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| 型号： | TC3402VQRTR |
| 元件分类： | ADC |
| 英文描述： | 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16 |
| 封装： | QSOP-16 |
| 文件页数： | 12/16页 |
| 文件大小： | 444K |
| 代理商： | TC3402VQRTR |
2002 Microchip Technology Inc.
DS21411B-page 5
TC3402
2.0
PIN DESCRIPTIONS
Thedescriptionsof the pins arelistedinTable2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin No.
(16-Pin PDIP)
(16-Pin QSOP)
Symbol
Description
1
IN1+
Analog Input. This is the positive terminal of a true differential input consisting of IN1+ and IN1-.
VIN1 = (IN1+ – IN-). See Section 1.0, Electrical Characteristics.
2
IN1-
Analog Input. This is the negative terminal of a true differential input consisting of IN1+ and IN1-.
VIN1 = (IN+ – IN-) IN1- can swing to, but not below, ground. See Section 1.0, Electrical Characteristics.
3
IN2+
Analog Input. This is the positive terminal of a true differential input consisting of IN2+ and IN2-.
VIN2 = (IN2+ – IN-). (See Section 1.0, Electrical Characteristics.)
4
IN2-
Analog Input. This is the negative terminal of a true differential input consisting of IN2+ and N2-.
VIN2 = (IN+ – IN-) IN2- can swing to, but not below, ground. See Section 1.0, Electrical Characteristics.
5
IN3+
Analog Input. This is the positive terminal of a true differential input consisting of IN3+ and IN3-.
VIN3 = (IN3+ – IN-). See Section 1.0, Electrical Characteristics.
6
IN3-
Analog Input. This is the negative terminal of a true differential input consisting of IN3+ and IN3-.
VIN3 = (IN+ – IN-) IN1- can swing to, but not below, ground. See Section 1.0, Electrical Characteristics.
7REFIN
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
voltagelessthan 1.25V maybeusedinplace of REFOUT.
8
GND
Ground Terminal.
9REFOUT Analog Output. The internal reference connects to this pin. It may be scaled externally and tied to the
REFIN input to provide the converter’s reference voltage. Care must be taken in connecting external
circuitrytothispin.
10
SDAT
Digital Output (push-pull). This is the microPort serial data output. SDAT is driven low while the
TC3402 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).
11
IN4-
Analog Input. This is the negative terminal of a true differential input consisting of IN4+ and IN4-.
VIN4 = (IN+ – IN-) IN4- can swing to, but not below, ground. See Section 1.0, Electrical Characteristics.
12
IN4+
Analog Input. This is the positive terminal of a true differential input consisting of IN4+ and IN4-.
VIN4 = (IN4+ – IN-). See Section 1.0, Electrical Characteristics.
13
A1
Digital Input. Controls analog multiplexer in conjunction with A0 to select one of the four Input
channels. This address is latched at the falling edge of the SCLK, which starts an A/D conversion.
A1, A0 = 00 = Input 1; 01 = Input 2; 10 = Input 3; 11 = Input 4.
14
A0
Digital Input. Controls analog multiplexer in conjunction with A1 to selec one of four Input
channels. This address is latched at the falling edge of the SCLK, which starts an A/D conversion.
A1, A0 = 00 = Input 1; 01 = Input 2; 10 = Input 3; 11 = Input 4.
15
SCLK
Digital Input. This is the microPort serial clock input. The TC3402 comes out of Sleep mode and a
conversion cycle begins when this pin is driven low. After the conversion starts, each additional falling
edge (up to six) detected on SCLK 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.
16
VDD
Power Supply Input.
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| TC3403 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:+1.8V Low Power, Quad Input, 16-Bit Sigma-Delta A/D Converter with a Power Fault Monitor and Microprocessor Reset Circuit |
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| TC3403VQR | 功能描述:模数转换器 - ADC 1.8V Lw Pwr Quad RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| TC3403VQRTR | 功能描述:模数转换器 - ADC 1.8V Lw Pwr Quad RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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