ADS7253IPW datasheet(51/71 Pages) TI1

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AVDD

VCM

1.8 nF

COG

(NPO)

VIN+

OPA836

AINP

AINM

GND

AVDD

ADSxx53

INPUT DRIVER

ADS7853 : 14-bit, 1 MSPS

ADS7253 : 12-bit, 1 MSPS

1 k

Where;

VDC = 0 V for CFR.B7 = 0

VDC = FSR_ADC_x/2 for CFR.B7 = 1

VCM = FSR_ADC_x/2

VDC

AVDD

VCM

8.2 nF

COG

(NPO)

VIN+

OPA836

AINP

AINM

GND

AVDD

ADSxx53

INPUT DRIVER

ADS8353 : 16-bit, 600 kSPS

ADS7853 : 14-bit, 1 MSPS

ADS7253 : 12-bit, 1 MSPS

1 k

Where;

VDC = 0 V for CFR.B7 = 0

VDC = FSR_ADC_x/2 for CFR.B7 = 1

VCM = FSR_ADC_x/2

VDC

ADS8353, ADS7853, ADS7253

www.ti.com

SBAS584B – 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 101. 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 102. DAQ Circuit: Maximum SINAD for a 10-kHz Input Signal at Full Throughput, 16-CLK Interface

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Product Folder Links: ADS8353 ADS7853 ADS7253

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