- 您现在的位置：买卖IC网 > PDF目录67319 > THS1401CPFB (TEXAS INSTRUMENTS INC) 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 PDF资料下载
参数资料
| 型号： | THS1401CPFB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| 封装： | PLASTIC, TQFP-48 |
| 文件页数： | 11/28页 |
| 文件大小： | 625K |
| 代理商： | THS1401CPFB |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页当前第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
THS1401
THS1403
THS1408
SLAS248D DECEMBER 1999 REVISED SEPTEMBER 2005
www.ti.com
19
APPLICATION INFORMATION
internal/external reference operation
The THS1401/3/8 ADC can either be operated
using the built-in band gap reference or using an
external precision reference in case very high dc
accuracy is needed.
The REF+ and REF+ outputs are given by:
REF
)+ VBG 1 ) 2
3
and REF–
If the built-in reference is used, VBG equals 1.5 V
which results in REF+ = 2.5 V, REF = 0.5 V and
REF = 2 V.
The internal reference can be disabled by writing
1 to D12 (REF) in the control register (address 3).
The band gap reference is then disconnected and
can be substituted by a voltage on the VBG pin.
programmable gain amplifier
The on-chip programmable gain amplifier (PGA)
has eight gain settings. The gain can be changed
by writing to the PGA gain register (address 1).
The range is 0 to 7dB in steps of one dB.
out of range indication
The OV output of the ADC indicates an out of
range condition. Every time the difference on the
analog inputs exceeds the differential reference,
this signal is asserted. This signal is updated the
same way as the digital data outputs and therefore
subject to the same pipeline delay.
offset compensation
With
the
offset
register
it
is
possible
to
automatically compensate system offset errors,
including errors caused by additional signal
conditioning circuitry. If the offset compensation is
enabled (D7 (OFF) in the control register), the
value in the offset register (address 2) is
automatically added to the output of the ADC.
In order to set the correct value of the offset
compensation register, the ADC result when the
input signal is 0 must be read by the host
processor and written to the offset register
(address 2).
test modes
The ADC core operation can be tested by
selecting one of the available test modes (see
control register description). The test modes
apply various voltages to the differential input
depending on the setting in the control register.
digital I/O
The digital inputs and outputs of the THS1401/3/8
ADC are 3-V CMOS compatible. In order to avoid
current feed back errors, the capacitive load on
the digital outputs should be as low as possible (50
pF max). Series resistors (100
) on the digital
outputs can improve the performance by limiting
the current during output transitions.
The parallel interface of the THS1401/3/8 ADC
features 3-state buffers, making it possible to
directly connect it to a data bus. The output buffers
are enabled by driving the OE input low.
Refer to the read and write timing diagrams in the
parameter measurement information section for
information on read and write access.
相关PDF资料 |
PDF描述 |
|---|---|
| THS1403CPFB | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| THS1408CPFB | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| THS1408QPHP | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| THS1408MPHPEP | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| THS1403QPHPEP | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| THS1401-EP | 制造商:TI 制造商全称:Texas Instruments 功能描述:14-BIT, 1/3/8 MSPS DSP COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE AND PGA |
| THS1401EVM | 功能描述:数据转换 IC 开发工具 THS1401 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 |
| THS1401IPFB | 功能描述:模数转换器 - ADC 14-Bit 1/3/8 MSPS DSP-Compatible 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 |
| THS1401IPFBG4 | 功能描述:模数转换器 - ADC 14-Bit 1/3/8 MSPS DSP-Compatible 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 |
| THS1401PFB | 制造商:TI 制造商全称:Texas Instruments 功能描述:14-BIT, 1/3/8 MSPS DSP COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE AND PGA |
发布紧急采购，3分钟左右您将得到回复。