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参数资料
| 型号： | MAX5302CUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT LP SERIAL 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 设置时间： | 14µs |
| 位数： | 12 |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 1 电压，单极；1 电压，双极 |
| 采样率（每秒）： | * |
bits (C2, C1, C0), followed by the 12+1 data bits
D11...D0, S0 (Figure 4). Set the sub-bit (S0) to zero.
The 3-bit control code determines the register to be
updated and the configuration when exiting shutdown.
Figures 5 and 6 show the serial-interface timing require-
ments. The chip-select (CS) pin must be low to enable
the DAC’s serial interface. When CS is high, the inter-
face control circuitry is disabled. CS must go low at
least tCSS before the rising serial-clock (SCLK) edge to
properly clock in the first bit. When CS is low, data is
clocked into the internal shift register through the serial-
data input pin (DIN) on SCLK’s rising edge. The maxi-
mum guaranteed clock frequency is 10MHz. Data is
latched into the MAX5302 input/DAC register on CS’s
rising edge.
Figure 7 shows a method of connecting several
MAX5302s. In this configuration, the clock and the data
bus are common to all devices, and separate chip-select
lines are used for each IC.
Applications Information
Unipolar Output
For a unipolar output, the output voltage and the refer-
ence input have the same polarity. Figure 8 shows the
MAX5302 unipolar output circuit, which is also the typical
operating circuit. Table 2 lists the unipolar output
codes.
Figure 9 illustrates a Rail-to-Rail output. This circuit
shows the MAX5302 with the output amplifier configured
with a closed-loop gain of +2 to provide a 0V to 5V full-
scale range when a 2.5V reference is used.
Bipolar Output
The MAX5302 output can be configured for bipolar
operation using Figure 10’s circuit according to the fol-
lowing equation:
VOUT = VREF [(2NB / 4096) - 1]
where NB is the numeric value of the DAC’s binary
input code. Table 3 shows digital codes (offset binary)
and the corresponding output voltage for Figure 10’s
circuit.
Using an AC Reference
In applications where the reference has AC-signal com-
ponents, the MAX5302 has multiplying capability within
the reference input range specifications. Figure 11
shows a technique for applying a sine-wave signal to
the reference input where the AC signal is offset before
being applied to REF. The reference voltage must
never be more negative than GND.
The MAX5302’s total harmonic distortion plus noise
(THD+N) is typically less than -77dB (full-scale code),
given a 1Vp-p signal swing and input frequencies up to
25kHz. The typical -3dB frequency is 650kHz, as shown
in the Typical Operating Characteristics graphs.
MAX5302
Low-Power, 12-Bit Voltage-Output DAC
with Serial Interface
_______________________________________________________________________________________
9
Table 2. Unipolar Code Table
ANALOG OUTPUT
1111 1111 1111 (0)
1000 0000 0001 (0)
DAC CONTENTS
MSB
LSB
1000 0000 0000 (0)
0111 1111 1111 (0)
0000 0000 0000 (0)
0000 0000 0001 (0)
+V
4095
4096
REF
+V
2049
4096
REF
+V
2048
4096
V
2
REF
= +
+V
2047
4096
REF
+V
1
4096
REF
0V
Note: ( ) are for sub-bit.
MAX5302
DAC
REF
OUT
FB
GND
+5V
VDD
Figure 8. Unipolar Output Circuit
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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相关代理商/技术参数 |
参数描述 |
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| MAX5302EUA | 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 |
| MAX5302EUA+ | 功能描述:数模转换器- DAC 12-Bit 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 |
| MAX5302EUA+T | 功能描述:数模转换器- DAC 12-Bit 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 |
| MAX5302EUA-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 |
| MAX5304CUA | 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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