
58
Analog Front End IC TMS37122 - Reference Guide
August ’01
Chapter 4:
Product Specification Data
This chapter describes all of the product specifications that you need to know in order to in-
tegrate the device into your system.
Topic
Page
4.1
4.2
Absolute Maximum Ratings....................................................................59
Recommended System Operating Conditions......................................60
4.2.1
Base Station - Test Station Conditions ................................................60
4.2.2
Identification Device Conditions...........................................................60
4.2.3
Recommended Operating Conditions for IC ........................................61
4.2.3.1
Identification Device Antennas ...................................................61
4.2.3.2
Resonant Circuit Capacitor.........................................................61
4.2.3.3
Charge Capacitor........................................................................61
4.2.3.4
IC................................................................................................62
4.2.4
IC Characteristics over Operating Free-air Temperature Range .........63
4.2.4.1
General IC Characteristics..........................................................63
4.2.4.2
Input Capacitances.....................................................................63
4.2.4.3
Modulation Capacitor..................................................................63
4.2.4.4
Trimming Capacitors and Switches............................................64
4.2.4.5
CLKA Watchdog Circuit..............................................................64
4.2.4.6
Clock Regenerator/ Pluck Logic .................................................65
4.2.4.7
RF Limiter...................................................................................65
4.2.4.8
VCL Limiter.................................................................................65
4.2.4.9
Voltage Regulator.......................................................................65
4.2.4.10 Supply and Reference Currents .................................................66
4.2.4.11 Wake Detector............................................................................66
4.2.4.12 CLKA Sensitivity.........................................................................70
4.2.4.13 EOBA Sensitivity.........................................................................70
4.2.4.14 AGC Amplifier.............................................................................70
4.2.4.16 Control Interface.........................................................................72
4.2.4.17 Clock Supervision.......................................................................72
4.2.4.18 Pulse Position Demodulator .......................................................73
4.2.4.19 Electrostatic Discharge...............................................................73
4.2.4.20 Package......................................................................................73