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| 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： | 7/28页 |
| 文件大小： | 625K |
| 代理商： | THS1401CPFB |
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THS1401
THS1403
THS1408
SLAS248D DECEMBER 1999 REVISED SEPTEMBER 2005
www.ti.com
15
PRINCIPLES OF OPERATION
registers
The device contains several registers. The A register is selected by the values of bits A1 and A0:
A1
A0
Register
0
Conversion result
0
1
PGA
1
0
Offset
1
Control
Tables 1 and 2 describe how to read the conversion results and how to configure the data converter. The default
values (were applicable) show the state after a power-on reset.
Table 1. Conversion Result Register, Address 0, Read
BIT
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Function
MSB
...
…
LSB
The output can be configured for 2s complement or straight binary format (see D11/control register).
The output code is given by:
2s complement:
Straight binary:
8192 at
IN = REF
0
at
IN = REF
0
at
IN = 0
8192
at
IN = 0
8191
IN = +REF 1 LSB
16383 at
IN = + REF 1 LSB
1LSB
+ 2DREF
16384
Table 2. PGA Gain Register, Address 1, Read/Write
BIT
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Function
X
G2
G1
G0
Default
0
The PGA gain is determined by writing to G20.
Gain (dB) = 1dB
× G20. max = 7dB. The range of G20 is 0 to 7.
Table 3. Offset Register, Address 2, Read/Write
BIT
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Function
X
MSB
…
LSB
Default
0
The offset correction range is from –128 to 127 LSB. This value is added to the conversion results from the ADC.
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相关代理商/技术参数 |
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| 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 |
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