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參數(shù)資料
| 型號(hào)： | DAC7642VFBR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 16-Bit, Dual Voltage Output DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 16位，雙電壓輸出數(shù)字模擬轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 12/20頁(yè) |
| 文件大小： | 770K |
| 代理商： | DAC7642VFBR |
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DAC7642, DAC7643
SBAS233
12
www.ti.com
THEORY OF OPERATION
The DAC7642 and DAC7643 are dual channel, voltage
output, 16-bit DACs. The architecture is an R-2R ladder
configuration with the three MSB
’
s segmented followed by an
operational amplifier that serves as a buffer. Each DAC has
its own R-2R ladder network, segmented MSBs, and output
op amp, as shown in Figure 1. The minimum voltage output
(zero-scale) and maximum voltage output (full-scale) are set
by the external voltage references V
REF
L and V
REF
H, respec-
tively. The digital input is a 16-bit parallel word and the DAC
input registers offer a readback capability. The converters
can be powered from either a single +5V supply or a dual
±
5V supply. Each device offers a reset function which imme-
diately sets all DAC output voltages, DAC registers and Input
registers to mid-scale, code 8000
H
(DAC7642), or to zero-
scale, code 0000
H
(DAC7643). See Figures 2 and 3 for the
basic configurations of the DAC7642 and DAC7643.
FIGURE 1. DAC7642 and DAC7643 Architecture.
R
2R
2R
2R
2R
2R
2R
2R
2R
2R
V
REF
H
V
OUT
V
OUT
Sense
V
REF
H Sense
V
REF
L
V
REF
L Sense
R
F
TYPICAL CHARACTERISTICS: V
SS
=
–
5V
(Cont.)
At T
A
= +25
°
C, V
CC
= +5V, V
SS
=
–
5V, V
REF
H
= +2.5V, V
REF
L
=
–
2.5V, representative unit, unless otherwise specified.
Time (1
μ
s/div)
OUTPUT VOLTAGE
vs MIDSCALE GLITCH PERFORMANCE
O
+5V
LDAC
0
7FFF
H
to 8000
H
Time (1
μ
s/div)
OUTPUT VOLTAGE
vs MIDSCALE GLITCH PERFORMANCE
O
+5V
LDAC
0
8000
H
to 7FFF
H
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DAC7642VFBRG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 16-Bit Dual Voltage Output DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| DAC7642VFBT | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 16-Bit Dual Voltage Output DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| DAC7642VFBTG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 16-Bit Dual Voltage Output DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| DAC7642VFR | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 16-Bit Dual Voltage Output DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| DAC7642VFRG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 16-Bit Dual Voltage Output DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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