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IC manufacturers Texas Instruments

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Texas Instruments ADS7254IPWR | Demoboard TIDA-00202

SAR ADC, Dual, 1 MSPS, 12 Bit, Simultaneous Sampling

Overview

TopologyOther Topology
Input voltage5 V
IC revisionE1

Description

The TIDA-00202 reference design implements an EMC compliant industrial hybrid analog and digital interface to a HIPERFACE position encoder. A 3.3V supply RS485 transceiver with IEC-ESD and IEC-EFT protection is used for the bidirectional parameter channel. For the analog sin/cos signal channel, two options are provided to offer flexibility for connection to processors with and without embedded ADC or redundancy by using both options simultaneously. The first option features a fully differential dual 12-bit ADC with SPI output, the second option features a dual differential input with single-ended analog output (0-3.3V). The design features an industrial compliant 24V input with wide range from 16V to 36V. The power supply for the encoder can be configured from 7 to 12V (default 11V) and offers short-circuit protection. A 3.3V I/O connector with analog and logic signals provides an easy interface to a host processor with HIPERFACE master IP core. For quick evaluation an example firmware is available for a C2000™ Piccolo MCU to calculate the absolute angle position and display it through virtual COM port.

Features

  • EMC Compliant Interface to HIPERFACE Position Encoders with Digital Bidirectional Parameter Channel up to 38400 Baud and Analog Sin/Cos Channel with at least 150kHz Bandwidth.
  • 3.3V Supply Half-Duplex RS485 Transceiver with 12kV IEC-ESD and 4kV IEC-EFT.
  • Dual Signal Path Option for Sine and Cosine Signals with either Dual 12-bit ADC with SPI Output or Dual Analog Output (0-3.3V) to Offer Flexibility for Connection to MCU with and without Embedded ADC.
  • Host Processor Interface (3.3V I/O) for Easy Connection to MCU like C2000™ for the HIPERFACE Master.
  • Example Firmware on C2000™ Piccolo MCU to Calculate and Display the Interpolated Absolute Angle from HIPERFACE Position Encoders.
  • Designed to Meet EMC Immunity for ESD, Fast Transient Burst, and Surge with Levels according to IEC61800-3.

Typical applications

  • Servo Drives
  • Factory Automation and Control
  • Industrial Drives

Products

Order Code Data­sheet Simu­lation Downloads Product seriesCTol. CVR
(V (DC))
SizeQ
(MHz)
DF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
Technical ReferencePinsGenderTypeOperating TemperatureWorking Voltage
(V (AC))
Samples
885012005044SPEC
6 files WCAP-CSGP MLCCs 25 V(DC)47 pF ±5% 25 0402 100010 GΩ NP0 Class I 1 0.5 0.5 0.25 NP00402470J025DFCT10000 -55 up to +125 °C
885012005061SPEC
6 files WCAP-CSGP MLCCs 50 V(DC)100 pF ±5% 50 0402 100010 GΩ NP0 Class I 1 0.5 0.5 0.25 NP00402101J050DFCT10000 -55 up to +125 °C
885012005063SPEC
6 files WCAP-CSGP MLCCs 50 V(DC)220 pF ±5% 50 0402 100010 GΩ NP0 Class I 1 0.5 0.5 0.25 NP00402221J050DFCT10000 -55 up to +125 °C
885012205037SPEC
6 files WCAP-CSGP MLCCs 16 V(DC)100 nF ±10% 16 0402 55 GΩ X7R Class II 1 0.5 0.5 0.25 X7R0402104K016DFCT10000 -55 up to +125 °C
885012206046SPEC
6 files WCAP-CSGP MLCCs 16 V(DC)100 nF ±10% 16 0603 3.55 GΩ X7R Class II 1.6 0.8 0.8 0.4 X7R0603104K016DFCT10000 -55 up to +125 °C
885012207026SPEC
6 files WCAP-CSGP MLCCs 10 V(DC)10 µF ±10% 10 0805 100.01 GΩ X7R Class II 2 1.25 1.25 0.5 X7R0805106K010DFCT10000 -55 up to +125 °C
618009231121SPEC
6 files WR-DSUB 8.08 mm Female Angled PCB Connector w. Hex Screw5000 MΩ 30.8 9 Female Angled -55 up to +105 °C 125
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesCTol. CVR
(V (DC))
SizeQ
(MHz)
DF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
Technical ReferencePinsGenderTypeOperating TemperatureWorking Voltage
(V (AC))
Samples