参数资料
| 型号： | AD5547BRUZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/20页 |
| 文件大小： | 0K |
| 描述： | IC DAC 16BIT DUAL 38-TSSOP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 设计资源： | Precision, Unipolar, Inverting Conversion Using AD5547/57 DAC (CN0026) Precision, Unipolar, Noninverting Configuration for the AD5547/57 DAC (CN0027) Precision, Bipolar, Configuration for AD5547/AD5557 DAC (CN0028) |
| 标准包装： | 50 |
| 设置时间： | 500ns |
| 位数： | 16 |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 55µW |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-TFSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 38-TSSOP |
| 包装： | 管件 |
| 输出数目和类型： | 2 电流，单极；2 电流，双极 |
| 采样率（每秒）： | 2M |
| 产品目录页面： | 783 (CN2011-ZH PDF) |
AD5547/AD5557
Data Sheet
Rev. D | Page 18 of 20
REFERENCE SELECTION
When selecting a reference for use with the AD55xx series of
current output DACs, pay attention to the output voltage,
temperature coefficient specification of the reference. Choosing
a precision reference with a low output temperature coefficient
minimizes error sources. Table 10 lists some of the references
available from Analog Devices, Inc., that are suitable for use
with this range of current output DACs.
AMPLIFIER SELECTION
The primary requirement for the current-steering mode is an
amplifier with low input bias currents and low input offset voltage.
Because of the code-dependent output resistance of the DAC,
the input offset voltage of an op amp is multiplied by the variable
gain of the circuit. A change in this noise gain between two
adjacent digital fractions produces a step change in the output
voltage due to the amplifier’s input offset voltage. This output
voltage change is superimposed upon the desired change in output
between the two codes and gives rise to a differential linearity error,
which, if large enough, can cause the DAC to be nonmonotonic.
The input bias current of an op amp also generates an offset at
the voltage output because of the bias current flowing in the
feedback resistor, RFB.
Common-mode rejection of the op amp is important in voltage-
switching circuits because it produces a code-dependent error
at the voltage output of the circuit.
Provided that the DAC switches are driven from true wideband
low impedance sources (VIN and AGND), they settle quickly.
Consequently, the slew rate and settling time of a voltage-switching
DAC circuit is determined largely by the output op amp. To obtain
minimum settling time in this configuration, minimize capacitance
at the VREF node (the voltage output node in this application) of
the DAC. This is done by using low input capacitance buffer
amplifiers and careful board design.
Analog Devices offers a wide range of amplifiers for both precision
dc and ac applications, as listed in Table 11 and Table 12.
Table 10. Suitable Analog Devices Precision References
Part No.
Output Voltage (V)
Initial Tolerance (%)
Maximum Temperature
Drift (ppm/°C)
I
SS (mA)
Output Noise (V p-p)
Package(s)
10
0.05
3
1
20
SOIC-8
10
0.05
9
1
20
TSOT-5, SC70-5
5.0
0.06
3
1
10
SOIC-8
5.0
0.06
9
1
10
TSOT-5, SC70-5
2.5
0.1
3
1
6
SOIC-8
2.5
0.1
9
1
6
TSOT-5, SC70-5
3.0
0.1
3
1
10
SOIC-8
3.0
0.1
9
1
10
TSOT-5, SC70-5
2.048
0.05
3
0.5
1.75
SOIC-8, MSOP-8
2.50
0.04
3
0.5
1.75
SOIC-8, MSOP-8
3.00
0.04
3
0.5
2
SOIC-8, MSOP-8
5.00
0.04
3
0.5
3.4
SOIC-8, MSOP-8
2.500
0.04
3
0.8
3.5
SOIC-8, MSOP-8
5.000
0.04
3
0.8
8
SOIC-8, MSOP-8
2.5
0.16
9
0.12
5
TSOT-5
5.0
0.10
9
0.12
8
TSOT-5
Table 11. Suitable Analog Devices Precision Op Amps
Part No.
Supply Voltage (V)
V
OS Maximum
(V)
I
B Maximum
(nA)
0.1 Hz to 10 Hz
Noise (V p-p)
Supply Current (A)
Package(s)
±2 to ±20
25
0.1
0.5
600
SOIC-8 , PDIP-8
±2.5 to ±15
60
2
0.4
500
MSOP-8, SOIC-8
±5 to ±18
75
2
0.1
2300
MSOP-8, SOIC-8
±5 to ±15
75
12
0.077
3000
MSOP-8, SOIC-8
±5 to ±15
125
90
0.1
2000
SOIC-8, SOT-23-5
1.8 to 5
50
0.001
2.3
40
TSOT-5
1.8 to 5
50
0.001
2.3
40
MSOP-8, SOIC-8
2.7 to 5
65
0.001
2.3
1000
WLCSP-5, SOT-23-5
2.7 to 5
65
0.001
2.4
2000
TSOT-5
2.7 to 5
65
0.001
2.4
2000
MSOP-8, SOIC-8
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| AD5547CRUZ | 功能描述:IC DAC 16BIT PAR DUAL 38TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 设置时间:4µs 位数:12 数据接口:串行 转换器数目:2 电压电源:单电源 功率耗散（最大）:- 工作温度:-40°C ~ 85°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:管件 输出数目和类型:2 电压，单极 采样率（每秒）:* 产品目录页面:1398 (CN2011-ZH PDF) |
| AD5547CRUZ-REEL7 | 功能描述:IC DAC 16BIT PAR DUAL 38TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联 转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-LCC（J 形引线） 供应商设备封装:28-PLCC（11.51x11.51） 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）:143k |
| AD5547-EP | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual-Current Output, Parallel Input |
| AD5547SRU-EP | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual-Current Output, Parallel Input |
| AD5551 | 制造商:AD 制造商全称:Analog Devices 功能描述:5 V, Serial-Input Voltage-Output, 14-Bit DACs |
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