse.

+10V REF. OUT

BIPOLAR

START CONVERT

BIT 1 OUT (MSB)

BIT 2 OUT

ANALOG INPUT

SIGNAL GROUND

OFFSET ADJUST

ANALOG GROUND

OVERFLOW

BIT 3 OUT

BIT 4 OUT

The ADS-941 is optimized for wideband frequency-domain

applications and is fully FFT tested. Total harmonic distortion

(THD) and signal-to-noise ratio (including distortion) typically

run at –85dB and 80dB, respectively, with full-scale inputs up

to 100kHz.

BIT 5 OUT

CODING SELECT

ENABLE

BIT 6 OUT

BIT 7 OUT

+5V SUPPLY

BIT 8 OUT

DIGITAL GROUND

+15V SUPPLY

–15V SUPPLY

ANALOG GROUND

EOC

BIT 9 OUT

The ADS-941 requires ±15V and +5V supplies and typically

consumes 2.8 Watts.

BIT 10 OUT

BIT 11 OUT

BIT 12 OUT

BIT 13 OUT

BIT 14 OUT (LSB)

DAC

31 BIT 1 OUT (MSB)

30 BIT 1 OUT (MSB)

29 BIT 2 OUT

REF

+10V REF. OUT

28 BIT 3 OUT

OFFSET

CIRCUIT

27 BIT 4 OUT

OFFSET ADJUST

BIPOLAR

26 BIT 5 OUT

FLASH

ADC

25 BIT 6 OUT

24 BIT 7 OUT

BUFFER

23 BIT 8 OUT

22 BIT 9 OUT

S/H

ANALOG INPUT

21 BIT 10 OUT

20 BIT 11 OUT

19 BIT 12 OUT

18 BIT 13 OUT

17 BIT 14 OUT (LSB)

START CONVERT 32

EOC 16

TIMING AND

CONTROL LOGIC

9 ENABLE

7 OVERFLOW

6, 14, 15

SIGNAL

GROUND

+5V

SUPPLY

DIGITAL

GROUND

+15V

SUPPLY

ANALOG

GROUND

–5V

SUPPLY

CODING

SELECT

Figure 1. ADS-941 Functional Block Diagram

DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1151 (U.S.A.)

•

Tel: (508) 339-3000 Fax: (508) 339-6356 • For immediate assistance: (800) 233-2765

12 3 4 5 6

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