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Reference Design
ADS8353, ADS7853, ADS7253
SBAS584B – OCTOBER 2013 – REVISED AUGUST 2014
ADSxx53 Dual, High-Speed, 16-, 14-, and 12-Bit, Simultaneous-Sampling, Analog-to-Digital Converters
1 Features
•1 16-, 14-, and 12-Bit, Pin-Compatible Family • Simultaneous Sampling of Two Channels • Supports Single-Ended and Pseudo-Differential
Inputs • High Speed:
– ADS8353: 16 Bits, 600 kSPS – ADS7853: 14 Bits, 1 MSPS – ADS7253: 12 Bits, 1 MSPS • Excellent DC Performance: – ADS8353:
– 16-Bit NMC DNL, ±2.5-LSB Max INL – ADS7853:
– 14-Bit NMC DNL, ±2-LSB Max INL – ADS7253:
– 12-Bit NMC DNL, ±1-LSB Max INL • Excellent AC Performance:
– ADS8353: – 89-dB SNR, –100-dB THD
– ADS7853: – 82-dB SNR, –90-dB THD
– ADS7253: – 72-dB SNR, –90-dB THD
• Dual, Programmable, and Buffered 2.5-V Internal Reference
• Fully-Specified Over the Extended Industrial Temperature Range: –40°C to 125°C
• Small Footprint: WQFN-16 (3-mm × 3-mm) and TSSOP-16
2 Applications
• Motor Control: Position Measurement Using Encoders
• Optical Networking: EDFA Gain Control Loops • Protection Relays • Power Quality Measurement • Three-Phase Power Controls • Programmable Logic Controllers
3 Description
The ADS8353, ADS7853, and ADS7253 belong to a family of pin-compatible, dual, high-speed, simultaneous-sampling, analog-to-digital converters (ADCs) that support single-ended and pseudodifferential analog inputs.
Each device includes two individually programmable reference sources that can be used for system-level gain calibration. Also, a flexible serial interface that can operate over a wide power-supply range enables easy communication with a large variety of host controllers. Power consumption for a given throughput can be optimized by using the two lowpower modes supported by the device. All devices are fully specified over the extended industrial temperature range (–40°C to 125°C) and are available in pin-compatible, WQFN-16 (3-mm × 3-mm) and TSSOP-16 packages.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADSxx53
TSSOP (16) WQFN (16)
5.00 mm × 4.40 mm 3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at the end of the datasheet.
Typical Application Diagram
AVDD VCM
OPA836 + + 4
1 k
-
+
VIN+ 1.8 nF 1k
4
AVDD
AINP
AVDD
ADSxx53
AINM
GND
VDC INPUT DRIVER
ADS8353 : 16-bit, 600 kSPS ADS7853 : 14-bit, 1 MSPS ADS7253 : 12-bit, 1 MSPS
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.
ADS8353, ADS7853, ADS7253
SBAS584B – OCTOBER 2013 – REVISED AUGUST 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ...........................