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ADS119 データシート PDF ( 特性, スペック, ピン接続図 )

部品番号 ADS119
部品説明 12-Bit/ 10MHz/ Low-Power Sampling A/D Converters
メーカ ETC
ロゴ ETC ロゴ 

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ADS119 Datasheet, ADS119 PDF,ピン配置, 機能
®®
ADS-119
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
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)
2 BIT 11
3 BIT 10
4 BIT 9
5 BIT 8
6 BIT 7
7 BIT 6
8 BIT 5
9 BIT 4
10 BIT 3
11 BIT 2
12 BIT 1
24 NO CONNECT
23 ANALOG GROUND
22 NO CONNECT
21 +5V ANALOG SUPPLY
20 –5V SUPPLY
19 ANALOG INPUT
18 ANALOG GROUND
17 OFFSET ADJUST
16 START CONVERT
15 DATA VALID
14 DIGITAL GROUND
13 +5V DIGITAL SUPPLY
Typical applications include signal analysis, medical/graphic
imaging, process control, ATE, radar, and sonar.
OFFSET ADJUST 17
ANALOG INPUT 19
S/H
+
BUFFER
FLASH
ADC
1
REF
Σ
DAC
AMP
FLASH
ADC
2
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
DATA VALID 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-119 Functional Block Diagram
22, 24
NO CONNECT
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

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