參數(shù)資料
型號(hào)： TMS0320F2810PBKAEP
廠商： Texas Instruments, Inc.
元件分類： 數(shù)字信號(hào)處理
英文描述： Digital Signal Processors
中文描述： 數(shù)字信號(hào)處理器
文件頁數(shù)： 65/159頁
文件大?。?/td> 2084K
代理商： TMS0320F2810PBKAEP
Peripherals
65
March 2004 Revised October 2004
SGUS051A
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 03 V With Respect to ADCLO
Connect to Analog Ground
24.9 k
20 k
(See Note C)
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 F 10 F
2 V
1 V
1 F 10 F
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. Use 24.9 k
for ADC clock range 1 18.75 MHz; use 20 k
for ADC clock range 18.75 25 MHz.
D. It is recommended that buffered external references be provided with a voltage difference of (ADCREFPADCREFM)
= 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 ADCREFPADCREFM 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 D)
Figure 46. ADC Pin Connections With External Reference
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