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参数资料
| 型号： | TC500CJE |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, CDIP16 |
| 封装： | 0.300 INCH, MS-030, CERDIP-16 |
| 文件页数： | 31/34页 |
| 文件大小： | 634K |
| 代理商： | TC500CJE |
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TC500/A/510/514
DS21428D-page 6
2006 Microchip Technology Inc.
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
Pin No.
Symbol
Function
TC500,
TC500A
TC510
TC514
12
2
CINT
Integrator output. Integrator capacitor connection.
2
Not Used
VSS
Negative power supply input (TC500/TC500A only).
33
3
CAZ
Auto-zero input. The auto-zero capacitor connection.
4
BUF
Buffer output. The Integrator capacitor connection.
5
ACOM
This pin is grounded in most applications. It is recommended that ACOM and the
input common pin (Ven- or CHn-) be within the analog Common Mode Range (CMR).
66
6
CREF-
Input. Negative reference capacitor connection.
77
7
CREF+ Input. Positive reference capacitor connection.
88
8
VREF-
Input. External voltage reference (-) connection.
99
9
VREF+ Input. External voltage reference (+) connection.
10
15
Not Used
VIN-
Negative analog input.
11
16
Not Used
VIN+
Positive analog input.
12
18
22
A
Input. Converter phase control MSB. (See input B.)
13
17
21
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:
Phase control input pins:
AB =
00: Integrator zero
01: Auto-zero
10: Integrate
11: De-integrate
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
De-integrate phase is completed. CMPTR is undefined during the auto-zero phase. It
should be monitored to time the integrator zero phase.
15
23
27
DGND
Input. Digital ground.
16
21
25
VDD
Input. Power supply positive connection.
—
22
26
CAP+
Input. Negative power supply converter capacitor (+) connection.
—
24
28
CAP-
Input. Negative power supply converter capacitor (-) connection.
—1
1
VOUT-
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.
—
20
24
OSC
Oscillator control input. The negative power supply converter normally runs at a
frequency of 100 kHz. The converter oscillator frequency can be slowed down (to
reduce quiescent current) by connecting an external capacitor between this pin and
—
18
CH1+
Positive analog input pin. MUX channel 1.
—
13
CH1-
Negative analog input pin. MUX channel 1.
—
17
CH2+
Positive analog input pin. MUX channel 2.
—
12
CH2-
Negative analog input pin. MUX channel 2.
—
16
CH3+
Positive analog input pin. MUX channel 3.
—
11
CH3-
Negative analog input pin. MUX channel 3.
—
15
CH4+
Positive analog input pin. MUX channel 4.
—
10
CH4-
Negative analog input pin. MUX channel 4
—
20
A0
Multiplexer input channel select input LSB (see A1).
—
19
A1
Multiplexer input channel select input MSB.
Phase control input pins: A1, A0 =
00 = Channel 1
01 = Channel 2
10 = Channel 3
11 = Channel 4
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