參數(shù)資料
型號(hào): EVAL-AD5791SDZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 19/29頁(yè)
文件大?。?/td> 0K
描述: BOARD EVAL FOR AD5791
標(biāo)準(zhǔn)包裝: 1
DAC 的數(shù)量: 1
位數(shù): 20
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
設(shè)置時(shí)間: 1µs
DAC 型: 電壓
工作溫度: -40°C ~ 125°C
已供物品: 板,CD
已用 IC / 零件: AD5791
Data Sheet
AD5791
Rev. D | Page 25 of 28
Gain of Two Configuration
Figure 52 shows an output amplifier configured for a gain of
two. The gain is set by the internal matched 6.8 kΩ resistors,
which are exactly twice the DAC resistance, having the effect of
removing an offset from the input bias current of the external
amplifier. In this configuration, the output spans from 2 ×
VREFN VREFP to VREFP. This configuration is used to generate a
bipolar output span from a single ended reference input with
VREFN = 0 V. For this mode of operation, the RBUF bit of the
control register must be cleared to Logic 0.
A1
6.8k 6.8k
R1
RFB
20-BIT
DAC
VREFPS
VREFPF
VREFP
VREFN = 0V
VREFNS
AD5791
1/2 AD8676
VREFNF
RFB
INV
VOUT
08
96
4-
05
3
10pF
AD8675,
ADA4898-1
VOUT
Figure 52. Output Amplifier in Gain of Two Configuration
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