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參數(shù)資料
| 型號： | THS5651PW |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 10-BIT, 100 MSPS, CommsDACE DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 10位，100 MSPS的，CommsDACE數(shù)字模擬轉換器 |
| 文件頁數(shù)： | 15/28頁 |
| 文件大?。?/td> | 702K |
| 代理商： | THS5651PW |
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THS5651
10-BIT, 100 MSPS, CommsDAC
DIGITAL-TO-ANALOG CONVERTER
SLAS197A – JUNE 1999
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
DAC transfer function
The THS5651 delivers complementary output currents IOUT1 and IOUT2. Output current IOUT1 equals the
approximate full-scale output current when all input bits are set high in mode 0 (straight binary input), i.e. the
binary input word has the decimal representation 1023. For mode 1, the MSB is inverted (twos complement input
format). Full-scale output current will flow through terminal IOUT2 when all input bits are set low (mode 0,
straight binary input). The relation between IOUT1 and IOUT2 can thus be expressed as:
IOUT1
IOUT
FS
IOUT2
where IOUT
FS
is the full-scale output current. The output currents can be expressed as:
CODE
1024
IOUT1
IOUT
FS
IOUT2
IOUT
FS
(1023
CODE)
1024
where CODE is the decimal representation of the DAC data input word. Output currents IOUT1 and IOUT2 drive
resistor loads R
LOAD
or a transformer with equivalent input load resistance R
LOAD
. This would translate into
single-ended voltages VOUT1 and VOUT2 at terminal IOUT1 and IOUT2, respectively, of:
VOUT1
IOUT1
R
LOAD
CODE
1024
IOUT
FS
R
LOAD
VOUT2
IOUT2
R
LOAD
(1023–CODE)
1024
IOUT
FS
R
LOAD
The differential output voltage VOUT
DIFF
can thus be expressed as:
VOUT
DIFF
VOUT1–VOUT2
(2CODE–1023)
1024
IOUT
FS
R
LOAD
The latter equation shows that applying the differential output will result in doubling of the signal power delivered
to the load. Since the output currents of IOUT1 and IOUT2 are complementary, they become additive when
processed differentially. Care should be taken not to exceed the compliance voltages at node IOUT1 and
IOUT2, which would lead to increased signal distortion.
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|---|---|
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| THS5661AIDW | 功能描述:數(shù)模轉換器- DAC 12-Bit 125 MSPS CommsDAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| THS5661AIDW | 制造商:Texas Instruments 功能描述:IC 12BIT DAC 125MSPS SMD 制造商:Texas Instruments 功能描述:IC, 12BIT DAC, 125MSPS, SMD |
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