Analog-to-Digital Converter. ADS8354 Datasheet

ADS8354 Converter. Datasheet pdf. Equivalent

Part ADS8354
Description Analog-to-Digital Converter
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ADS8354
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ADS8354, ADS7854, ADS7254
SBAS556B – OCTOBER 2013 – REVISED AUGUST 2014
ADSxx54 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 Fully-Differential Inputs
• High Speed:
– ADS8354: 16 Bits, 700 kSPS
– ADS7854: 14 Bits, 1 MSPS
– ADS7254: 12 Bits, 1 MSPS
• Excellent DC Performance:
– ADS8354:
– 16-Bit NMC DNL, ±2.5-LSB Max INL
– ADS7854:
– 14-Bit NMC DNL, ±1.5-LSB Max INL
– ADS7254:
– 12-Bit NMC DNL, ±1-LSB Max INL
• Excellent AC Performance:
– ADS8354:
– 93-dB SNR, –100-dB THD
– ADS7854:
– 88-dB SNR, –95-dB THD
– ADS7254:
– 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 ADS8354, ADS7854, and ADS7254 belong to a
family of pin-compatible, dual, high-speed,
simultaneous-sampling, analog-to-digital converters
(ADCs) that support fully-differential 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 low-
power 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)
ADSxx54
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
VIN+
VCM
VIN-
1 K 
1 K 
AVDD
VREF
++ -
THS4521
-+
10 
4.7 nF
10 
AVDD
AVDD
VAINP
+
ADSxx54
AINM
GND
1 K 
1 K 
INPUT DRIVER
ADS8354 : 16-bit, 700 kSPS
ADS7854 : 14-bit, 1 MSPS
ADS7254 : 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.



ADS8354
ADS8354, ADS7854, ADS7254
SBAS556B – OCTOBER 2013 – REVISED AUGUST 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configurations and Functions ....................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ..................................... 5
7.2 Handling Ratings....................................................... 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics: ADS8354 ......................... 6
7.6 Electrical Characteristics: ADS7854 ......................... 7
7.7 Electrical Characteristics: ADS7254 ......................... 8
7.8 Electrical Characteristics: All Devices....................... 9
7.9 Timing Requirements: Interface Mode.................... 11
7.10 Timing Characteristics: Serial Interface ................ 11
7.11 Typical Characteristics: ADS8354 ........................ 13
7.12 Typical Characteristics: ADS7854 ........................ 17
7.13 Typical Characteristics: ADS7254 ........................ 22
7.14 Typical Characteristics: Common to ADS8354,
ADS7854, and ADS7254 ......................................... 27
8 Detailed Description ............................................ 28
8.1 Overview ................................................................. 28
8.2 Functional Block Diagram ....................................... 28
8.3 Feature Description................................................. 29
8.4 Device Functional Modes........................................ 33
8.5 Register Maps and Serial Interface......................... 33
9 Application and Implementation ........................ 47
9.1 Application Information............................................ 47
9.2 Typical Applications ................................................ 49
10 Power-Supply Recommendations ..................... 57
11 Layout................................................................... 58
11.1 Layout Guidelines ................................................. 58
11.2 Layout Example .................................................... 58
12 Device and Documentation Support ................. 59
12.1 Related Links ........................................................ 59
12.2 Related Documentation......................................... 59
12.3 Trademarks ........................................................... 59
12.4 Electrostatic Discharge Caution ............................ 59
12.5 Glossary ................................................................ 59
13 Mechanical, Packaging, and Orderable
Information ........................................................... 59
4 Revision History
Changes from Revision A (July 2014) to Revision B
Page
• Made changes to the ADS8354 preview device and moved to Production Data status ........................................................ 1
• Changed document status from Mixed Status to Production Data ........................................................................................ 1
• Corrected cross-reference for Figure 98 .............................................................................................................................. 46
Changes from Original (October 2013) to Revision A
Page
• Made changes to product preview data sheet........................................................................................................................ 1
2
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Product Folder Links: ADS8354 ADS7854 ADS7254





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