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| 型号： | TC534CPL |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDIP40 |
| 封装： | PLASTIC, DIP-40 |
| 文件页数： | 1/28页 |
| 文件大小： | 568K |
| 代理商： | TC534CPL |
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2007 Microchip Technology Inc.
DS21433C-page 1
TC530/TC534
Features
Precision (up to 17-Bits) A/D Converter
3-Wire Serial Port
Flexible: User Can Trade Off Conversion Speed
For Resolution
Single Supply Operation
-5V Output Pin
4 Input, Differential Analog MUX (TC530)
Automatic Input Polarity and Overrange Detection
Low Operating Current: 5mA Max
Wide Analog Input Range: ±4.2V Max
Cost Effective
Applications
Precision Analog Signal Processor
Precision Sensor Interface
High Accuracy DC Measurements
General Description
The TC530/TC534 are serial analog data acquisition
subsystems ideal for high precision measurements (up
to 17-bits plus sign). The TC534 consists of a dual
slope integrating
A/D converter, negative power
supply generator and 3 wire serial interface port. The
TC530 is identical to the TC534, but adds a four
channel differential input multiplexer. Key A/D
converter operating parameters (Auto Zero and Inte-
gration time) are programmable, allowing the user to
trade conversion time for resolution.
Data conversion is initiated when the RESET input is
brought low. After conversion, data is loaded into the
output shift register and EOC is asserted, indicating
new data is available. The converted data (plus Over-
range and polarity bits) is held in the output shift
register until read by the processor or until the next
conversion is completed, allowing the user to access
data at any time.
The TC530/TC534 timebase can be derived from an
external crystal of 2MHz (max) or from an external fre-
quency source. The TC530/TC534 requires a single 5V
power supply and features a -5V, 10mA output which
can be used to supply negative bias to other
components in the system.
Typical Application
A0 A1
OSCIN
R/W
DIN
DOUT
DCLK
OSCOUT
OSC
RESET
CAP+ CAP–
CAZ
TC530
TC534
CREF
RINT
CINT
TC534
(Only)
(TC530 Only)
DC-TO-DC
Converter
State
Machine
Serial Port
Negative
Supply Output
Oscillator
(
÷ 4)
Dual Slope A/D Converter
.01 F
0.01 F
Optional
Power-On
Reset Cap
100 k
Ω
+5V
DIF.
MUX
(TC534
Only)
AB
CMPTR
BUF
INT
CAZ
ACOM
VDD
VSS
MCP1525
VREF-
VREF+
VIN-
VIN+
EOC
CH2+
CH3+
CH1+
CH4+
CH4-
CH3-
CH2-
CH1-
IN+
IN-
CREF-
CREF+
5V Precision Data Acquisition Subsystems
Obsolete Device
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