參數(shù)資料
型號: TMS320M642AZDK5
廠商: Texas Instruments, Inc.
英文描述: 1A, 52kHz (250khz Max) Current Mode PWM Control Circuit with 16V UVLO Threshold and 48% Max Duty Cycle<sup>3</sup><sup>3</sup><sup>3</sup><sup>3</sup><sup>3</sup><sup>3</sup><sup>3</sup><sup>3</sup><sup>3</sup><sup>3</sup><sup>3</sup> ; Package: SOIC-8 Narrow Body; No of Pins: 8; Container: Rail; Qty per Container: 98
中文描述: 視頻/影像定點數(shù)字信號處理器
文件頁數(shù): 58/123頁
文件大?。?/td> 1205K
代理商: TMS320M642AZDK5
www.ti.com
ADCINA[7:0]
ADCINB[7:0]
ADCLO
ADCREFIN
ADC External Current Bias Resistor
ADCRESEXT
ADCREFP
V
DD1A18
V
DD2A18
V
SS1AGND
V
SS2AGND
V
DDAIO
V
SSAIO
V
DDA2
V
SSA2
ADC Reference Positive Output
ADCREFM
ADC Reference Medium Output
ADC Analog Power
ADC Analog and Reference I/O Power
Analog input 03 V with respect to ADCLO
Connect to Analog Ground
Connect to 1.500, 1.024, or 2.048-V precision source
(D)
22 k
2.2 F
(A)
2.2 F
(A)
ADCREFP and ADCREFM should not
be loaded by external circuitry
ADC 16-Channel Analog Inputs
ADC Analog Power Pin (1.8 V)
ADC Analog Power Pin (1.8 V)
ADC Analog Ground Pin
ADC Analog Ground Pin
ADC Analog I/O Ground Pin
ADC Analog Power Pin (3.3 V)
ADC Analog Ground Pin
ADC Analog Power Pin (3.3 V)
TMS320F2808, TMS320F2806
TMS320F2801, UCD9501
Digital Signal Processors
SPRS230F–OCTOBER 2003–REVISED SEPTEMBER 2005
A.
B.
C.
D.
TAIYO YUDEN LMK212BJ225MG-T or equivalent
External decoupling capacitors are recommended on all power pins.
Analog inputs must be driven from an operational amplifier that does not degrade the ADC performance.
External voltage on ADCREFIN is enabled by changing bits 15:14 in the ADC Reference Select register depending on
the voltage used on this pin. TI recommends TI part REF3020 or equivalent for 2.048-V generation. Overall gain
accuracy will be determined by accuracy of this voltage source.
Figure 4-9. ADC Pin Connections With External Reference
NOTE
The temperature rating of any recommended component must match the rating of the end
product.
The ADC operation is configured, controlled, and monitored by the registers listed in
Table 4-5
.
58
Peripherals
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