參數(shù)資料
型號(hào)： MAX5548ETE+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 14/15頁(yè)
文件大?。?/td> 0K
描述： IC DAC 8BIT DUAL 30MA 16-TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
設(shè)置時(shí)間： 30µs
位數(shù)： 8
數(shù)據(jù)接口： I²C，串行，SPI?
轉(zhuǎn)換器數(shù)目： 2
電壓電源： 單電源
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 16-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 16-TQFN（3x3）
包裝： 帶卷 (TR)
輸出數(shù)目和類型： 2 電流，單極
采樣率（每秒）： 10M
MAX5548
Detailed Description
Architecture
The MAX5548 8-bit, dual current-steering DAC (see the
Functional Diagram) operates with DAC update rates
up to 10Msps in SPI mode and 400ksps in I2C mode.
The converter consists of a 16-bit shift register and
input DAC registers, followed by a current-steering
array. The current-steering array generates full-scale
currents up to 30mA per DAC. An integrated +1.25V
bandgap reference, control amplifier, and an external
resistor determine each data converter’s full-scale
output range.
Reference Architecture and Operation
The MAX5548 provides an internal +1.25V bandgap ref-
erence or accepts an external reference voltage source
between +0.5V and +1.5V. REFIN serves as the input for
an external low-impedance reference source. Leave
REFIN unconnected in internal reference mode. Internal
or external reference mode is software selectable
through the SPI/I2C serial interface.
The MAX5548’s reference circuit (Figure 1) employs a
control amplifier to regulate the full-scale current (IFS)
for the current outputs of the DAC. This device has a
software-selectable full-scale current range (see the
command summary in Table 4). After selecting a cur-
rent range, an external resistor (RFSADJ_) sets the full-
scale current. See Table 1 for a matrix of IFS and
RFSADJ selections.
During startup, when the power is first applied, the
MAX5548 defaults to the external reference mode, and
to the 1mA–2mA full-scale current-range mode.
DAC Data
The 8-bit DAC data is decoded as offset binary, MSB
first, with 1 LSB = IFS / 256, and converted into the cor-
responding current as shown in Table 2.
Serial Interface
The MAX5548 features a pin-selectable SPI/I2C serial
interface. Connect SPI/I2C to GND to select I2C mode,
or connect SPI/I2C to VDD to select SPI mode. SDA
Dual, 8-Bit, Programmable, 30mA
High-Output-Current DAC
8
_______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1
SCLK/SCL
Serial Clock Input. Connect SCL to VDD through a 2.4k
resistor in I2C mode.
2
DIN/SDA
Serial Data Input. Connect SDA to VDD through a 2.4k
resistor in I2C mode.
3
CS/A0
Chip-Select Input in SPI Mode/Address Select 0 in I2C Mode. CS is an active-low input. Connect A0 to
VDD or GND to set the device address in I2C mode.
4
SPI/I2C
SPI/I2C Select Input. Connect SPI/I2C to VDD to select SPI mode, or connect SPI/I2C to GND to select
I2C mode.
5
DOUT/A1
Serial Data Output in SPI Mode/Address Select 1 in I2C Mode. Use DOUT to daisy chain the MAX5548 to
other devices or to read back in SPI mode. The digital data is clocked out on SCLK’s falling edge.
Connect A1 to VDD or GND to set the device address in I2C mode.
6, 13, 15
N.C.
No Connection. Leave unconnected or connect to GND.
7
REFIN
Reference Input. Drive REFIN with an external reference source between +0.5V and +1.5V. Leave REFIN
unconnected in internal reference mode. Bypass REFIN with a 0.1F capacitor to GND as close to the
device as possible.
8, 16
GND
Ground
9
OUTB
DACB Output. OUTB provides up to 30mA of output current.
10
FSADJB
DACB Full-Scale Adjust Input. For maximum full-scale output current, connect a 20k
resistor between
FSADJB and GND. For minimum full-scale current, connect a 40k
resistor between FSADJB and GND.
11
FSADJA
DACA Full-Scale Adjust Input. For maximum full-scale output current, connect a 20k
resistor between
FSADJA and GND. For minimum full-scale current, connect a 40k
resistor between FSADJA and GND.
12
OUTA
DACA Output. OUTA provides up to 30mA of output current.
14
VDD
Power-Supply Input. Connect VDD to a +2.7 to +5.25V power supply. Bypass VDD to GND with a 0.1F
capacitor as close to the device as possible.
—
EP
Exposed Pad. Connect to GND. Do not use as a substitute ground connection.
相關(guān)PDF資料
PDF描述
MAX5550ETE+T IC DAC 10BIT DUAL 30MA 16-TQFN
MAX5556ESA+ IC DAC STEREO AUDIO 8-SOIC
MAX5631UCB+D IC DAC 16BIT 32CH S&H 64-TQFP
MAX5711AUT+T IC DAC 10BIT DUAL LP SER SOT23-6
MAX5712AUT+T IC DAC SERIAL 12BIT 1CH SOT23-6
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5550ETE 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
MAX5550ETE+ 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
MAX5550ETE+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
MAX5550ETE-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
MAX5550EVKIT+ 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 MAX5548/50 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*