参数资料
型号: ADS-119MC
厂商: CD TECHNOLOGIES INC
元件分类: ADC
英文描述: 1-CH 12-BIT FLASH METHOD ADC, PARALLEL ACCESS, CDIP24
封装: METAL SEALED, CERAMIC, DDIP-24
文件页数: 1/8页
文件大小: 147K
代理商: ADS-119MC
ADS-119
12-Bit, 10MHz, Low-Power
Sampling A/D Converters
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
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
GENERAL DESCRIPTION
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.
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.
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.
INPUT/OUTPUT CONNECTIONS
PIN
FUNCTION
PIN
FUNCTION
1
BIT 12 (LSB)
24
NO CONNECT
2
BIT 11
23
ANALOG GROUND
3
BIT 10
22
NO CONNECT
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
OFFSET ADJUST
9
BIT 4
16
START CONVERT
10
BIT 3
15
DATA VALID
11
BIT 2
14
DIGITAL GROUND
12
BIT 1
13
+5V DIGITAL SUPPLY
Typical applications include signal analysis, medical/graphic
imaging, process control, ATE, radar, and sonar.
REF
DAC
R
E
G
IS
T
E
R
E
G
IS
T
E
R
O
U
T
P
U
T
R
E
G
IS
T
E
R
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)
TIMING AND
CONTROL LOGIC
OFFSET ADJUST 17
ANALOG INPUT 19
START CONVERT 16
DATA VALID 15
+
S/H
BUFFER
D
IG
IT
A
L
C
O
R
E
C
T
IO
N
L
O
G
IC
FLASH
ADC
1
FLASH
ADC
2
Σ
AMP
21
+5V ANALOG
SUPPLY
20
–5V SUPPLY
18, 23
ANALOG
GROUND
13
+5V DIGITAL
SUPPLY
14
DIGITAL
GROUND
22, 24
NO CONNECT
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