參數(shù)資料
型號: TC7117ACKWTR
元件分類: ADC
英文描述: 1-CH 22-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQFP44
封裝: PLASTIC, QFP-44
文件頁數(shù): 22/24頁
文件大?。?/td> 410K
代理商: TC7117ACKWTR
2006 Microchip Technology Inc.
DS21457C-page 7
TC7116/A/TC7117/A
34
42
CREF+A 0.1μF capacitor is used in most applications. If a large Common mode voltage
exists (for example, the VIN- pin is not at analog common), and a 200mV scale is
used, a 1
μF capacitor is recommended and will hold the rollover error to
0.5 count.
35
43
V+
Positive Power Supply Voltage.
36
44
VREF+
The analog input required to generate a full scale output (1999 counts). Place
100mV between Pins 32 and 36 for 199.9mV full scale. Place 1V between
Pins 35 and 36 for 2V full scale. See Section 4.6 “Reference Voltage”, Refer-
ence Voltage.
37
3
TEST
Lamp test. When pulled HIGH (to V+), all segments will be turned on and the dis-
play should read -1888. It may also be used as a negative supply for externally
generated decimal points. See Section 3.1.7 “Test”, TEST for additional infor-
mation.
38
4
OSC3
See Pin 40.
39
6
OSC2
See Pin 40.
40
7
OSC1
Pins 40, 39, 38 make up the oscillator section. For a 48kHz clock (3 readings per
section), connect Pin 40 to the junction of a 100k
Ω resistor and a 100pF capaci-
tor. The 100k
Ω resistor is tied to Pin 39 and the 100pF capacitor is tied to Pin 38.
TABLE 2-1:
PIN FUNCTION TABLE (CONTINUED)
Pin Number
(40-Pin PDIP)
(40-Pin CERDIP)
Pin Number
(44-Pin PQFP)
Symbol
Description
相關(guān)PDF資料
PDF描述
TC7117ACLWTR 1-CH 22-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQCC44
TC7117ACLW 1-CH 22-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQCC44
TC7117AIJL 1-CH 22-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, CDIP40
TC7117CKW 1-CH 22-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQFP44
TC7117IJL 1-CH 22-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, CDIP40
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