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參數(shù)資料
| 型號： | MAX5380PEUK+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 8BIT 2WIRE SER SOT23-5 |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 設(shè)置時間： | 20µs |
| 位數(shù)： | 8 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 571mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SC-74A，SOT-753 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-5 |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 1 電壓，單極 |
| 采樣率（每秒）： | * |
MAX5380/MAX5381/MAX5382
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
8
_______________________________________________________________________________________
Detailed Description
The MAX5380/MAX5381/MAX5382 voltage-output, 8-bit
digital-to-analog converters (DACs) offer full 8-bit perfor-
mance with less than 1LSB integral nonlinearity error
and less than 1LSB differential nonlinearity error, ensur-
ing monotonic performance. The devices use a simple
2-wire, fast-mode I2C-compatible serial interface that
operates at up to 400kHz. The MAX5380/MAX5381/
MAX5382 include an internal reference, an output
buffer, and a low-current shutdown mode, which make
these devices ideal for low-power, highly integrated
applications (See Figure 1. Functional Diagram).
Analog Section
The MAX5380/MAX5381/MAX5382 employ a current-
steering DAC topology as shown in Figure 2. At the core
of the DAC is a reference voltage-to-current converter
(V/I) that generates a reference current. This current is
mirrored to 255 equally weighted current sources. DAC
switches control the outputs of these current mirrors so
that only the desired fraction of the total current-mirror
currents is steered to the DAC output. The current is
then converted to a voltage across a resistor, and this
voltage is buffered by the output buffer amplifier.
Output Voltage
Table 1 shows the relationship between the DAC code
and the analog output voltage. The 8-bit DAC code is
binary unipolar with 1LSB = VREF / 256. The MAX5380/
MAX5381 have a full-scale output voltage of (+2V -
1LSB) and (+4V - 1LSB), respectively, set by the internal
references. The MAX5382 has a full-scale output volt-
age of (0.9 x VDD - 1LSB).
Output Buffer
The DAC voltage output is an internally buffered unity-
gain follower that typically slews at ±0.4V/s. The out-
put can swing from 0 to full scale. With a 1/4 FS to 3/4
FS output transition, the amplifier outputs typically settle
to 1/2LSB in less than 5s when loaded with 10k
in
parallel with 50pF. The buffer amplifiers are stable with
any combination of resistive loads >10k
and capaci-
tive loads <50pF.
VREF
SW1
SW2
SW255
OUT
Figure 2. Current-Steering Topology
VDD
OUT
10k
GND
SDA
SCL
255
8
CURRENT-
STEERING
DAC
DATA LATCH
SERIAL INPUT
REGISTER
CONTROL
LOGIC
MAX5380
MAX5381
MAX5382
REF
Figure 1. Functional Diagram
Table 1. Unipolar Code Output Voltage
0000 0001
0.9 x VDD / 256
15.6mV
7.8mV
0000 0000
0
1000 0000
0.9 x VDD / 2
+2V
+1V
1111 1111
0.9 x VDD x (255 / 256)
4V x (255 / 256)
2V x (255 / 256)
MAX5382
MAX5381
MAX5380
DAC CODE
OUTPUT VOLTAGE
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| MAX5381LEUK+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)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5381LEUK-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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5381MEUK | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product |
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