参数资料
| 型号： | ADS7883SBDBVR |
| 厂商： | Texas Instruments |
| 文件页数： | 3/19页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12-BIT 3MSPS SOT23-6 |
| 标准包装： | 3,000 |
| 位数： | 12 |
| 采样率（每秒）： | 3M |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 20mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-23-6 |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个单端，单极 |
APPLICATION INFORMATION
50 W
20 pF
20 W
7 pF
VDD
IN
GND
Driving the VIN and VDD Pins
VDD
VIN
GND
CS
SDO
SCLK
10 nF
1 mF
VDD
VDD
VIN
GND
CS
SDO
SCLK
10nF
1 mF
GND
IN
OUT
3V/5V
1mF
5V/7V
REF5030/REF5050
www.ti.com ....................................................................................................................................................................................................... SLAS594 – JULY 2008
Figure 24. Typical Equivalent Sampling Circuit
The VIN input to the ADS7883 should be driven with a low impedance source. In most cases additional buffers
are not required. In cases where the source impedance exceeds 200
, using a buffer would help achieve the
rated performance of the converter. The THS4031 is a good choice for the driver amplifier buffer.
The reference voltage for the ADS7883 A/D converter is derived from the supply voltage internally. The device
offers limited low-pass filtering functionality on-chip. The supply to these converters should be driven with a low
impedance source and should be decoupled to the ground. A 1-F storage capacitor and a 10-nF decoupling
capacitor should be placed close to the device. Wide, low impedance traces should be used to connect the
capacitor to the pins of the device. The ADS7883 draws very little current from the supply lines. The supply line
can be driven by either:
Directly from the system supply.
A reference output from a low drift and low drop out reference voltage generator like the REF5030 or
REF5050. The ADS7883 can operate with a wide range of supply voltages. The actual choice of the
reference voltage generator depends upon the system. Figure 26 shows one possible application circuit.
A low-pass filtered version of the system supply followed by a buffer like the zero-drift OPA735 can also be
used in cases where the system power supply is noisy. Care should be taken to ensure that the voltage at the
VDD input does not exceed 7 V (especially during power up) to avoid damage to the converter. This can be
done easily using single supply CMOS amplifiers like the OPA735. Figure 27 shows one possible application
circuit.
Figure 25. Supply/Reference Decoupling Capacitors
Figure 26. Using the REF5030/REF5050 Reference
Copyright 2008, Texas Instruments Incorporated
11
Product Folder Link(s): ADS7883
相关PDF资料 |
PDF描述 |
|---|---|
| ADS8361IDBQG4 | IC ADC DUAL 16BIT 500KSPS 24QSOP |
| ADS8364Y/250G4 | IC ADC LP 16BIT 250KSPS 64-TQFP |
| ADS8412IPFBRG4 | IC ADC 16BIT 2MSPS 48-TQFP |
| ADV7180WBCPZ | IC VIDEO DECODER SDTV 40LFCSP |
| ADV7186BBCZ | IC VIDEO DECODER 196CSPBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADS7883SBDBVT | 功能描述:模数转换器 - ADC 2.7V-5.5V 12B 3MSPS Serial ADC 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 |
| ADS7883SDBVR | 功能描述:模数转换器 - ADC 2.7V-5.5V 12B 3MSPS Serial ADC 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 |
| ADS7883SDBVT | 功能描述:模数转换器 - ADC 2.7V-5.5V 12B 3MSPS Serial ADC 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 |
| ADS7884 | 制造商:TI 制造商全称:Texas Instruments 功能描述:12-BIT, 3-MSPS, MICROPOWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTER |
| ADS7884EVM | 功能描述:数据转换 IC 开发工具 ADS7884 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
发布紧急采购，3分钟左右您将得到回复。