參數(shù)資料
型號(hào)： MAX5822
廠商： Maxim Integrated Products, Inc.
英文描述： Dual D-type Positive-Edge-Triggered Flip-Flops With Preset And C 14-CFP -55 to 125
中文描述： 雙路、12位、低功耗、２線、串行電壓輸出DAC
文件頁(yè)數(shù)： 10/13頁(yè)
文件大?。?/td> 287K
代理商： MAX5822
M
(Figure 7). Setting bits A or B to 1 sets that DAC to the
selected power-down mode based on the states of PD0
and PD1 (Table 1). Any combination of the DACs can
be controlled with a single write sequence.
Read Data Format
In read mode (R/
W
= 1), the MAX5822 writes the con-
tents of the DAC register to the bus. The direction of
data flow reverses following the address acknowledge
by the MAX5822. The device transmits the first byte of
data, waits for the master to acknowledge, then trans-
mits the second byte. Figure 8 shows an example-read
data sequence.
I
2
C Compatibility
The MAX5822 is compatible with existing I
2
C systems.
SCL and SDA are high-impedance inputs; SDA has an
open drain that pulls the data line low during the ninth
clock pulse. The
Typical Operating Circuit
shows a typi-
cal I
2
C application. The communication protocol sup-
ports the standard I
2
C 8-bit communications. The
general call address is ignored. The MAX5822 address
is compatible with the 7-bit I
2
C addressing protocol
only. No 10-bit address formats are supported.
Digital Feedthrough Suppression
When the MAX5822 detects an address mismatch, the
serial interface disconnects the SCL signal from the
core circuitry. This minimizes digital feedthrough
caused by the SCL signal on a static output. The serial
interface reconnects the SCL signal once a valid
START condition is detected.
Applications Information
Digital Inputs and Interface Logic
The MAX5822 2-wire digital interface is I
2
C/SMBus
compatible. The two digital inputs (SCL and SDA) load
the digital input serially into the DAC. Schmitt-trigger
buffered inputs allow slow-transition interfaces, such as
optocouplers to interface directly to the device. The
digital inputs are compatible with CMOS logic levels.
Power-Supply Bypassing and
Ground Management
Careful PC board layout is important for optimal system
performance. Keep analog and digital signals separate
to reduce noise injection and digital feedthrough. Use a
ground plane to ensure that the ground return from
GND to the power-supply ground is short and low
impedance. Bypass V
DD
with a 0.1μF capacitor to
ground as close to the device as possible.
Dual, 12-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
10
______________________________________________________________________________________
S
MSB
MSB
A6
A5
A4
A3
A2
A1
A0
C3
C2
C1
C0
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
P
ACK
ACK
ACK
LSB
MSB
LSB
EXAMPLE-WRITE DATA SEQUENCE
EXAMPLE-WRITE TO POWER-DOWN REGISTER SEQUENCE
LSB
S
MSB
MSB
A6
A5
A4
A3
A2
A1
A0
C3
C2
C1
C0
D11
D10
D9
D8
X
X
X
X
B
A
PD1
PD0
P
ACK
ACK
ACK
LSB
MSB
LSB
LSB
R/W
R/W
Figure 6. Example Write-Command Sequences
X
X
X
X
B
A
PD1
PD0
Figure 7. Extended Command Byte Format
相關(guān)PDF資料
PDF描述
MAX5822LEUA Dual, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC
MAX5841MEUB Quad, 10-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC
MAX5841 4-Bit Magnitude Comparators 20-LCCC -55 to 125
MAX5841LEUB Quad, 10-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC
MAX5842MEUB Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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MAX5822LEUA+ 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 2Ch Precision 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
MAX5822LEUA+T 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 2Ch Precision 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
MAX5822LEUA-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
MAX5822MEUA 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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