參數(shù)資料
型號(hào)： MX7847JN+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 11/12頁(yè)
文件大小： 0K
描述： IC DAC 12BIT DL MULT 24-DIP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 15
設(shè)置時(shí)間： 4µs
位數(shù)： 12
數(shù)據(jù)接口： 并聯(lián)
轉(zhuǎn)換器數(shù)目： 2
電壓電源： 雙 ±
功率耗散（最大）： 1.07W
工作溫度： 0°C ~ 70°C
安裝類型： 通孔
封裝/外殼： 24-DIP（0.300"，7.62mm）
供應(yīng)商設(shè)備封裝： 24-PDIP
包裝： 管件
輸出數(shù)目和類型： 2 電壓，單極；2 電壓，雙極
采樣率（每秒）： *
產(chǎn)品目錄頁(yè)面： 1398 (CN2011-ZH PDF)
MX7837/MX7847
Bipolar Operation (4-Quadrant
Multiplication)
Figure 7 shows the MX7837/MX7847 connected for
binary operation. The offset-binary coding is shown in
Table 4. When VIN is an AC signal, the circuit performs
4-quadrant multiplication. R1, R2, and R3 resistors
should be 0.01% ratio matched to maintain gain-error
specifications. On the MX7847, the RFB feedback
resistor is internally connected to VOUT.
Table 4. Bipolar Code Table
__________Applications Information
Ground Management
The use of an uninterrupted ground plane is strongly
recommended. AC or transient voltages between ana-
log and digital grounds (between AGNDA/AGNDB and
DGND) can inject noise into the analog circuitry.
Connect the MX7837/MX7847 AGNDs and DGND
directly to the ground plane or to a star ground to
ensure that they are at the same potential. In complex
systems with separate analog and digital ground
planes, connect two diodes (1N914 or equivalent) in
inverse parallel between the AGND and DGND pins.
Power-Supply Decoupling
To minimize noise, decouple the VDD and VSS lines to
DGND using a 10F capacitor in parallel with a 0.1F
ceramic capacitor. Minimize capacitor lead lengths for
best noise rejection.
Operation with Reduced
Power-Supply Voltages
The MX7837/MX7847 are specified for operation with
VDD/VSS = ±11.4V to ±16.5V. However, the output
amplifier requires 2.5V of headroom, so the reference
input should not come within 2.5V of VDD/VSS in order to
maintain accuracy at full scale.
Complete, Dual, 12-Bit
Multiplying DACs
8
_______________________________________________________________________________________
DAC A
AGNDA VSS
DGND
RFBA*
VOUTA*
VOUT
VIN
VDD
VREFA
VDD
MX7837
MX7847
* INTERNALLY CONNECTED ON MX7847
VSS
DAC A
AGNDA
VSS
DGND
RFBA*
VOUTA
VIN
VDD
VREFA
MX7837
MX7847
VOUT
R1
20k
R2
20k
R3
10k
MAX427
VDD
VSS
* INTERNALLY CONNECTED
ON MX7847
DAC Latch Contents
MSB
LSB
Analog Output, VOUT
1111 1111 1111
+×
V
2047
2048
IN
1000 0000 0001
+×
V
1
2048
IN
0111 1111 1111
×
V
1
2048
IN
0000 0000 0000
×
=
V
2048
V
IN
1000 0000 0000
0V
Note : 1LSB
V
2048
IN
=
Figure 6. Unipolar Binary Operation
Figure 7. Bipolar Offset Binary Operation
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MX7847JR 功能描述:數(shù)模轉(zhuǎn)換器- 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
MX7847JR+ 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 12Ch Precision ADC 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
MX7847JR+T 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 12Ch Precision ADC 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
MX7847JR-T 功能描述:數(shù)模轉(zhuǎn)換器- 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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