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參數(shù)資料
| 型號(hào)： | MAX534ACEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | +5V, Low-Power, 8-Bit Quad DAC with Rail-to-Rail Output Buffers |
| 中文描述： | SERIAL INPUT LOADING, 8 us SETTLING TIME, 8-BIT DAC, PDSO16 |
| 封裝： | QSOP-16 |
| 文件頁(yè)數(shù)： | 11/16頁(yè) |
| 文件大?。?/td> | 125K |
| 代理商： | MAX534ACEE |
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M
+5V, Low-Power, 8-Bit Quad DAC
with Rail-to-Rail Output Buffers
______________________________________________________________________________________
11
Interfacing to the Microprocessor
The MAX534 is Microwire and SPI/QSPI compati-
ble (Figures 4 and 5). For SPI and QSPI, clear the
CPOL and CPHA configuration bits (CPOL = CPHA =
0). The SPI/QSPI CPOL = CPHA = 1 configuration can
also be used if the DOUT output is ignored.
The MAX534 can interface with Intel’s 80C5X/80C3X
family in mode 0 if the SCLK clock polarity is inverted.
More universally, if a serial port is not available, three
lines from one of the parallel ports can be used for bit
manipulation.
Digital feedthrough at the voltage outputs is greatly
minimized by operating the serial clock only to update
the registers. The clock idle state is low.
Daisy-Chaining Devices
Any number of MAX534s can be daisy-chained by con-
necting DOUT of one device to DIN of the following
device in the chain. The NOP instruction (Table 1)
allows data to be passed from DIN to DOUT without
changing the input or DAC registers of the passing
device. A 3-wire interface updates daisy-chained or
individual MAX534s simultaneously by bringing
CS
high (Figure 6).
Analog S ec tion
DAC Operation
The MAX534 uses a matrix decoding architecture for
the DACs, which saves power in the overall system.
The external reference voltage is divided down by a
resistor string placed in a matrix fashion. Row and col-
umn decoders select the appropriate tab from the
resistor string to provide the needed analog voltages.
The resistor string presents a code-independent input
impedance to the reference and guarantees a mono-
tonic output. Figure 8 shows a simplified diagram of the
four DACs.
Reference Input
The voltage at REF sets the full-scale output voltage for
all four DACs. The 460k
typical input impedance at
REF is code independent. The output voltage for any
DAC can be represented by a digitally programmable
voltage source as follows:
V
OUT
= (NB x V
REF
) / 256
where NB is the numerical value of the DAC’s binary
input code.
SCLK
DIN
DEVICE A
DEVICE B
DEVICE C
CS
MAX534
SCLK
DIN
CS
MAX534
SCLK
DIN
CS
MAX534
SCLK
DIN
CS
MAX534
DOUT
DOUT
DOUT
SCLK
DIN
CS
SCLK
DIN
CS
TOOTHER
SERIAL DEVICES
Figure 6. Daisy-chained or individual MAX534s are simultaneously updated by bringing
CS
high. Only three wires are required.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX534ACEE+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-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(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 |
| MAX534ACEE+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-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(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 |
| MAX534ACEE-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 |
| MAX534ACPE | 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 |
| MAX534ACPE+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-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(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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