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参数资料
| 型号： | MAX5180BEEI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/14页 |
| 文件大小： | 0K |
| 描述： | IC DAC 10BIT 40MHZ DUAL 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： | 10 |
| 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）： | * |
| 产品目录页面： | 1397 (CN2011-ZH PDF) |
MAX5180/MAX5183
Dual, 10-Bit, 40MHz, Current/Voltage
Simultaneous-Output DACs
8
_______________________________________________________________________________________
Detailed Description
The MAX5180/MAX5183 are dual, 10-bit digital-to-ana-
log converters (DACs) capable of operating with clock
speeds up to 40MHz. Each of these dual converters
consists of separate input and DAC registers, followed
by a current source array capable of generating up to
1.5mA full-scale output current (Figure 1). An integrat-
ed 1.2V voltage reference and control amplifier deter-
mine the data converters’ full-scale output currents/
voltages. Careful reference design ensures close gain
matching and excellent drift characteristics. The
MAX5183’s voltage output operation features matched
400 on-chip resistors that convert the current array
current into a voltage.
Internal Reference and Control Amplifier
The MAX5180/MAX5183 provide an integrated
50ppm/°C, 1.2V, low-noise bandgap reference that can
be disabled and overridden by an external reference
voltage. REFO serves either as an external reference
input or an integrated reference output. If REN is con-
nected to AGND, the internal reference is selected and
REFO provides a 1.2V output. Due to its limited 10A
output drive capability, REFO must be buffered with an
external amplifier, if heavier loading is required.
The MAX5180/MAX5183 also employ a control amplifier
designed to simultaneously regulate the full-scale out-
put current (IFS) for both outputs of the devices. The
output current is calculated as follows:
IFS = 8 × IREF
where IREF is the reference output current (IREF =
VREFO/RSET) and IFS is the full-scale output current.
RSET is the reference resistor that determines the
amplifier’s output current on the MAX5180 (Figure 2).
This current is mirrored into the current-source array
where it is equally distributed between matched current
segments and summed to valid output current readings
for the DACs.
The MAX5183 converts each output current (DAC1 and
DAC2) into an output voltage (VOUT1, VOUT2) with two
internal, ground-referenced 400 load resistors. Using
the internal 1.2V reference voltage, the MAX5183’s inte-
grated reference output current resistor (RSET = 9.6k)
sets IREF to 125A and IFS to 1mA.
9.6k
REFR
REFO
1.2V REF
REN
CURRENT-
SOURCE ARRAY
DAC 1 SWITCHES
DAC 2 SWITCHES
400
MSB DECODE
CLK
OUTPUT
LATCHES
OUTPUT
LATCHES
MSB DECODE
*INTERNAL 400 AND 9.6k
RESISTORS FOR MAX5183 ONLY.
AVDD
AGND
DACEN
PD
*
DVDD
DGND
D9–D0
CS
CREF2
MAX5180
MAX5183
CREF1
OUT2P
OUT1P
OUT2N
OUT1N
400
400
400
INPUT
LATCHES
INPUT
LATCHES
*
Figure 1. Functional Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5180BEEI+ | 功能描述:数模转换器- DAC 10-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 |
| MAX5180BEEI+T | 功能描述:数模转换器- DAC 10-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 |
| MAX5180BEEI-T | 功能描述:数模转换器- DAC 10-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 |
| MAX5181 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:10-Bit, 40MHz, Current/Voltage-Output DACs |
| MAX5181_10 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:10-Bit, 40MHz, Current/Voltage-Output DACs |
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