參數(shù)資料
型號(hào)： THS5671APW
廠商： Texas Instruments, Inc.
英文描述： 14-BIT, 125 MSPS, CommsDAC DIGITAL-TO-ANALOG CONVERTER
中文描述： 14位，125 MSPS的，CommsDAC數(shù)字模擬轉(zhuǎn)換器
文件頁(yè)數(shù)： 17/31頁(yè)
文件大?。?/td> 825K
代理商： THS5671APW
THS5671A
14-BIT 125 MSPS, CommsDAC
DIGITAL-TO-ANALOG CONVERTER
SLAS201A
–
DECEMBER 1999
–
REVISED SEPTEMBER 2002
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
DAC transfer function
The THS5671A 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 16383. 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
16384
IOUT1
IOUT
FS
IOUT2
IOUT
FS
(16383
CODE)
16384
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
16384
IOUT
FS
R
LOAD
VOUT2
IOUT2
R
LOAD
(16383
–
CODE)
16384
IOUT
FS
R
LOAD
The differential output voltage VOUT
DIFF
can thus be expressed as:
VOUT
DIFF
VOUT1
–
VOUT2
(2CODE
–
16383)
16384
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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
THS5671EVM 功能描述:放大器 IC 開(kāi)發(fā)工具 THS5671 Eval Mod RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
THS6 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS
THS6002 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL DIFFERENTIAL LINE DRIVERS AND RECEIVERS
THS6002C 制造商:TI 功能描述:IC, SMT
THS6002CDWP 功能描述:緩沖器和線路驅(qū)動(dòng)器 Dual Diff/Receiver Line Driver RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
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