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參數(shù)資料
| 型號(hào)： | MAX5547 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual, 10-Bit, Current-Sink Output DAC |
| 中文描述： | 雙路、10位、電流輸出DAC |
| 文件頁(yè)數(shù)： | 9/12頁(yè) |
| 文件大小： | 807K |
| 代理商： | MAX5547 |
Set
CS
low to begin clocking input data at DIN on the
falling edge of SCLK (see Figure 1). Serial communica-
tions to the shift register consist of a 16-bit command
word loaded from DIN. The first four control bits
(C3–C0) determine the target register (see Table 1).
The next 10 data bits set the current-sink level. D9 is
the MSB and D0 the LSB. Set bits S1 and S0 to zero for
proper operation. Data is latched into the appropriate
DAC register on the 16th SCLK falling edge. After writ-
ing 16 bits, drive
CS
high. Keep
CS
low throughout the
entire 16-bit word.
Write the command word to configure DAC registers A
and B individually or both registers at the same time.
The command word also determines whether the DACs
use the internal or external reference.
The MAX5547 powers up in external reference mode with
DAC registers A and B set to I
FS
= 1.2mA at code 000h.
Applications Information
Power Sequencing
Ensure the voltages applied at REF, OUTA, and OUTB
do not exceed V
DD
at any time. If proper power
sequencing is not possible, connect an external
Schottky diode between REF/OUTA/OUTB and V
DD
to
ensure compliance with the absolute maximum ratings.
Power-Supply Bypassing and Ground
Management
Digital or AC transient signals on GND create noise at
the analog output. Return GND to the highest quality
ground plane available. For extremely noisy environ-
ments, bypass both REF and V
DD
to GND with 10μF
and 0.1μF capacitors in parallel, with the 0.1μF capaci-
tor as close to the device as possible. Careful PC
board ground layout minimizes crosstalk between the
DAC outputs and digital inputs.
M
Dual, 10-Bit, Current-Sink Output DAC
_______________________________________________________________________________________
9
CS
SCLK
t
CSS
t
DS
t
DH
t
CL
t
CH
C3
C2
S1
S0
t
CP
t
CSH
t
CSW
DIN
Figure 1. SPI Serial-Interface Timing Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5547ETA | 制造商:Maxim Integrated Products 功能描述:DUAL 10-BIT CURRENT-SINK OUTPUT D - Rail/Tube |
| MAX5547ETA+ | 制造商:Maxim Integrated Products 功能描述:DAC 2CH CURRENT STEERING 10-BIT 8TDFN EP - Rail/Tube |
| MAX5547ETA+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 10-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 |
| MAX5547ETA-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 |
| MAX5548ETE | 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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