參數(shù)資料
型號： TC7109CPL
廠商： Microchip Technology
文件頁數(shù)： 5/30頁
文件大小： 0K
描述： IC ADC 12BIT HANDSHAKE 40DIP
標(biāo)準(zhǔn)包裝： 10
位數(shù)： 12
數(shù)據(jù)接口： 串行，并聯(lián)
轉(zhuǎn)換器數(shù)目： 1
電壓電源： 雙 ±
工作溫度： 0°C ~ 70°C
安裝類型： 通孔
封裝/外殼： 40-DIP（0.600"，15.24mm）
供應(yīng)商設(shè)備封裝： 40-PDIP
包裝： 管件
輸入數(shù)目和類型： 1 個差分，單極
產(chǎn)品目錄頁面： 673 (CN2011-ZH PDF)
其它名稱： 158-1059
158-1059-ND
2006 Microchip Technology Inc.
DS21456C-page 13
TC7109/A
FIGURE 3-5:
TC7109A RC Oscillator
With OSCILLATOR SELECT input LOW, two on-chip
capacitors and a feedback device are added to the
oscillator. In this configuration, the oscillator will oper-
ate with most crystals in the 1MHz to 5MHz range, with
no external components (Figure ). The OSCILLATOR
SELECT input LOW inserts a fixed 458 divider circuit
between the BUFFERED OSCILLATOR OUTPUT and
the internal clock. A 3.58MHz TV crystal gives a
division ratio, providing an integration time given by:
EQUATION 3-1:
FIGURE 3-6:
Crystal Oscillator
The error is less than 1% from two 60Hz periods, or
33.33msec, which will give better than 40dB, 60Hz
rejection. The converter will operate reliably at conver-
sion rates up to 30 per second, corresponding to a
clock frequency of 245.8kHz.
When the oscillator is to be over driven, the OSCILLA-
TOR OUTPUT should be left open, and the over driving
signal should be applied at the OSCILLATOR INPUT.
The internal clock will be of the same duty cycle, fre-
quency and phase as the input signal. When the
OSCILLATOR SELECT is at GND, the clock will be
1/58 of the input frequency.
FIGURE 3-7:
TC7109A Handshake with Send Input Held Positive
23
OSC
OUT
25
Buffered
OSC OUT
24
OSC
SEL
V+ or Open
22
OSC
IN
R
C
FOSC = 0.45/RC
t = (2048 clock periods)
= 33.18 msec
58
3.58 MHz
23
OSC
OUT
25
Buffered
OSC OUT
24
OSC
SEL
GND
V+
22
OSC
IN
58
Clock
Crystal
÷
= Three-State
High-Impendance
Integrator Output
Data Invalid
Data Valid
Internal Clock
Internal Latch
Status Output
Mode Input
Internal Mode
Send Input
CE/LOAD
HBEN
High Byte Data
LBEN
Low Byte Data
= Don't Care
= Three-State
will Pull-up
UART
Norm
Terminates
UART Mode
Zero Crossing Detected
Zero Crossing Occurs
Send Sensed
Mode Low, not
in Handshake Mode
Disables Outputs
CE/LOAD,
HBEN,
LBEN
Mode High Activates
CE/LOAD, HBEN, LBEN
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TC7109CPL 制造商:Microchip Technology Inc 功能描述:IC 12BIT ADC 7109 DIP40
TC7109CPL 制造商:Microchip Technology Inc 功能描述:Special Function IC Package/Case:40-PDIP
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TC7-10-C100 功能描述:電纜固定件和配件 CBL STRAP W/ TACK NAIL RoHS:否 制造商:Heyco 類型:Cable Grips, Liquid Tight 材料:Nylon 顏色:Black 安裝方法:Cable 最大光束直徑:11.4 mm 抗拉強(qiáng)度:
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