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参数资料
| 型号： | DAC8562FSZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT PARALLEL 5V 20-SOIC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 1,000 |
| 设置时间： | 16µs |
| 位数： | 12 |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 30mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC W |
| 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）： | 62.5k |
DAC8562
REV. A
–10–
15
16
DGND
AGND
DATA
DAC-8562
13
VOUT
+12V OR +15V
10
CE
CLR
1
12
0.1F
4
REF-02
6
2
0.1F
Figure 31. Operating the DAC8562 on +12 V or +15 V
Supplies Using a REF02 Voltage Reference
Measuring Offset Error
One of the most commonly specified endpoint errors associated
with real-world nonideal DACs is offset error.
In most DAC testing, the offset error is measured by applying
the zero-scale code and measuring the output deviation from
0 volt. There are some DACs where offset errors may be present
but not observable at the zero scale because of other circuit limi-
tations (for example, zero coinciding with single supply ground).
In these DACs, nonzero output at zero code cannot be read as
the offset error. In the DAC8562, for example, the zero-scale er-
ror is specified to be +3 LSBs. Since zero scale coincides with
zero volt, it is not possible to measure negative offset error.
By adding a pull-down resistor from the output of the
DAC8562 to a negative supply as shown in Figure 32, offset er-
rors can now be read at zero code. This configuration forces the
output P-channel MOSFET to source current to the negative
supply thereby allowing the designer to determine in which di-
rection the offset error appears. The value of the resistor should
be such that, at zero code, current through the resistor is 200
A
maximum.
15
16
DGND
AGND
VDD
DATA
DAC-8562
13
0.1F
VOUT
+5V
10
CE
CLR
20
12
200A MAX
V–
Figure 32. Measuring Zero-Scale or Offset Error
Unipolar Output Operation
This is the basic mode of operation for the DAC8562. As shown
in Figure 30, the DAC8562 has been designed to drive loads as
low as 820
in parallel with 500 pF. The code table for this op-
eration is shown in Table III.
15
16
DGND
AGND
VDD
DATA
DAC-8562
13
10F
0.1F
0V
≤ V
OUT ≤ 4.095V
+5V
10
CE
CLR
20
12
820
500pF
Figure 30. Unipolar Output Operation
Table III. Unipolar Code Table
Hexadecimal Number
Decimal Number
Analog Output
in DAC Register
Voltage (V)
FFF
4095
+4.095
801
2049
+2.049
800
2048
+2.048
7FF
2047
+2.047
000
0
Operating the DAC8562 on +12 V or +15 V Supplies Only
Although the DAC8562 has been specified to operate on a
single, +5 V supply, a single +5 V supply may not be available in
many applications. Since the DAC8562 consumes no more than
6 mA, maximum, then an integrated voltage reference, such as
the REF02, can be used as the DAC8562 +5 V supply. The
configuration of the circuit is shown in Figure 31. Notice that
the reference’s output voltage requires no trimming because of
the REF02’s excellent load regulation and tight initial output
voltage tolerance. Although the maximum supply current of the
DAC8562 is 6 mA, local bypassing of the REF02’s output with
at least 0. 1
F at the DAC’s voltage supply pin is recommended
to prevent the DAC’s internal digital circuits from affecting the
DAC’s internal voltage reference.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DAC8562GBC | 制造商:AD 制造商全称:Analog Devices 功能描述:+5 Volt, Parallel Input Complete 12-Bit DAC |
| DAC8562SDGSR | 功能描述:数模转换器- DAC 16B,Dual,Lo Pwr Ultra-Lo Glitch 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 |
| DAC8562SDGST | 功能描述:数模转换器- DAC 16B,Dual,Lo Pwr Ultra-Lo Glitch 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 |
| DAC8562SDSCR | 功能描述:数模转换器- DAC 16B,Dual,Lo Pwr Ultra-Lo Glitch 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 |
| DAC8562SDSCT | 功能描述:数模转换器- DAC 16B,Dual,Lo Pwr Ultra-Lo Glitch 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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