ADS-118MC View Datasheet(PDF) - DATEL Data Acquisition products

Part Name

Description

Manufacturer

ADS-118MC

12-Bit, 5MHz, Low-Power Sampling A/D Converters

DATEL Data Acquisition products  

ADS-118, ADS-118A

12-Bit, 5MHz, Low-Power Sampling A/D Converters

FEATURES

12-bit resolution

5MHz minimum sampling rate

Functionally complete

Small 24-pin DDIP

Requires only ±5V supplies

Low-power, 1.8 Watts

Outstanding dynamic performance

No missing codes over full military temperature

range

Edge-triggered, no pipeline delay

Ideal for both time and frequency-domain

applications

BLOCK DIAGRAM

PRODUCT OVERVIEW

DATEL's ADS-118 and ADS-118A are 12-bit,

5MHz, sampling A/D converters packaged in

space-saving 24-pin DDIP’s. The ADS-118 offers

an input range of ±1V and has three-state outputs.

The ADS-118A has an input range of ±1.25V and

features direct adjustment of offset error.

These functionally complete low-power devices

(1.8 Watts) contain an internal fast-settling sample/

hold amplifier, a 12-bit subranging 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. Models are available for use in either com-

mercial (0 to +70°C) or military (–55 to +125°C)

operating temperature ranges.

Applications include radar, transient signal

analysis, process control, medical/graphic imaging,

and FFT spectrum analysis.

INPUT/OUTPUT CONNECTIONS

PIN FUNCTION

PIN FUNCTION

1 BIT 12 (LSB)

24 NO CONNECTION

2 BIT 11

23 ANALOG GROUND

3 BIT 10

22 NO CONNECTION

4 BIT 9

21 +5V ANALOG SUPPLY

5 BIT 8

20 –5V SUPPLY

6 BIT 7

19 ANALOG INPUT

7 BIT 6

18 ANALOG GROUND

8 BIT 5

17* ENABLE/OFFSET ADJ.

9 BIT 4

16 START CONVERT

10 BIT 3

15 EOC

11 BIT 2

14 DIGITAL GROUND

12 BIT 1 (MSB)

13 +5V DIGITAL SUPPLY

* ADS-118, Pin 17 is ENABLE

ADS-118A, Pin 17 is OFFSET ADJUST

OFFSET ADJUST 17

(ADS-118A only)

ANALOG INPUT 19

–

S/H

+

BUFFER

FLASH

ADC

1

REF

DAC

S

AMP

FLASH

ADC

2

17 ENABLE

(ADS-118A only)

12 BIT 1 (MSB)

11 BIT 2

10 BIT 3

9 BIT 4

8 BIT 5

7 BIT 6

6 BIT 7

5 BIT 9

4 BIT 9

3 BIT 10

2 BIT 11

1 BIT 12 (LSB)

START CONVERT 16

EOC 15

TIMING AND

CONTROL LOGIC

21

+5V ANALOG

SUPPLY

13

+5V DIGITAL

SUPPLY

14

DIGITAL

GROUND

20

–5V SUPPLY

18, 23

ANALOG

GROUND

Figure 1. ADS-118/118A Functional Block Diagram

22, 24

NO CONNECT

DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com

26 Jun 2015 ADS-118.B05 Page 1 of 9

Share Link: