參數(shù)資料
型號: TLC1225MFK
廠商: TEXAS INSTRUMENTS INC
元件分類: ADC
英文描述: 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CQCC28
封裝: CERAMIC, LCC-28
文件頁數(shù): 4/15頁
文件大?。?/td> 230K
代理商: TLC1225MFK
TLC1225I, TLC1225M
SELF-CALIBRATING 12-BIT-PLUS-SIGN
ANALOG-TO-DIGITAL CONVERTERS
SLAS029B – AUGUST 1990 – REVISED DECEMBER 1993
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
LSB = Vref ÷ 4096
4094.5
– 0.5
– 4095.5
(LSB)
INPUT VOLTAGE
ANALOG
4094 to 4095
0 to 1
– 1 to 0
– 4096 to – 4095
(DECIMAL)
TRANSITION
CODE
(4095) 0 1111 1111 1111
(4094) 0 1111 1111 1110
(2) 0 0000 0000 0010
(1) 0 0000 0000 0001
(0) 0 0000 0000 0000
– Vref
Analog Input Voltage [VIN(+) – VIN(–)]
1 0000 0000 0000 (– 4096)
1 0000 0000 0001 (– 4095)
+ Vref
1 1111 1111 1110 (– 2)
1 1111 1111 1111 (– 1)
LSB
Positive
Full-Scale
Transition
Zero Transition
Negative
Full-Scale
Transition
Output
Code
0.5
Figure 5. Transfer Characteristic
ANLG VCC –
ANLG VCC +
DGTL VCC
TIE HIGH
DGTL GND
ANLG GND
REF
IN –
IN +
Power GND
Signal GND
(see Note A)
Signal In
+
10
F
+
0.1
F
0.1
F
10
F
0.1
F
0.1
F
(see Note B)
(see Notes B and C)
(see Note B)
5
3
2
4
12
1
7
28
6
TLC1225
NOTES: A. The analog input must have some current return path to ANLG GND.
B. Bypass capacitor leads must be as short as possible.
C. For high-accuracy applications, use a larger capacitor to reduce reference noise.
Figure 6. Analog Considerations
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