參數(shù)資料
型號(hào)： TC500CPE
廠商： TelCom Semiconductor, Inc.
英文描述： PRECISION ANALOG FRONT ENDS
中文描述： 精密模擬前端
文件頁(yè)數(shù)： 5/17頁(yè)
文件大小： 209K
代理商： TC500CPE
3-23
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
PIN DESCRIPTION
Pin No
Pin No
Pin No
(TC514)
(TC500, 500A) (TC510)
Symbol
Description
1
2
3
4
5
2
2
C
INT
V
SS
C
AZ
BUF
ACOM
Integrator output. Integrator capacitor connection.
Negative power supply input (TC500/500A only).
Auto-zero input. The Auto-zero capacitor connection.
Buffer output. The Integrator capacitor connection.
This pin is grounded in most applications. It is recommended that
ACOM and the input common pin (V
analog common mode range (CMR).
Input. Negative reference capacitor connection.
Input. Positive reference capacitor connection.
Input. External voltage reference (–) connection.
Input. External voltage reference (+) connection.
Negative analog input.
Positive analog input.
Input. Converter phase control MSB. (See input B.)
Input. Converter phase control LSB. The states of A, B place the
TC5xx in one of four required phases. A conversion is complete
when all four phases have been executed:
Not Used
3
4
5
Not Used
3
4
5
–
or
C
–
) be within the
6
7
8
9
6
7
8
9
6
7
8
9
C
C
V
V
V
–
V
+
–
+
–
+
10
11
12
13
15
16
18
17
Not Used
Not Used
22
21
IN
IN
A
B
00: Integrator Zero
01: Auto Zero
10: Integrate
11: Deintegrate
Phase control input pins: AB =
14
19
23
CMPTR OUT
Zero crossing comparator output. CMPTR is HIGH during the
Integration phase when a positive input voltage is being integrated
and is LOW when a negative input voltage is being integrated. A
HIGH-to-LOW transition on CMPTR signals the processor that the
Deintegrate phase is completed. CMPTR is undefined during the
Auto-Zero phase. It should be monitored to time the Integrator Zero
phase (see text).
Input. Digital ground.
Input. Power supply positive connection.
Input. Negative power supply converter capacitor (+) connection.
Input. Negative power supply converter capacitor (–) connection.
Output. Negative power supply converter output and reservoir
capacitor connection. This output can be used to power other
devices in the circuit requiring a negative bias voltage.
Oscillator control input. The negative power supply converter normally
runs at a frequency of 100kHz. The converter oscillator frequency can
be slowed down (to reduce quiescent current) by connecting an
external capacitor between this pin and V
DD
. (See Typical Character-
istics Curves).
Positive analog input pin. MUX channel 1.
Negative analog input pin. MUX channel 1.
Positive analog input pin. MUX channel 2.
Negative analog input pin. MUX channel 2.
Positive analog input pin. MUX channel 3.
Negative analog input pin. MUX channel 3.
Positive analog input pin. MUX channel 4.
15
16
23
21
22
24
1
27
25
26
28
1
DGND
V
DD
CAP
+
CAP–
V
–
20
24
OSC
18
13
17
12
16
11
15
CH1
+
CH1
–
CH2
+
CH2
–
CH3
+
CH3
–
CH4
+
PRECISION ANALOG FRONT ENDS
TC500
TC500A
TC510
TC514
相關(guān)PDF資料
PDF描述
TC514CPJ PRECISION ANALOG FRONT ENDS
TC510CPF PRECISION ANALOG FRONT ENDS
TC514 PRECISION ANALOG FRONT ENDS
TC500ACOE PRECISION ANALOG FRONT ENDS
TC510COG PRECISION ANALOG FRONT ENDS
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