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参数资料
| 型号： | 5962-9169101M3A |
| 厂商： | CRYSTAL SEMICONDUCTOR CORP |
| 元件分类： | ADC |
| 英文描述： | 2-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CQCC28 |
| 封装： | LCC-28 |
| 文件页数： | 32/48页 |
| 文件大小： | 647K |
| 代理商： | 5962-9169101M3A |
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Power Supplies
Figure 1 shows the power supply arrangements.
The analog section of the board is powered by
± 12/15 volts, which is regulated down to ± 5V
for the ADC. A separate +5V digital supply is
required to power the discrete logic.
Analog Input
The CS5101A/02A converters have a two-chan-
nel multiplexer input. Separate amplifiers (see
Figure 2) are provided on the evaluation board
to drive each input independently. If the con-
verter is used in FRN mode, the multiplexer
"ping-pongs" between channels. If only one sig-
nal is to be digitized in FRN mode at full speed,
the AIN1 and AIN2 pins on the converter should
be shorted together. Then the amplifier circuitry
for the unused channel should be disconnected.
For example, if only Analog Input one is used
(in FRN mode) as the input, short the AIN1 and
AIN2 pins of the converter and remove R15 and
C15.
If you do not want to use the on-board amplifi-
ers, connect your signal to TP27 for channel 1
and TP32 for channel 2. Use TP28 and TP31 to
break the connection to the output of the on-
board buffers. Your own buffer amplifiers may
be installed in the 2 analog patch areas. For criti-
cal 2 channel applications, keep the signal path
for the 2 channels identical.
Voltage Reference
Figure 3 shows the LTI019-4.5 voltage refer-
ence, which is buffered and filtered to reduce
output impedance and noise.
+15V
-15V
C20
C19
C21
C18
0.22
F
0.47
F
+5VA
- 5VA
J1
+ C23
10
F
C22
+
10
F
0.22
F
D2
D1
0.47
F
C25
+ C24
10
F 0.1 F
D3
+12/15V
-12/15V
AGND
DGND
+5V
Logic
TP GND
+5VL
TP - VA+
TP - VA -
TP +5V
78L05
OUT
COM
U7
IN
79L05
OUT
COM
IN
U8
Figure 1. Power Supplies
CDB5101A/5102A
38
DS45DB3
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