參數(shù)資料
型號： MX7847
廠商： Maxim Integrated Products, Inc.
英文描述： Complete, Dual, 12-Bit Multiplying DACs(完備的,雙路,12位乘法DAC ，電壓輸出，并行，具8位總線接口)
中文描述： 完備的、雙路、12位乘法DAC，帶有8位總線接口
文件頁數(shù)： 7/12頁
文件大小： 206K
代理商： MX7847
CS
,
WR
, A0, and A1 control data loading to the input
latches. The eight data inputs accept right-justified
data, which can be loaded to the input latches in any
sequence. If
LDAC
is held high, loading data to the
input latches will not change the analog output. A0
and A1 determine which input latch will receive the
data when
CS
and
WR
are low. Table 2 shows the
control logic truth table.
Table 2. MX7837 Truth Table
CS
WR
LDAC
A0
X
X
0
1
0
1
1
X = Don't Care
The
LDAC
input controls 12-bit data transfer from the
input latches to the DAC latches. When
LDAC
is taken
low, both DAC latches (thus, both analog outputs) are
updated simultaneously. When
LDAC
is low, the DAC
latches are transparent; DAC data is latched on the ris-
ing edge of
LDAC
. The
LDAC
input is asynchronous
and independent of
WR
. This is useful in many appli-
cations, especially in updating multiple MX7837s simul-
taneously. However, be careful when exercising
LDAC
during a write cycle; if an
LDAC
operation overlaps a
CS
and
WR
operation, invalid data may be latched to
the output. To avoid this,
LDAC
must remain low after
CS
or
WR
have returned high for a period equal to or
greater than t
8
, the minimum
LDAC
pulse width.
Unipolar Binary Operation
Figure 6 shows DAC A (MX7837/MX7847) connected
for unipolar binary operation. Similar connections
apply for DAC B. When V
IN
is an AC signal, the circuit
performs 2-quadrant multiplication. Table 3 shows the
code table for this circuit. On the MX7847, the R
FB
feedback resistor is internally connected to V
OUT
.
Table 3. Unipolar Code Table
DAC A
MS
INPUT
LATCH
DAC A LATCH
DAC A
LS
INPUT
LATCH
DAC B
MS
INPUT
LATCH
DAC B
LS
INPUT
LATCH
A1
A0
WR
CS
LDAC
DAC B LATCH
12
12
4
8
4
8
8
DB7 DB0
Figure 4. MX7837 Input Control Logic
DAC Latch Contents
MSB
LSB
×
V
IN
4095
4096
M
Complete, Dual, 12-Bit
Multiplying DACs
_______________________________________________________________________________________
7
Function
1
X
0
0
0
0
X
1
0
0
0
0
1
1
1
1
1
1
No Data Transfer
No Data Transfer
DAC A LS Input Latch Transparent
DAC A MS Input Latch Transparent
DAC B LS Input Latch Transparent
DAC B MS Input Latch Transparent
Updated Simultaneously from
the Respective Input Latches
1
1
0
X
A1
X
X
0
0
1
X
ADDRESS VALID
VALID DATA
t
6
t
7
t
1
t
2
t
5
t
3
t
4
A0/A1
CS
WR
DATA
LDAC
t
8
Figure 5. MX7837 Write-Cycle Timing Diagram
Note : 1LSB
V
4096
IN
=
Analog Output, V
OUT
1111 1111 1111
1000 0000 0000
×
=
V
1
IN
IN
2048
4096
0000 0000 0001
×
V
IN
1
4096
0000 0000 0000
0V
相關PDF資料
PDF描述
MXB7846 H-BRIDGE PWR MOSFET CONTROLLER
MXB7846EEE MOSFET Driver IC; Package/Case:28-TSSOP; Fall Time, tf:70ns; High Side MOSFET Drive Type:On-Chip Charge Pump; Leaded Process Compatible:Yes; Load Capacitance:3300pF; Load Voltage Max:40V; MOSFET Driver Type:Quad Drivers, Full Bridge RoHS Compliant: Yes
MXB7846EUE 2.375V to 5.25V, 4-Wire Touch-Screen Controller with Internal Reference and Temperature Sensor
MXD1005PA__ 5-Tap Silicon Delay Line
MXD1005PD__ 5-Tap Silicon Delay Line
相關代理商/技術參數(shù)
參數(shù)描述
MX7847AN 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
MX7847AN+ 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
MX7847AQ 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
MX7847AR 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
MX7847AR+ 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
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*