SBAS301D October   2003  – February 2020 ADS1204

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Functional Block Diagram
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements: 5.0 V
    7. 6.7 Timing Requirements: 3.0 V
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Analog Input Stage
        1. 7.3.1.1 Analog Input
        2. 7.3.1.2 Modulator
      2. 7.3.2 Digital Output
      3. 7.3.3 Equivalent Input Circuits
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Filter Usage
  9. 9 Power Supply Recommendations
    1. 9.1 Power-Supply Sequencing
    2. 9.2 Power-Supply Decoupling
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

RHB Package
32-Pin VQFN
Top View
ADS1204 po_bas301.gif

NOTE:

The thermal pad is internally connected to the substrate. This pad can be connected to the analog ground or left floating. Keep the thermal pad separate from the digital ground, if possible.

Pin Functions

PIN I/O(1) DESCRIPTION
NAME NO.
CH A+ 1 AI Analog input of channel A: noninverting input
CH A– 2 AI Analog input of channel A: inverting input
CH B+ 3 AI Analog input of channel B: noninverting input
CH B– 4 AI Analog input of channel B: inverting input
CH C– 5 AI Analog input of channel C: inverting input
CH C+ 6 AI Analog input of channel C: noninverting input
CH D– 7 AI Analog input of channel D: inverting input
CH D+ 8 AI Analog input of channel D: noninverting input
REFIN D 9 AI Reference voltage input of channel D: pin for external reference voltage
REFIN C 10 AI Reference voltage input of channel C: pin for external reference voltage
AGND 11 — Analog ground
AVDD 12 P Analog power supply; nominal 5 V
NC 13 — No connection; this pin is left unconnected
AVDD 14 P Analog power supply; nominal 5 V
AGND 15 — Analog ground
CLKSEL 16 I Clock select between internal clock (CLKSEL = 1) or external clock (CLKSEL = 0)
CLKIN 17 I External clock input
BVDD 18 P Digital interface power supply; from 2.7 V to 5.5 V
BGND 19 — Interface ground
CLKOUT 20 O System clock output
OUT D 21 O Bit stream from channel D modulator
OUT C 22 O Bit stream from channel C modulator
OUT B 23 O Bit stream from channel B modulator
OUT A 24 O Bit stream from channel A modulator
NC 25 — No connection; this pin is left unconnected
AGND 26 — Analog ground
AVDD 27 P Analog power supply; nominal 5 V
REFOUT 28 AO Reference voltage output: output pin of the internal reference source; nominal 2.5 V
AVDD 29 P Analog power supply; nominal 5 V
AGND 30 — Analog ground
REFIN B 31 AI Reference voltage input of channel B: pin for external reference voltage
REFIN A 32 AI Reference voltage input of channel A: pin for external reference voltage
(1) AI = analog input; AO = analog output; I = input; O = output; P = power supply.