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參數(shù)資料
| 型號： | MAX5191BEEI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | Dual, 8-Bit, 40MHz, Current/Voltage, Alternate-Phase Output DACs |
| 中文描述： | PARALLEL, 8 BITS INPUT LOADING, 0.025 us SETTLING TIME, 8-BIT DAC, PDSO28 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, QSOP-28 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 226K |
| 代理商： | MAX5191BEEI |
M
Dual, 8-Bit, 40MHz, Current/Voltage,
Alternate-Phase Output DACs
_______________________________________________________________________________________
9
External Reference
To disable the MAX5188/MAX5191’s internal reference,
connect
REN
to DV
DD
. A temperature-stable external
reference may now be applied to drive the REFO pin
(Figure 3) to set the full-scale output. Choose a refer-
ence that can supply at least 150μA to drive the bias
circuit that generates the cascode current for the cur-
rent array. For improved accuracy and drift perfor-
mance, choose a fixed output voltage reference such
as the +1.2V, 25ppm/°C MAX6520 bandgap reference.
Standby Mode
To enter the lower-power standby mode, connect digi-
tal inputs PD and DACEN to DGND. In standby, both
the reference and the control amplifier are active with
the current array inactive. To exit this condition, DACEN
Table 1. Power-Down Mode Selection
must be pulled high with PD held at DGND. The
MAX5188/MAX5191 typically require 50μs to wake up
and allow both the outputs and the reference to settle.
Shutdown Mode
For lowest power consumption, the MAX5188/MAX5191
provide a power-down mode in which the reference,
control amplifier, and current array are inactive and the
DAC’s supply current is reduced to 1μA. To enter this
mode, connect PD to DV
DD
. To return to active mode,
connect PD to DGND and DACEN to DV
DD
. About 50μs
are required for the devices to leave shutdown mode
and settle their outputs to the values prior to shutdown.
Table 1 lists the power-down mode selection.
R
SET
**
9.6k
I
FS
R
SET
C
COMP
*
REFR
I
REF
REFO
MAX4040
+1.2V
BANDGAP
REFERENCE
CURRENT-
SOURCE ARRAY
*COMPENSATION CAPACITOR (C
COMP
= 100nF)
**9.6k
REFERENCE CURRENT SET RESISTOR
INTERNAL TO MAX5191 ONLY. USE EXTERNAL
R
SET
FOR MAX5188.
OPTIONAL EXTERNAL BUFFER
FOR HEAVIER LOADS
REN
MAX5188
MAX5191
I
REF
=
V
REF
R
SET
AGND
AGND
DGND
Figure 2. Setting I
FS
with the Internal +1.2V Reference and Control Amplifier
X = Don’t care
MAX5191
MAX5188
MAX5191
Last state prior to standby mode
MAX5188
1
X
Shutdown
AGND
0
0
Standby
AGND
PD
(POWER-DOWN SELECT)
DACEN
(DAC ENABLE)
POWER-DOWN
MODE
OUTPUT STATE
High-Z
0
1
Wake-Up
High-Z
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX5188 | Dual, 8-Bit, 40MHz, Current/Voltage, Alternate-Phase Output DACs |
| MAX5189BEEI | Dual, 8-Bit, 40MHz, Current/Voltage, Simultaneous-Output DACs |
| MAX5186 | Dual, 8-Bit, 40MHz, Current/Voltage, Simultaneous-Output DACs |
| MAX5186-MAX5189 | Dual, 8-Bit, 40MHz, Current/Voltage, Simultaneous-Output DACs |
| MAX5186BEEI | Dual, 8-Bit, 40MHz, Current/Voltage, Simultaneous-Output DACs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5191BEEI+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 2Ch High Speed 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 |
| MAX5191BEEI+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 2Ch High Speed 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 |
| MAX5191BEEI-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 |
| MAX5195 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:14-Bit.260Msps High-Dynamic Performance DAC |
| MAX5195EGM | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:14-Bit, 260Msps High-Dynamic Performance DAC |
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