参数资料
型号: TC3400VOA
厂商: Microchip Technology
文件页数: 12/16页
文件大小: 0K
描述: IC ADC 16BIT 1.8V LOW PWR 8-SOIC
标准包装: 100
位数: 16
采样率(每秒): 8
数据接口: 串行
转换器数目: 1
电压电源: 单电源
工作温度: 0°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOICN
包装: 管件
输入数目和类型: 1 个差分,单极
2002 Microchip Technology Inc.
DS21409B-page 5
TC3400
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin No.
(8-Pin SOIC)
(8-Pin PDIP)
Symbol
Description
1
IN+
Analog Input. This is the positive terminal of a true differential input consisting of IN+ and IN-.
VIN1 = (IN+ – IN-). See Section 1.0 Electrical Characteristics.
2
IN-
Analog Input. This is the negative terminal of a true differential input consisting of IN+ and IN-.
VIN = (IN+ – IN-) IN- can swing to, but not below, ground.
3REFIN
Analog Input. The converter’s reference voltage is the differential between this pin and ground times
two. It maybetieddirectlytoREFOUT or scaled using a resistor divider. Any user supplied reference
voltagelessthan1.25V maybeusedinplace of REFOUT.
4
GND
Ground Terminal.
5REFOUT
Analog Output. The internal reference connects to this pin. It may be scaled externally, if desired, and
tied to the REFIN input to provide the converter’s reference voltage. Care must be taken in connecting
external circuitry to this pin.
6
SDAT
Digital Output (push-pull). This is the microPort serial data output. SDAT is driven low while the
TC3400 is converting data, effectively providing a “busy” signal. After the conversion is complete,
every high to low transition on the SCLK pin puts a bit from the resulting data word on the SDAT pin
(from MSB to LSB).
7
SCLK
Digital Input. This is the microPort serial clock input. The TC3400 comes out of sleep mode and a
conversion cycle begins when this pin is driven low. After the conversion starts, each additional falling
edge (uptosix) detected onSCLK for t4 seconds reduces the A/D resolution by one bit. When the
conversion is complete, the data word can be shifted out on the SDAT pin by clocking the SCLK pin.
8VDD
Power Supply Input.
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