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| 型號： | EVAL-AD5424EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 16/29頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVALUATION FOR AD5424 |
| 產(chǎn)品培訓(xùn)模塊： | DAC Architectures |
| 標準包裝： | 1 |
| DAC 的數(shù)量： | 1 |
| 位數(shù)： | 8 |
| 采樣率（每秒）： | 20.4M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 設(shè)置時間： | 30µs |
| DAC 型： | 電流 |
| 工作溫度： | -40°C ~ 125°C |
| 已供物品： | 板，CD |
| 已用 IC / 零件： | AD5424 |
| 相關(guān)產(chǎn)品： | AD5424YRUZ-REEL7-ND - IC DAC 8BIT MULTIPLYING 16-TSSOP AD5424YRUZ-REEL-ND - IC DAC 8BIT MULTIPLYING 16-TSSOP AD5424YRUZ-ND - IC DAC 8BIT MULTIPLYING 16-TSSOP AD5424YRU-REEL7-ND - IC DAC 8BIT MULTIPLYING 20-TSSOP AD5424YRU-ND - IC DAC 8BIT MULTIPLYING 16-TSSOP AD5424YCPZ-REEL7-ND - IC DAC 8BIT MULTIPLYING 20-LFCSP AD5424YCPZ-ND - IC DAC 8BIT MULTIPLYING 20-LFCSP |
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AD5424/AD5433/AD5445
Data Sheet
Rev. D | Page 22 of 28
Table 9. Suitable ADI Precision References
Part No.
Output Voltage (V)
Initial Tolerance (%)
Temp Drift (ppm/°C)
ISS (mA)
Output Noise (V p-p)
Package
10
0.05
3
1
20
SOIC-8
10
0.05
9
1
20
TSOT-23, SC70
5
0.06
3
1
10
SOIC-8
5
0.06
9
1
10
TSOT-23, SC70
2.5
0.10
3
1
6
SOIC-8
2.5
0.10
9
1
6
TSOT-23, SC70
3
0.10
3
1
10
SOIC-8
3
0.10
9
1
10
TSOT-23, SC70
2.5
0.04
3
0.8
3.5
SOIC-8
5
0.04
3
0.8
8
SOIC-8
2.5
0.16
9
0.12
5
TSOT-23
5
0.10
9
0.12
8
TSOT-23
Table 10. Suitable ADI Precision Op Amps
Part No.
Supply Voltage (V)
VOS (Max) (V)
IB (Max) (nA)
0.1 Hz to 10 Hz
Noise (V p-p)
Supply Current (A)
Package
±2 to ±20
25
0.1
0.5
600
SOIC-8
±2.5 to ±15
60
2
0.4
500
MSOP, SOIC-8
2.7 to 5
5
0.05
1
975
MSOP, SOIC-8
1.8 to 6
50
0.001
2.3
50
TSOT
2.7 to 6
5
0.1
0.5
850
TSOT, SOIC-8
Table 11. Suitable ADI High Speed Op Amps
Part No.
Supply Voltage (V)
BW at ACL (MHz)
Slew Rate (V/s)
VOS (Max) (V)
IB (Max) (nA)
Package
5 to 24
145
180
1500
6000
SOIC-8, SOT-23, MSOP
±2.5 to ±12
490
120
1000
10500
SOIC-8, MSOP
3 to 12
350
425
3000
750
SOIC-8, SC70-5
±3 to ±6
320
1300
10000
7000
SOIC-8
REFERENCE SELECTION
AD5445 family of current output DACs, pay attention to the
reference’s output voltage temperature coefficient specification.
This parameter not only affects the full-scale error, but can also
affect the linearity (INL and DNL) performance. The reference
temperature coefficient should be consistent with the system
accuracy specifications. For example, an 8-bit system required
to hold its overall specification to within 1 LSB over the
temperature range 0°C to 50°C dictates that the maximum
system drift with temperature should be less than 78 ppm/°C.
A 12-bit system with the same temperature range to overall
specification within 2 LSBs requires a maximum drift of
10 ppm/°C. By choosing a precision reference with low output
temperature coefficient this error source can be minimized.
Table 9 suggests some references available from Analog Devices
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. The input offset voltage of an op amp is multiplied by
the variable gain (due to the code dependent output resistance
of the DAC) of the circuit. A change in the 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 on the desired change in output
between the two codes and gives rise to a differential linearity
error, which, if large enough, could cause the DAC to be non-
monotonic. In general, the input offset voltage should be <1/4
LSB to ensure monotonic behavior when stepping through codes.
The input bias current of an op amp also generates an offset at
the voltage output as a result of the bias current flowing into the
feedback resistor, RFB. Most op amps have input bias currents
low enough to prevent significant errors in 12-bit applications.
Common-mode rejection of the op amp is important in voltage-
switching circuits, since it produces a code dependent error at
the voltage output of the circuit. Most op amps have adequate
common mode rejection for use at 8-, 10-, and 12-bit resolution.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-AD5425EB | 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk |
| EVAL-AD5425EBZ | 功能描述:BOARD EVALUATION FOR AD5425 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
| EVAL-AD5426EB | 制造商:Analog Devices 功能描述:EVAL BD FOR AD5426, 0BIT HIGH BANDWIDTH MULTIPLYING DACS W/ - Bulk |
| EVAL-AD5428EBZ | 制造商:Analog Devices 功能描述:EVAL BD FOR 8-/10-/12-BIT, PARALLEL INPUT, DUAL-CH, CURRENT - Bulk |
| EVAL-AD5429EB | 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk |
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