Datasheet > ADC-B119

ADC-B119

更新时间： 2024-11-04 22:47:35

品牌	Logo	应用领域
其他 - ETC		转换器
页数	文件大小	规格书
8页	136K
描述
12-Bit, 10MHz, Low-Power Sampling A/D Converters

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ADC-B119 数据手册

ADS -1 1 9

12-Bit, 10MHz, Low-Power

Sampling A/D Converters

FEATURES

• 12-bit resolution

• 10MHz minimum sampling rate

• Functionally complete

• Small 24-pin DDIP or SMT package

• Requires only ±5V supplies

• Low-power, 1.8 Watts

• Outstanding dynamic performance

• Edge-triggered

• No missing codes over temperature

• Ideal for both time and frequency-domain applications

INPUT/OUTPUT CONNECTIONS

GENERAL DESCRIPTION

FUNCTION

The ADS-119 is a high-performance, 12-bit, 10MHz sampling

A/D converter. The device samples input signals up to Nyquist

frequencies with no missing codes. The ADS-119 features

excellent dynamic performance including a typical SNR of

69dB.

BIT 12 (LSB)

BIT 11

BIT 10

BIT 9

NO CONNECT

ANALOG GROUND

NO CONNECT

+5V ANALOG SUPPLY

–5V SUPPLY

BIT 8

Packaged in a metal-sealed, ceramic, 24-pin DDIP, the

functionally complete ADS-119 contains a fast-settling sample/

hold amplifier, a subranging (two-pass) A/D converter, a

precise voltage reference, timing/control logic, and error-

correction circuitry. All timing and control logic operates from

the rising edge of a single start convert pulse. Digital input and

output levels are TTL.

BIT 7

ANALOG INPUT

ANALOG GROUND

OFFSET ADJUST

START CONVERT

DATA VALID

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

DIGITAL GROUND

+5V DIGITAL SUPPLY

BIT 1

Requiring only ±5V supplies, the ADS-119 typically dissipates

1.8 Watts. The unit offers a bipolar input range of ±1.5V.

Models are available for use in either commercial (0 to +70°C)

or military (–55 to +125°C) operating temperature ranges.

Typical applications include signal analysis, medical/graphic

imaging, process control, ATE, radar, and sonar.

OFFSET ADJUST 17

BUFFER

ANALOG INPUT 19

–

12 BIT 1 (MSB)

11 BIT 2

S/H

FLASH

ADC

10 BIT 3

BIT 4

BIT 5

REF

BIT 6

DAC

BIT 7

BIT 9

BIT 10

BIT 11

BIT 12 (LSB)

FLASH

ADC

AMP

START CONVERT 16

DATA VALID 15

TIMING AND

CONTROL LOGIC

18, 23

22, 24

+5V ANALOG

SUPPLY

+5V DIGITAL

SUPPLY

DIGITAL

GROUND

–5V SUPPLY

ANALOG

GROUND

NO CONNECT

Figure 1. ADS-119 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 7 8

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