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参数资料
| 型号： | MAX5188BEEI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/14页 |
| 文件大小： | 0K |
| 描述： | IC DAC 8BIT DUAL 40MHZ 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 设置时间： | 25µs |
| 位数： | 8 |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 28-QSOP |
| 包装： | 管件 |
| 输出数目和类型： | 4 电流，单极 |
| 采样率（每秒）： | * |
MAX5188/MAX5191
Dual, 8-Bit, 40MHz, Current/Voltage,
Alternate-Phase Output DACs
_______________________________________________________________________________________
9
External Reference
To disable the MAX5188/MAX5191’s internal reference,
connect REN to DVDD. 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 150A 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
must be pulled high with PD held at DGND. The
MAX5188/MAX5191 typically require 50s 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 1A. To enter this
mode, connect PD to DVDD. To return to active mode,
connect PD to DGND and DACEN to DVDD. About 50s
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.
RSET**
9.6k
IFS
RSET
CCOMP*
REFR
IREF
REFO
MAX4040
+1.2V
BANDGAP
REFERENCE
CURRENT-
SOURCE ARRAY
*COMPENSATION CAPACITOR (CCOMP = 100nF)
**9.6k
REFERENCE CURRENT SET RESISTOR
INTERNAL TO MAX5191 ONLY. USE EXTERNAL
RSET FOR MAX5188.
OPTIONAL EXTERNAL BUFFER
FOR HEAVIER LOADS
REN
MAX5188
MAX5191
IREF =
VREF
RSET
AGND
DGND
Figure 2. Setting IFS with the Internal +1.2V Reference and Control Amplifier
Table 1. Power-Down Mode Selection
X = Don’t care
MAX5191
MAX5188
MAX5191
MAX5188
1
X
Shutdown
AGND
0
Standby
AGND
PD
(POWER-DOWN SELECT)
DACEN
(DAC ENABLE)
POWER-DOWN
MODE
OUTPUT STATE
High-Z
0
1
Wake-Up
Last state prior to standby mode
High-Z
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5188BEEI+ | 功能描述:数模转换器- DAC 8-Bit 2Ch High Speed DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5188BEEI+T | 功能描述:数模转换器- DAC 8-Bit 2Ch High Speed DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5188BEEI-T | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5189 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual.8-Bit.40MHz.Current/Voltage.Simultaneous-Output DACs |
| MAX5189BEEI | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
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