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| 型號(hào)： | THS1401IPFBG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| 封裝： | GREEN, PLASTIC, TQFP-48 |
| 文件頁(yè)數(shù)： | 8/28頁(yè) |
| 文件大?。?/td> | 625K |
| 代理商： | THS1401IPFBG4 |
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THS1401
THS1403
THS1408
SLAS248D DECEMBER 1999 REVISED SEPTEMBER 2005
www.ti.com
16
PRINCIPLES OF OPERATION
Table 4. Control Register, Address 3, Read
BIT
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Function
PWD
REF
FOR
TM2
TM1
TM0
OFF
RES
Table 5. Control Register, Address 3, Write
BIT
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Function
PWD
REF
FOR
TM2
TM1
TM0
OFF
RES
Default
0
PWD:
Power down
0 = normal operation
1 = power down
REF:
Reference select
0 = internal reference
1 = external reference
FOR:
Output format
0 = straight binary
1 = 2s complement
TM20:
Test mode
000 = normal operation
001 = both inputs = REF
010 = IN+ at VCM (Voltage at CML pin), IN at REF
011 = IN+ at REF+, IN at REF
100 = normal operation
101 = both inputs = REF+
110 = IN+ at REF, IN at VCM (Voltage at CML pin)
111 = IN+ at REF, IN at REF+
OF:
Offset correction
0 = enable
1 = disable
RES
Reserved
Must be set to 0.
APPLICATION INFORMATION
driving the analog input
The THS1401/3/8 ADCs have a fully differential input. A differential input is advantageous with respect to SNR,
SFDR, and THD performance because the signal peak-to-peak level is 50% of a comparable single-ended
input.
There are three basic input configurations:
D Fully differential
D Transformer coupled single-ended to differential
D Single-ended
fully differential configuration
In this configuration, the ADC converts the difference (
IN) of the two input signals on IN+ and IN.
100 pF
IN+
IN
THS1401/3/8
22
100 pF
22
Figure 19. Differential Input
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參數(shù)描述 |
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| THS1401PFB | 制造商:TI 制造商全稱: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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| THS1401QPHPEP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Mil Enhanc 14B 1/3/8 MSPS DSP Comp ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| THS1403 | 制造商:TI 制造商全稱: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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