ADS-941MC
器件描述：14-Bit, 1MHz Sampling A/D Converters
器件厂商：CANDD [C&D Technologies]
文件大小：83.63KB，共6页
Sponsor by e络盟器件资料摘要：
® ® ADS-941
14-Bit, 1MHz
Sampling A/D Converters
FEATURES
• 14-bit resolution
• 1MHz minimum sampling rate
• Functionally complete
• Internal reference and sample/hold
• No missing codes
• Excellent performance
• Full Nyquist-rate sampling
• Small 32–pin DIP
• Low power, 2.8 Watts
GENERAL DESCRIPTION
DATEL's ADS-941 is a functionally complete, 14-bit, 1MHz,
sampling A/D converter. Its standard, 32-pin, triple-wide
ceramic DIP contains a fast-settling sample/hold amplifier, a
14-bit subranging (two-pass) A/D converter, a precision
reference, a three-state output register, and all the timing and
control logic necessary to operate from a single start convert
pulse.
The ADS-941 is optimized for wideband frequency-domain
applications and is fully FFT tested. Total harmonic distortion
(THD) and signal-to-noise ratio (including distortion) typically
run at –85dB and 80dB, respectively, with full-scale inputs up
to 100kHz.
The ADS-941 requires ±15V and +5V supplies and typically
consumes 2.8 Watts.
INPUT/OUTPUT CONNECTIONS
1 +10V REF. OUT 32 START CONVERT
2 BIPOLAR 31 BIT 1 OUT (MSB)
3 ANALOG INPUT 30 BIT 1 OUT (MSB)
4 SIGNAL GROUND 29 BIT 2 OUT
5 OFFSET ADJUST 28 BIT 3 OUT
6 ANALOG GROUND 27 BIT 4 OUT
7 OVERFLOW 26 BIT 5 OUT
8 CODING SELECT 25 BIT 6 OUT
9 ENABLE 24 BIT 7 OUT
10 +5V SUPPLY 23 BIT 8 OUT
11 DIGITAL GROUND 22 BIT 9 OUT
12 +15V SUPPLY 21 BIT 10 OUT
13 –15V SUPPLY 20 BIT 11 OUT
14 ANALOG GROUND 19 BIT 12 OUT
15 ANALOG GROUND 18 BIT 13 OUT
16 EOC 17 BIT 14 OUT (LSB)
PIN FUNCTION PIN FUNCTION
Figure 1. ADS-941 Functional Block Diagram
REF
RE
GI
ST
ER
RE
GI
ST
ER
31 BIT 1 OUT (MSB)
30 BIT 1 OUT (MSB)
29 BIT 2 OUT
28 BIT 3 OUT
27 BIT 4 OUT
26 BIT 5 OUT
25 BIT 6 OUT
24 BIT 7 OUT
23 BIT 8 OUT
22 BIT 9 OUT
21 BIT 10 OUT
20 BIT 11 OUT
19 BIT 12 OUT
18 BIT 13 OUT
17 BIT 14 OUT (LSB)
TIMING AND
CONTROL LOGIC
+10V REF. OUT 1
START CONVERT 32
EOC 16
DI
GI
TA
L C
OR
RE
CT
IO
N
LO
GI
C
DAC
FLASH
ADC
BUFFER
ANALOG INPUT 3
S2
S1
4
SIGNAL
GROUND
11
DIGITAL
GROUND
12
+15V
SUPPLY
3-S
TA
TE
O
UT
PU
T R
EG
IS
TE
R
S/H
OFFSET
CIRCUIT
BIPOLAR 2
OFFSET ADJUST 5
10
+5V
SUPPLY
6, 14, 15
ANALOG
GROUND
8
CODING
SELECT
13
–5V
SUPPLY
9 ENABLE
7 OVERFLOW
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
14-Bit, 1MHz
Sampling A/D Converters
FEATURES
• 14-bit resolution
• 1MHz minimum sampling rate
• Functionally complete
• Internal reference and sample/hold
• No missing codes
• Excellent performance
• Full Nyquist-rate sampling
• Small 32–pin DIP
• Low power, 2.8 Watts
GENERAL DESCRIPTION
DATEL's ADS-941 is a functionally complete, 14-bit, 1MHz,
sampling A/D converter. Its standard, 32-pin, triple-wide
ceramic DIP contains a fast-settling sample/hold amplifier, a
14-bit subranging (two-pass) A/D converter, a precision
reference, a three-state output register, and all the timing and
control logic necessary to operate from a single start convert
pulse.
The ADS-941 is optimized for wideband frequency-domain
applications and is fully FFT tested. Total harmonic distortion
(THD) and signal-to-noise ratio (including distortion) typically
run at –85dB and 80dB, respectively, with full-scale inputs up
to 100kHz.
The ADS-941 requires ±15V and +5V supplies and typically
consumes 2.8 Watts.
INPUT/OUTPUT CONNECTIONS
1 +10V REF. OUT 32 START CONVERT
2 BIPOLAR 31 BIT 1 OUT (MSB)
3 ANALOG INPUT 30 BIT 1 OUT (MSB)
4 SIGNAL GROUND 29 BIT 2 OUT
5 OFFSET ADJUST 28 BIT 3 OUT
6 ANALOG GROUND 27 BIT 4 OUT
7 OVERFLOW 26 BIT 5 OUT
8 CODING SELECT 25 BIT 6 OUT
9 ENABLE 24 BIT 7 OUT
10 +5V SUPPLY 23 BIT 8 OUT
11 DIGITAL GROUND 22 BIT 9 OUT
12 +15V SUPPLY 21 BIT 10 OUT
13 –15V SUPPLY 20 BIT 11 OUT
14 ANALOG GROUND 19 BIT 12 OUT
15 ANALOG GROUND 18 BIT 13 OUT
16 EOC 17 BIT 14 OUT (LSB)
PIN FUNCTION PIN FUNCTION
Figure 1. ADS-941 Functional Block Diagram
REF
RE
GI
ST
ER
RE
GI
ST
ER
31 BIT 1 OUT (MSB)
30 BIT 1 OUT (MSB)
29 BIT 2 OUT
28 BIT 3 OUT
27 BIT 4 OUT
26 BIT 5 OUT
25 BIT 6 OUT
24 BIT 7 OUT
23 BIT 8 OUT
22 BIT 9 OUT
21 BIT 10 OUT
20 BIT 11 OUT
19 BIT 12 OUT
18 BIT 13 OUT
17 BIT 14 OUT (LSB)
TIMING AND
CONTROL LOGIC
+10V REF. OUT 1
START CONVERT 32
EOC 16
DI
GI
TA
L C
OR
RE
CT
IO
N
LO
GI
C
DAC
FLASH
ADC
BUFFER
ANALOG INPUT 3
S2
S1
4
SIGNAL
GROUND
11
DIGITAL
GROUND
12
+15V
SUPPLY
3-S
TA
TE
O
UT
PU
T R
EG
IS
TE
R
S/H
OFFSET
CIRCUIT
BIPOLAR 2
OFFSET ADJUST 5
10
+5V
SUPPLY
6, 14, 15
ANALOG
GROUND
8
CODING
SELECT
13
–5V
SUPPLY
9 ENABLE
7 OVERFLOW
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