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參數(shù)資料
| 型號： | MAX5251AEAP |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | CCTV PASS THROUGH |
| 中文描述： | QUAD, SERIAL INPUT LOADING, 12 us SETTLING TIME, 10-BIT DAC, PDSO20 |
| 封裝： | SSOP-20 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 146K |
| 代理商： | MAX5251AEAP |
M
+3V, Quad, 10-Bit Voltage-Output DAC
with S erial Interfac e
_______________________________________________________________________________________
9
In shutdown mode, the MAX5251 output amplifiers and
the reference inputs enter a high-impedance state. The
serial interface remains active. Data in the input regis-
ters is retained in shutdown, allowing the MAX5251 to
recall the output states prior to entering shutdown. Exit
shutdown mode either by recalling the previous config-
uration or by updating the DACs with new data. When
powering up the device or bringing it out of shutdown,
allow 20μs for the outputs to stabilize.
S erial-Interfac e Configurations
The MAX5251’s 3-wire serial interface is compatible
with both Microwire (Figure 2) and SPI /QSPI
(Figure 3). The serial input word consists of two address
bits and two control bits followed by 10+2 data bits
(MSB first), as shown in Figure 4. The 4-bit address/
control code determines the MAX5251’s response out-
lined in Table 1. The connection between DOUT and
the serial-interface port is not necessary, but may be
used for data echo. Data held in the MAX5251’s shift
register can be shifted out of DOUT and returned to the
microprocessor (μP) for data verification.
The MAX5251’s digital inputs are double buffered.
Depending on the command issued through the serial
interface, the input register(s) can be loaded without
affecting the DAC register(s), the DAC register(s) can
be loaded directly, or all four DAC registers can be
updated simultaneously from the input registers
(Table 1).
S erial-Interfac e Desc ription
The MAX5251 requires 16 bits of serial data. Table 1
lists the serial-interface programming commands. For
certain commands, the 10+2 data bits are “don’t
cares.” Data is sent MSB first and can be sent in two
8-bit packets or one 16-bit word (
CS
must remain low
until 16 bits are transferred). The serial data is com-
posed of two DAC address bits (A1, A0) and two con-
trol bits (C1, C0), followed by the 10+2 data bits
D9…D0, S1, S0 (Figure 4). Set both sub-bits (S0, S1) to
zero. The 4-bit address/control code determines:
The register(s) to be updated
The clock edge on which data is to be clocked out
via the serial-data output (DOUT)
The state of the user-programmable logic output
(UPO)
If the part is to go into shutdown mode (assuming
PDL
is high)
How the part is configured when exiting shutdown
mode.
SCLK
DIN
DOUT*
CS
SK
SO
SI*
I/O
MAX5251
MICROWIRE
PORT
*THE DOUT-SI CONNECTION IS NOT REQUIRED FOR WRITING TOTHE MAX5251,
BUT MAY BE USED FOR READBACK PURPOSES.
Figure 2. Connections for Microwire
DOUT*
DIN
SCLK
CS
MISO*
MOSI
SCK
I/O
SPI/QSPI
PORT
SS
+3.3V
CPOL = 0,CPHA = 0
*THE DOUT-MISOCONNECTION IS NOT REQUIRED FOR WRITING TOTHE MAX5251,
BUT MAY BE USED FOR READBACK PURPOSES.
MAX5251
Figure 3. Connections for SPI/QSPI
Figure 4. Serial-Data Format
MSB ..................................................................................LSB
16 Bits of Serial Data
Address
Bits
Control
Bits
Data Bits
MSB.................................LSB
A1 A0
C1 C0
D9 ...................................D0 S1 S0
10+2 Data Bits
4 Address/
Control Bits
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PDF描述 |
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| MAX5251 | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| MAX5251ACAP | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface |
| MAX5251ACPP | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| MAX5251AEPP | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| MAX5251BCAP | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5251AEAP+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 10-Bit 4Ch 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 |
| MAX5251AEAP+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 10-Bit 4Ch 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 |
| MAX5251AEAP-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 |
| MAX5251AEPP | 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5251AEPP+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 10-Bit 4Ch 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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