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參數(shù)資料
| 型號(hào)： | MAX5380MEUK |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | Low-Cost, Low-Power, 8-Bit DACs with 2-Wire Serial Interface in SOT23 |
| 中文描述： | SERIAL INPUT LOADING, 20 us SETTLING TIME, 8-BIT DAC, PDSO5 |
| 封裝： | MINIATURE, SOT-23, 5 PIN |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 325K |
| 代理商： | MAX5380MEUK |
M
device, followed by the MAX5380/MAX5381/MAX5382s’
preset slave address, a power-mode bit, the DAC data,
and finally, a STOP condition (Figure 6). The bus is then
free for another transmission.
SDA’s state is sampled and therefore must remain sta-
ble while SCL is high. Data is transmitted in 8-bit bytes.
Nine clock cycles are required to transfer each byte to
the MAX5380/MAX5381/MAX5382. Release SDA during
the 9th clock cycle since the selected device acknowl-
edges receipt of the byte by pulling SDA low during
this time. A series resistor on the SDA line may be
needed if the master’s output is forced high while the
selected device acknowledges (Figure 4).
Slave Address
The MAX5380/MAX5381/MAX5382 are available with
one of four preset slave addresses. Each address
option is identified by the suffix L, M, N, or P added to
the part number. The address is defined as the 7MSBs
sent by the master after a START condition. The
address options are 0x60, 0x62, 0x64, 0x66 (left justi-
fied with LSB set to 0). The 8th bit, typically used to
define a write or read protocol, sets the device’s power
mode (SHDN). The device is powered-down when
SHDN is set to one. During a device search routine, the
MAX5380/MAX5381/MAX5382 acknowledge both
options (SHDN = 0 or SHDN = 1), but do not change
their power state if a stop condition (or restart) is issued
immediately. The second byte (DAC data) must be
sent/received for the device to update both power
mode and DAC output.
DAC Data
The 8-bit DAC data is decoded as straight binary MSB
first with 1LSB = V
REF
/ 256 and converted into the cor-
responding analog voltage as shown in Table 1. After
receiving the data byte, the devices acknowledge its
receipt and expect a STOP condition, at which point
the DAC output is updated.
The MAX5380/MAX5381/MAX5382 update the output
and the power mode only if the second byte is clocked
in (SHDN = 0) or out (SHDN = 1) of the device. When
SHDN = 1, the master will read all ones when clocking
out a data byte. The MAX5380/MAX5381/MAX5382 do
not drive SDA except for the acknowledge bit.
I
2
C Compatibility
The MAX5380/MAX5381/MAX5382 are compatible with
existing I
2
C systems. SCL and SDA are high-imped-
ance inputs; SDA has an open drain that pulls the data
line low during the 9th clock pulse. Figure 7 shows a
typical I
2
C application. The communication protocol
supports standard I
2
C 8-bit communications. The gen-
eral call address is ignored, and CBUS formats are not
supported. The devices’ address is compatible with the
7-bit I2C addressing protocol only. No 10-bit formats
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
10
______________________________________________________________________________________
*SEE ORDERING INFORMATION.
SDA
START
CONDITION
STOP
CONDITION
9
8
10
18
1
17
ACK
LSB
MSB
LSB
MSB
0
1
1
0
A
1
0
A
2
ACK
SHDN
D7
D5
D6
D4
D2
D3
D1
D0
SLAVE ADDRESS BYTE
DAC CODE
*
L
M
N
P
A
1
A
2
0
0
1
1
0
1
0
1
Figure 6. A Complete Serial Transmission
SCL
SDA
START CONDITION
STOP CONDITION
Figure 5. START and STOP Conditions
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX5380PEUK | Low-Cost, Low-Power, 8-Bit DACs with 2-Wire Serial Interface in SOT23 |
| MAX5381PEUK | Low-Cost, Low-Power, 8-Bit DACs with 2-Wire Serial Interface in SOT23 |
| MAX5382PEUK | Low-Cost, Low-Power, 8-Bit DACs with 2-Wire Serial Interface in SOT23 |
| MAX5381MEUK | Low-Cost, Low-Power, 8-Bit DACs with 2-Wire Serial Interface in SOT23 |
| MAX5382MEUK | Low-Cost, Low-Power, 8-Bit DACs with 2-Wire Serial Interface in SOT23 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5380MEUK+ | 制造商:Maxim Integrated Products 功能描述:DAC SGL CURRENT STEERING 8BIT 5PIN SOT-23 - Rail/Tube |
| MAX5380MEUK+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 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 |
| MAX5380MEUK-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 |
| MAX5380NEUK | 制造商:Maxim Integrated Products 功能描述:LOW-COST LOW-POWER 8-BIT DACS WITH 2-WIRE SERIAL INTERFACE I - Rail/Tube |
| MAX5380NEUK+ | 制造商:Maxim Integrated Products 功能描述:DAC SGL CURRENT STEERING 8BIT 5PIN SOT-23 - Cut Tape Product |
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