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ADS7253 数据表(PDF) 49 Page - Texas Instruments

部件名 ADS7253
功能描述  ADSxx54 Dual, High-Speed, 16-, 14-, and 12-Bit, Simultaneous-Sampling, Analog-to-Digital Converters
PDF  73 Pages
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制造商  TI2 [Texas Instruments]
网页  https://www.ti.com
标志 TI2 - Texas Instruments

ADS7253 数据表(HTML) 49 Page - Texas Instruments

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REF5025,
REF5040,
REF5050
(1)
AVDD
-
+
OPA2350
0.1

10 µF
1 k

1 µF
ADC_A
REFIN-A
VOUT
0.22

TRIM
10 µF
1 µF
-
+
1 k

1 µF
ADC_B
REFIN-B
0.1

10 µF
REFGND-A
REFGND-B
Device
AVDD
AVDD
AVDD
AVDD
AVDD
VCM
10

2.2 nF
VIN+
VIN-
+
+
THS4521
V
+
AINP
AINM
GND
AVDD
ADSxx54
10

INPUT DRIVER
ADS7854 : 14-bit, 1 MSPS
ADS7254 : 12-bit, 1 MSPS
-
-
1 K

1 K

1 K

1 K

+
VREF
COG
(NPO)
AVDD
AVDD
VCM
10

4.7 nF
VIN+
VIN-
+
+
THS4521
V
+
AINP
AINM
GND
AVDD
ADSxx54
10

INPUT DRIVER
ADS8354 : 16-bit, 700 kSPS
ADS7854 : 14-bit, 1 MSPS
ADS7254 : 11-bit, 1 MSPS
-
-
1 K

1 K

1 K

1 K

+
VREF
COG
(NPO)
ADS8354, ADS7854, ADS7254
www.ti.com
SBAS556B – OCTOBER 2013 – REVISED AUGUST 2014
9.2 Typical Applications
9.2.1 DAQ Circuit to Achieve Maximum SINAD for a 10-kHz Input Signal at Full Throughput
NOTE: Only one ADC channel is shown in this diagram. Replicate the same circuit for other ADC channels.
Figure 100. DAQ Circuit: Maximum SINAD for a 10-kHz Input Signal at Full Throughput, 32-CLK Interface
NOTE: Only one ADC channel is shown in this diagram. Replicate the same circuit for other ADC channels.
Figure 101. DAQ Circuit: Maximum SINAD for a 10-kHz Input Signal at Full Throughput, 16-CLK Interface
(1) When using the REF5050, AVDD must be set to 5.5 V.
Figure 102. Reference Drive Circuit
Copyright © 2013–2014, Texas Instruments Incorporated
Submit Documentation Feedback
49
Product Folder Links: ADS8354 ADS7854 ADS7254



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