Specifications

V
A
DCLK
1900
1710
time
mV
660
635
1490
520
300
1210
Slope = 1.22V/ms
ADC12D1000RF, ADC12D1600RF
SNAS519G –JULY 2011–REVISED APRIL 2013 www.ti.com
Figure 6-15. Supply and DCLK Ramping
6.4.7 RECOMMENDED SYSTEM CHIPS
TI recommends these other chips including temperature sensors, clocking devices, and amplifiers in order
to support the ADC12D1600/1000RF in a system design.
6.4.7.1 Temperature Sensor
The ADC12D1600/1000RF has an on-die temperature diode connected to pins Tdiode+/- which may be
used to monitor the die temperature. TI also provides a family of temperature sensors for this application
which monitor different numbers of external devices, see Table 6-11.
Table 6-11. Temperature Sensor Recommendation
Number of External Devices
Recommended Temperature Sensor
Monitored
1 LM95235
2 LM95213
4 LM95214
The temperature sensor (LM95235/13/14) is an 11-bit digital temperature sensor with a 2-wire System
Management Bus (SMBus) interface that can monitor the temperature of one, two, or four remote diodes
as well as its own temperature. It can be used to accurately monitor the temperature of up to one, two, or
four external devices such as the ADC12D1600/1000RF, a FPGA, other system components, and the
ambient temperature.
The temperature sensor reports temperature in two different formats for +127.875°C/-128°C range and
0°/255°C range. It has a Sigma-Delta ADC core which provides the first level of noise immunity. For
improved performance in a noisy environment, the temperature sensor includes programmable digital
filters for Remote Diode temperature readings. When the digital filters are invoked, the resolution for the
Remote Diode readings increases to 0.03125°C. For maximum flexibility and best accuracy, the
temperature sensor includes offset registers that allow calibration for other types of diodes.
Diode fault detection circuitry in the temperature sensor can detect the absence or fault state of a remote
diode: whether D+ is shorted to the power supply, D- or ground, or floating.
62 Functional Description Copyright © 2011–2013, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: ADC12D1000RF ADC12D1600RF