ADS-230 Datel, Inc., ADS-230 Datasheet
ADS-230
Manufacturer Part Number
ADS-230
Description
Sampling A/D Converters
Manufacturer
Datel, Inc.
Datasheet
1.ADS-230.pdf
(12 pages)
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FEATURES
GENERAL DESCRIPTION
The ADS-230 and ADS-231 are 12-bit, high speed CMOS
sampling analog-to-digital converters capable of minimum
sampling rates of 1.0 and 1.5MHz, respectively. Both models
feature excellent dynamic performance including a typical
SNR of 72dB for the ADS-230 and 70dB for the ADS-231.
The ADS-230 and ADS-231 are packaged in a small 44-pin
plastic Leaded Chip Carrier (LCC). Each model contains a
fast-settling sample/hold amplifier, a multipass (three-step
flash) A/D converter, timing and control logic, three-state
outputs, a two-channel multiplexer, and digital error correction
circuitry. Digital input and output levels are TTL.
Requiring only a single +5V supply, the ADS-230 typically
dissipates only 60mW and the ADS-231 only 170mW. Both
models offer a low-power "standby" mode resulting in typical
power dissipations of 100µW and 250µW, respectively. The
units offer a maximum unipolar input range of 0 to +5V. The
exact value of the input range is determined by an externally
applied reference voltage. Both models operate over the
extended –40 to +85°C temperature range.
ANALOG INPUT 12
DATEL, Inc., Mansfield, MA 02048 (U.S.A.)
12-bit resolution
1.0 and 1.5MHz throughput rates
Small 44-pin Leaded Chip Carrier
Single +5V supply
Low power, 75 and 200mW maximum
Low power "standby" mode
Outstanding dynamic performance
No missing codes over temperature
Built-in sample-and-hold
Optional two-channel input multiplexer
Ideal for both time and frequency-domain applications
®
MUX OUT
CH1
CH2
IN
IN
11
7
9
14,44
AV
S
SEL
16
MULTIPLEXER
DV
25
26,18,15
DGND C
S
Tel: (508) 339-3000, (800) 233-2765 Fax: (508) 339-6356 Email: sales@datel.com
AND HOLD
®
SAMPLE
Figure 1. ADS-220/-231 Simplified Block Diagram
DGND D
27
AGND
1,13
V
6
TS
12-BIT A/D CONVERTER
TIMING AND CONTROL CIRCUITRY
TEST
V
24
5
T
V
PIN
10
11
12
13
14
15
16
17
18
19
20
21
22
R/16
1
2
3
4
5
6
7
8
9
4
CS
23
Low-Power, 12-Bit, 1.0/1.5MHz
V
3
B
S/H
AGND
V
V
V
V
V
CH1
NC
CH2
NC
MUX OUT
ANALOG INPUT
AGND
AV
DGND C
SEL
PD
DGND C
MD
OE
RD
S/H
22
B
R/16
T
TS
BS
S
V
INPUT/OUTPUT CONNECTIONS
IN
IN
2
BS
FUNCTION
RD
ADS-230/ADS-231
21
Sampling A/D Converter
OE
20
OUTPUT LATCH
THREE-STATE
BUFFER
MD
AND
19
PIN
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
PD
17
AV
BIT 1 (MSB)
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
NC
BIT 10
BIT 11
BIT 12 (LSB)
EOC
INT
NC
DGND D
DGND C
DV
TEST
CS
Internet: www.datel.com
S
S
FUNCTION
PIN
43
42
41
40
39
38
37
36
35
33
32
31
29
30
BIT 1 (MSB)
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
BIT 12 (LSB)
INT
EOC
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