ADS-930
器件资料摘要：
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048 (U.S.A.) • Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • Email: datellit@mcimail.com
FEATURES
• 16-bit resolution
• 500kHz sampling rate
• Functionally complete
• Excellent dynamic performance
• 83dB SNR, –89dB THD
• No missing codes
• Small, 40-pin, TDIP package
• 3.5 Watts power dissipation
• On-board FIFO
16-Bit, 500kHz
Sampling A/D Converters
ADS-930® ®
INNOV A TION and EX CELLENCE
GENERAL DESCRIPTION
The low-cost ADS-930 is a high-performance, 16-bit, 500kHz
sampling A/D converter. This device accurately samples full-
scale input signals up to Nyquist frequencies with no missing
codes. The dynamic performance of the ADS-930 is optimized
to achieve a THD of –89dB and an SNR of 83dB.
Packaged in a small, 40-pin, ceramic TDIP, the functionally
complete ADS-930 contains a fast-settling sample-hold
amplifier, a subranging (three-pass) A/D converter, an internal
reference, an on-board FIFO, timing and control logic, three-
state outputs and error-correction circuitry. Digital inputs/
outputs are TTL.
Requiring ±15V and +5V supplies, the ADS-930 typically
dissipates 3.5 Watts. The unit is offered with a bipolar input
range of ±5V or a unipolar input range of 0 to –10V. Models
are available for use in either commercial (0 to +70°C) or
military (–55 to +125°C) operating temperature ranges.
Typical applications include radar, sonar, medical/graphic
imaging, and FFT spectrum analysis.
Figure 1. ADS-930 Functional Block Diagram
PIN FUNCTION PIN FUNCTION
1 +10V REF. OUT 40 BIT 1 (MSB)
2 BIPOLAR 39 BIT 1 (MSB)
3 ANALOG INPUT 38 BIT 2
4 ANALOG GROUND 37 BIT 3
5 OFFSET ADJUST 36 BIT 4
6 GAIN ADJUST 35 BIT 5
7 +15V SUPPLY 34 BIT 6
8 COMP. BITS 33 BIT 7
9 ENABLE 32 BIT 8
10 FIFO READ 31 BIT 9
11 ANALOG GROUND 30 ANALOG GROUND
12 –15V SUPPLY 29 BIT 10
13 ANALOG GROUND 28 BIT 11
14 OVERFLOW 27 BIT 12
15 EOC 26 BIT 13
16 +5V SUPPLY 25 BIT 14
17 START CONVERT 24 DIGITAL GROUND
18 DIGITAL GROUND 23 FIFO/DIR
19 FSTAT1 22 BIT 15
20 FSTAT2 21 BIT 16 (LSB)
INPUT/OUTPUT CONNECTIONS
3-
ST
AT
E
OU
TP
UT
R
EG
IS
TE
R
40 BIT 1 (MSB)
39 BIT 1 (MSB)
38 BIT 2
37 BIT 3
36 BIT 4
35 BIT 5
34 BIT 6
33 BIT 7
32 BIT 8
31 BIT 9
29 BIT 10
28 BIT 11
27 BIT 12
26 BIT 13
25 BIT 14
22 BIT 15
21 BIT 16 (LSB)
TIMING AND
CONTROL LOGIC
GAIN ADJUST 6
+10V REF. OUT 1
OFFSET ADJUST 5
EOC 15
+5V SUPPLY
+15V SUPPLY
–15V SUPPLY
ANALOG GROUND
DIGITAL GROUND
CU
ST
OM
G
AT
E
AR
RA
Y
POWER AND GROUNDING
3-
PA
SS
A
NA
LO
G-
TO
-D
IG
IT
AL
C
ON
VE
RT
ER
S/H
GAIN
ADJUST
CKT.
OFFSET
ADJUST
CKT.
PRECISION
+10V REFERENCE
ANALOG INPUT 3
START CONVERT 17
COMP. BITS 8
19 FSTAT1
20 FSTAT2
23 FIFO/DIR
10 FIFO READ
9 ENABLE
14 OVERFLOW
16
7
12
4, 11, 13, 30
18, 24
BIPOLAR 2
FEATURES
• 16-bit resolution
• 500kHz sampling rate
• Functionally complete
• Excellent dynamic performance
• 83dB SNR, –89dB THD
• No missing codes
• Small, 40-pin, TDIP package
• 3.5 Watts power dissipation
• On-board FIFO
16-Bit, 500kHz
Sampling A/D Converters
ADS-930® ®
INNOV A TION and EX CELLENCE
GENERAL DESCRIPTION
The low-cost ADS-930 is a high-performance, 16-bit, 500kHz
sampling A/D converter. This device accurately samples full-
scale input signals up to Nyquist frequencies with no missing
codes. The dynamic performance of the ADS-930 is optimized
to achieve a THD of –89dB and an SNR of 83dB.
Packaged in a small, 40-pin, ceramic TDIP, the functionally
complete ADS-930 contains a fast-settling sample-hold
amplifier, a subranging (three-pass) A/D converter, an internal
reference, an on-board FIFO, timing and control logic, three-
state outputs and error-correction circuitry. Digital inputs/
outputs are TTL.
Requiring ±15V and +5V supplies, the ADS-930 typically
dissipates 3.5 Watts. The unit is offered with a bipolar input
range of ±5V or a unipolar input range of 0 to –10V. Models
are available for use in either commercial (0 to +70°C) or
military (–55 to +125°C) operating temperature ranges.
Typical applications include radar, sonar, medical/graphic
imaging, and FFT spectrum analysis.
Figure 1. ADS-930 Functional Block Diagram
PIN FUNCTION PIN FUNCTION
1 +10V REF. OUT 40 BIT 1 (MSB)
2 BIPOLAR 39 BIT 1 (MSB)
3 ANALOG INPUT 38 BIT 2
4 ANALOG GROUND 37 BIT 3
5 OFFSET ADJUST 36 BIT 4
6 GAIN ADJUST 35 BIT 5
7 +15V SUPPLY 34 BIT 6
8 COMP. BITS 33 BIT 7
9 ENABLE 32 BIT 8
10 FIFO READ 31 BIT 9
11 ANALOG GROUND 30 ANALOG GROUND
12 –15V SUPPLY 29 BIT 10
13 ANALOG GROUND 28 BIT 11
14 OVERFLOW 27 BIT 12
15 EOC 26 BIT 13
16 +5V SUPPLY 25 BIT 14
17 START CONVERT 24 DIGITAL GROUND
18 DIGITAL GROUND 23 FIFO/DIR
19 FSTAT1 22 BIT 15
20 FSTAT2 21 BIT 16 (LSB)
INPUT/OUTPUT CONNECTIONS
3-
ST
AT
E
OU
TP
UT
R
EG
IS
TE
R
40 BIT 1 (MSB)
39 BIT 1 (MSB)
38 BIT 2
37 BIT 3
36 BIT 4
35 BIT 5
34 BIT 6
33 BIT 7
32 BIT 8
31 BIT 9
29 BIT 10
28 BIT 11
27 BIT 12
26 BIT 13
25 BIT 14
22 BIT 15
21 BIT 16 (LSB)
TIMING AND
CONTROL LOGIC
GAIN ADJUST 6
+10V REF. OUT 1
OFFSET ADJUST 5
EOC 15
+5V SUPPLY
+15V SUPPLY
–15V SUPPLY
ANALOG GROUND
DIGITAL GROUND
CU
ST
OM
G
AT
E
AR
RA
Y
POWER AND GROUNDING
3-
PA
SS
A
NA
LO
G-
TO
-D
IG
IT
AL
C
ON
VE
RT
ER
S/H
GAIN
ADJUST
CKT.
OFFSET
ADJUST
CKT.
PRECISION
+10V REFERENCE
ANALOG INPUT 3
START CONVERT 17
COMP. BITS 8
19 FSTAT1
20 FSTAT2
23 FIFO/DIR
10 FIFO READ
9 ENABLE
14 OVERFLOW
16
7
12
4, 11, 13, 30
18, 24
BIPOLAR 2