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| 型号： | TC3404VQRTR |
| 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： | 291K |
| 代理商： | TC3404VQRTR |
2005 Microchip Technology Inc.
DS21413C-page 5
TC3404
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
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 with the negative
input tied internally to GND. See Section 1.0, Electrical Characteristics.
2
IN2+
Analog Input. This is the positive terminal of a true differential input with the negative
input tied internally to GND. See Section 1.0, Electrical Characteristics.
3
IN3+
Analog Input. This is the positive terminal of a true differential input consisting of
4
IN3-
Analog Input. This is the negative terminal of a true differential input consisting of
IN3+ and IN3-. VIN3 = (IN3+ – IN3-) IN3- can swing to, but not below, ground.
See Section 1.0, Electrical Characteristics.
5
IN4+
Analog Input. This is the positive terminal of a true differential input consisting of
6
IN4-
Analog Input. This is the negative terminal of a true differential input consisting of
IN4+ and IN4-. VIN4 = (IN4+ – IN4-) IN4- 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 may be tied directly to REFOUT or scaled using a resistor divider.
Any user supplied reference voltage less than 1.25 may be used in place 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 circuitry to this pin. This pin is in a high impedance state
during Sleep mode. See Section 1.0, Electrical Characteristics.
10
SDAT
Digital Output (push-pull). This is the microPort serial data output. SDAT is driven low
while the TC3404 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
PFO
Digital Output (open drain). This is the output of the internal threshold detector.
When PFI is less than the internal reference, PFO is driven low.
12
PFI
Analog Input. This is the positive input to an internal comparator used as a threshold
detector. The negative input is tied to an internal reference.
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 select 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 TC3404 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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相关代理商/技术参数 |
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| TC3405 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:16-Bit, Low Cost, Low Power Sigma-Delta A/D Converter |
| TC3405A | 制造商:LINER 制造商全称:Linear Technology 功能描述:Standalone Linear Li-lon Battery Charger with Thermistor Input |
| TC3405VPE | 功能描述:模数转换器 - ADC 16-Bit Sigma-Delta 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 |
| TC3405VQR | 功能描述:模数转换器 - ADC 16-Bit Sigma-Delta 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 |
| TC3405VQRTR | 功能描述:模数转换器 - ADC 16-Bit Sigma-Delta 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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