参数资料
型号: TC500IOE713
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PDSO16
封装: 0.300 INCH, PLASTIC, MS-013, SOIC-16
文件页数: 31/34页
文件大小: 634K
代理商: TC500IOE713
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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