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ADS-118AMC

Description
12-Bit, 5MHz, Low-Power Sampling A/D Converters
File Size121KB,8 Pages
ManufacturerETC
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ADS-118AMC Overview

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

®
®
ADS-118, ADS-118A
12-Bit, 5MHz, Low-Power
Sampling A/D Converters
INNOVATION and EXCELLENCE
FEATURES
12-bit resolution
5MHz minimum sampling rate
Functionally complete
Small 24-pin DDIP
Requires only ±5V supplies
Low-power, 1.3 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
INPUT/OUTPUT CONNECTIONS
GENERAL DESCRIPTION
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 (1.3 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 commercial (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.
PIN
1
2
3
4
5
6
7
8
9
10
11
12
FUNCTION
BIT 12 (LSB)
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1 (MSB)
PIN
24
23
22
21
20
19
18
17
*
16
15
14
13
FUNCTION
NO CONNECTION
ANALOG GROUND
NO CONNECTION
+5V ANALOG SUPPLY
–5V SUPPLY
ANALOG INPUT
ANALOG GROUND
ENABLE/OFFSET ADJ.
START CONVERT
EOC
DIGITAL GROUND
+5V DIGITAL SUPPLY
* ADS-118, Pin 17 is ENABLE
ADS-118A, Pin 17 is OFFSET ADJUST
OFFSET ADJUST 17
(ADS-118A only)
BUFFER
REGISTER
ANALOG INPUT 19
S/H
+
FLASH
ADC
1
17 ENABLE
(ADS-118A only)
12 BIT 1 (MSB)
11 BIT 2
DIGITAL CORRECTION LOGIC
3-STATE OUTPUT REGISTER
10 BIT 3
9
8
7
6
5
4
3
2
1
BIT 4
BIT 5
BIT 6
BIT 7
BIT 9
BIT 9
BIT 10
BIT 11
BIT 12 (LSB)
REF
Σ
DAC
AMP
FLASH
ADC
2
START CONVERT 16
EOC 15
TIMING AND
CONTROL LOGIC
21
+5V ANALOG
SUPPLY
13
+5V DIGITAL
SUPPLY
14
DIGITAL
GROUND
20
–5V SUPPLY
REGISTER
18, 23
ANALOG
GROUND
22, 24
NO CONNECT
Figure 1. ADS-118/118A 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

ADS-118AMC Related Products

ADS-118AMC ADS-118A ADS-118AMM ADS-118 ADS-118MC ADS-118MM
Description 12-Bit, 5MHz, Low-Power Sampling A/D Converters 12-Bit, 5MHz, Low-Power Sampling A/D Converters 12-Bit, 5MHz, Low-Power Sampling A/D Converters 12-Bit, 5MHz, Low-Power Sampling A/D Converters 12-Bit, 5MHz, Low-Power Sampling A/D Converters 12-Bit, 5MHz, Low-Power Sampling A/D Converters
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