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TC7109AIJL Datasheet(PDF) 5 Page - TelCom Semiconductor, Inc

No. de pieza TC7109AIJL
Descripción Electrónicos  12-BIT UP-COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS
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Fabricante Electrónico  TELCOM [TelCom Semiconductor, Inc]
Página de inicio  http://www.telcom-semi.com
Logo TELCOM - TelCom Semiconductor, Inc

TC7109AIJL Datasheet(HTML) 5 Page - TelCom Semiconductor, Inc

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TELCOM SEMICONDUCTOR, INC.
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TC7109/A PIN DESCRIPTION
40-Pin PDIP
Pin Number
Symbol
Description
1
GND
Digital ground, 0V, ground return for all digital logic.
2
STATUS
Output HIGH during integrate and deintegrate until data is latched. Output LOW
when analog section is in auto-zero or zero-integrator configuration.
3
POL
Polarity — High for positive input.
4
OR
Overrange — High if overranged.
5B12
Bit 12 (Most Significant Bit)
6B11
Bit 11
7B10
Bit 10
8B9
Bit 9
9B8
Bit 8
10
B7
Bit 7
11
B6
Bit 6
12
B5
Bit 5
13
B4
Bit 4
14
B3
Bit 3
15
B2
Bit 2
16
B1
Bit 1 (Least Significant Bit)
17
TEST
Input High — Normal operation. Input LOW — Forces all bit outputs HIGH.
Note: This input is used for test purposes only.
18
Low-Byte Enable — With MODE (Pin 21) LOW, and CE/LOAD (Pin 20) LOW,
taking this pin LOW activates low-order byte outputs, B1–B8. With MODE (Pin 21)
HIGH, this pin serves as low-byte flag output used in handshake mode. See
Figures 7, 8, and 9.
19
High-Byte Enable — With MODE (Pin 21) LOW, and CE/LOAD (Pin 20) LOW,
taking this pin LOW activates high-order byte outputs, B9–B12, POL, OR. With
MODE (Pin 21) HIGH, this pin serves as high-byte flag output used in handshake
mode. See Figures 7, 8, and 9.
20
Chip Enable/Load — With MODE (Pin 21) LOW, CE/LOAD serves as a master
output enable. When HIGH, B1–B12, POL, OR outputs are disabled. When
MODE (Pin 21) is HIGH, a load strobe is used in handshake mode. See Figure 7,
8, and 9.
21
MODE
Input LOW — Direct output mode where CE/LOAD (Pin 20), HBEN (Pin 19), and
LBEN (Pin 18) act as inputs directly controlling byte outputs.
Input Pulsed HIGH — Causes immediate entry into handshake mode and output
of data as in Figure 9.
Input HIGH — Enables CE/LOAD (Pin 20), HBEN (Pin 19), and LBEN (Pin 18)
as outputs, handshake mode will be entered and data output as in Figures 7 and
8 at conversions completion.
22
OSC IN
Oscillator Input
23
OSC OUT
Oscillator Output
24
OSC SEL
Oscillator Select — Input HIGH configures OSC IN, OSC OUT, BUF OSC OUT as
RC oscillator — clock will be same phase and duty cycle as BUF OSC OUT. Input
LOW configures OSC IN, OSC OUT for crystal oscillator — clock frequency will
be 1/58 of frequency at BUF OSC OUT.
25
BUF OSC OUT
Buffered Oscillator Output
26
Input HIGH — Conversions continuously performed every 8192 clock pulses.
Input LOW — Conversion in progress completed; converter will stop in auto-zero
seven counts before integrate.
HBEN
CE/LOAD
RUN/HOLD
All Three-State Data Bits
TC7109
TC7109A
12-BIT
µP-COMPATIBLE
ANALOG-TO-DIGITAL CONVERTERS
LBEN


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