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| 型号： | MAX5544ESA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/8页 |
| 文件大小： | 0K |
| 描述： | IC DAC 14BIT 5V SERIAL 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 设置时间： | 1µs |
| 位数： | 14 |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 1.5mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 1 电压，单极 |
| 采样率（每秒）： | * |
MAX5544
Low-Cost, +5V, Serial-Input,
Voltage-Output, 14-Bit DAC
6
_______________________________________________________________________________________
;;
;;;;;;;;;
;;
tCSHO
tCH
tCSSO
tCL
tDH
tDS
tCSH1
tCSS1
CS
SCLK
DIN
D13
D12
S0
Figure 1. Timing Diagram
;
;;
CS
SCLK
DIN
MSB
LSB
D13
D6
D5 D4 D3 D2 D1 D0
S1 S0
SUB-BITS
DAC
UPDATED
D12 D11 D10 D9 D8 D7
Figure 2. 3-Wire Interface Timing Diagram
Detailed Description
The MAX5544 voltage-output, 14-bit digital-to-analog
converter (DAC) offers 14-bit monotonicity with less
than 1LSB differential linearity error. Serial-data transfer
minimizes the number of package pins required.
The MAX5544 is composed of two matched DAC sec-
tions, with a 12-bit inverted R-2R DAC forming the
12LSBs and the 4MSBs derived from 15 identically
matched resistors. This architecture allows the lowest
glitch energy to be transferred to the DAC output on
major-carry transitions. It also decreases the DAC out-
put impedance by a factor of eight compared to a stan-
dard R-2R ladder, allowing unbuffered operation in
medium-load applications. Figure 1 is the timing dia-
gram.
Digital Interface
The MAX5544 digital interface is a standard 3-wire con-
nection compatible with SPI/QSPI/MICROWIRE inter-
faces. The chip-select input (CS) frames the serial data
loading at the data input pin (DIN). Immediately follow-
ing CS’s high-to-low transition, the data is shifted
synchronously and latched into the input register on the
rising edge of the serial-clock input (SCLK). After 16
data bits (14 data bits, plus two sub-bits set to zero)
have been loaded into the serial input register, it trans-
fers its contents to the DAC latch on CS’s low-to-high
transition (Figure 2). Note that if CS does not remain
low during the entire 16 SCLK cycles, data will be cor-
rupted. In this case, reload the DAC latch with a new
16-bit word.
External Reference
The MAX5544 operates with external voltage refer-
ences from 2V to 3V. The reference voltage determines
the DAC’s full-scale output voltage.
Power-On Reset
The MAX5544 has a power-on reset circuit to set the
DAC’s output to 0V in unipolar mode when VDD is first
applied. This ensures that unwanted DAC output volt-
ages will not occur immediately following a system
power-up, such as after power loss. In bipolar mode,
the DAC output is set to -VREF.
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| MAX5547ETA | 制造商:Maxim Integrated Products 功能描述:DUAL 10-BIT CURRENT-SINK OUTPUT D - Rail/Tube |
| MAX5547ETA+ | 制造商:Maxim Integrated Products 功能描述:DAC 2CH CURRENT STEERING 10-BIT 8TDFN EP - Rail/Tube |
| MAX5547ETA+T | 功能描述:数模转换器- DAC 10-Bit 2Ch Precision 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 |
| MAX5547ETA-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 |
| MAX5548ETE | 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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