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TMP320C2811PBKA Datasheet(PDF) 61 Page - Texas Instruments

Part # TMP320C2811PBKA
Description  TMS320R2811, TMS320R2812 Digital Signal Processors
PDF  147 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TMP320C2811PBKA Datasheet(HTML) 61 Page - Texas Instruments

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Peripherals
61
June 2004
SPRS257
ADCINA[7:0]
ADCINB[7:0]
ADCLO
ADCBGREFIN
ADC External Current Bias Resistor
ADCRESEXT
ADCREFP
VDDA1
VDDA2
VSSA1
VSSA2
AVDDREFBG
AVSSREFBG
VDDAIO
VSSAIO
VDD1
VSS1
Test Pin
ADC Reference Positive Input
ADCREFM
ADC Reference Medium Input
ADC Analog Power
ADC Reference Power
ADC Analog I/O Power
ADC Digital Power
Analog Input 0−3 V With Respect to ADCLO
Connect to Analog Ground
24.9 kW
Analog 3.3 V
Analog 3.3 V
Analog 3.3 V
Analog 3.3 V
Analog Ground
1.8 V Can use the same 1.8-V (or 1.9-V)
supply as the digital core but separate the
two with a ferrite bead or a filter
Digital Ground
ADC 16-Channel Analog Inputs
1 mF −10 mF
2 V
1 V
1 mF − 10 mF
NOTES: A. External decoupling capacitors are recommended on all power pins.
B. Analog inputs must be driven from an operational amplifier that does not degrade the ADC performance.
C. It is recommended that buffered external references be provided with a voltage difference of (ADCREFP−ADCREFM)
= 1 V $ 0.1% or better.
External reference is enabled using bit 8 in the ADCTRL3 Register at ADC power up. In this mode, the accuracy of
external reference is critical for overall gain. The voltage ADCREFP−ADCREFM will determine the overall accuracy.
Do not enable internal references when external references are connected to ADCREFP and ADCREFM. See the
TMS320F28x DSP Analog-to-Digital Converter (ADC) Reference Guide
(literature number SPRU060) for more
information.
(See
Note C)
Figure 4−6. ADC Pin Connections With External Reference



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