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參數(shù)資料
| 型號： | MAX5812 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 12-Bit Low-Power, 2-Wire, Serial Voltage-Output DAC |
| 中文描述： | 12位、低功耗、２線、串行電壓輸出DAC |
| 文件頁數(shù)： | 8/13頁 |
| 文件大?。?/td> | 268K |
| 代理商： | MAX5812 |
M
12-Bit Low-Power, 2-Wire, Serial
Voltage-Output DAC
8
_______________________________________________________________________________________
and a serial clock line (SCL). The MAX5812 is SMBus
compatible within the range of V
DD
= 2.7V to 3.6V. SDA
and SCL facilitate bidirectional communication between
the MAX5812 and the master at rates up to 400kHz.
Figure 1 shows the 2-wire interface timing diagram. The
MAX5812 is a transmit/receive slave-only device, rely-
ing upon a master to generate a clock signal. The mas-
ter, typically a microcontroller, initiates data transfer on
the bus and generates SCL to permit that transfer.
A master device communicates to the MAX5812 by
transmitting the proper address followed by command
and/or data words. Each transmit sequence is framed
by a START (S) or REPEATED START (S
r
) condition and
a STOP (P) condition. Each word transmitted over the
bus is 8 bits long and is always followed by an
acknowledge clock pulse.
The MAX5812 SDA and SCL drivers are open-drain out-
puts, requiring a pullup resistor (500
or greater) to
generate a logic high voltage (see the
Typical Operating
Circuit
). Series resistors R
S
are optional. These series
resistors protect the input stages of the MAX5812 from
high-voltage spikes on the bus lines and minimize
crosstalk and undershoot of the bus signals.
Bit Transfer
One data bit is transferred during each SCL clock
cycle. The data on SDA must remain stable during the
high period of the SCL clock pulse. Changes in SDA
while the SCL is high are control signals (see the
START and STOP Conditions
section). SDA and SCL
idle high when the I
2
C bus is not busy.
START and STOP Conditions
When the serial interface is inactive, SDA and SCL idle
high. A master device initiates communication by issu-
ing a START condition. A START condition is a high-to-
Figure 1. Two-Wire Serial lnterface Timing Diagram
SCL
SDA
STOP
CONDITION
START
CONDITION
REPEATED START CONDITION
START CONDITION
t
LOW
t
SU, DAT
t
SU, STA
t
SP
t
BUF
t
HD, STA
t
SU, STO
t
R
tF
t
HD, STA
t
HIGH
t
HD, DAT
SCL
SDA
S
Sr
P
Figure 2. START/STOP Conditions
Figure 3. Early STOP condition
SCL
SDA
STOP
START
SCL
SDA
ILLEGAL
STOP
START
ILLEGAL EARLY STOP CONDITION
LEGAL STOP CONDITION
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| MAX5812LEUT | 12-Bit Low-Power, 2-Wire, Serial Voltage-Output DAC |
| MAX5812MEUT | 12-Bit Low-Power, 2-Wire, Serial Voltage-Output DAC |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5812LEUT | 制造商:Maxim Integrated Products 功能描述:12-BIT LOW-POWER 2-WIRE SERIAL V - Rail/Tube |
| MAX5812LEUT+ | 制造商:Maxim Integrated Products 功能描述:12-BIT LOW-POWER, 2-WIRE, SERIAL VOLTAGE-OUTPUT DAC - Rail/Tube |
| MAX5812LEUT+T | 功能描述:數(shù)模轉換器- DAC 12-Bit Precision DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率: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 |
| MAX5812LEUT-G035 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX5812LEUT-T | 功能描述:數(shù)模轉換器- DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率: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 |
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