- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄8592 > AD5557CRU (Analog Devices Inc)IC DAC 14BIT 2CH I OUT 38TSSOP PDF資料下載
參數(shù)資料
| 型號： | AD5557CRU |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 14BIT 2CH I OUT 38TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Fundamentals DAC Architectures |
| 設(shè)計資源： | 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) |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 設(shè)置時間： | 500ns |
| 位數(shù)： | 14 |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 55µW |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 38-TFSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 38-TSSOP |
| 包裝： | 管件 |
| 輸出數(shù)目和類型： | 2 電流，單極；2 電流，雙極 |
| 采樣率（每秒）： | 2M |
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VI-24T-IV-F2 | CONVERTER MOD DC/DC 6.5V 150W |
| VI-24R-IV-F2 | CONVERTER MOD DC/DC 7.5V 150W |
| VI-24P-IV-F2 | CONVERTER MOD DC/DC 13.8V 150W |
| VI-24N-IV-F4 | CONVERTER MOD DC/DC 18.5V 150W |
| VI-24M-IV-F2 | CONVERTER MOD DC/DC 10V 150W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD5557CRU-REEL7 | 功能描述:IC DAC 14BIT 2CH I OUT 38TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD5557CRUZ | 功能描述:IC DAC 14BIT 2CH I OUT 38TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
| AD5560 | 制造商:AD 制造商全稱:Analog Devices 功能描述:1.2 A Programmable Device Power Supply with Integrated 16-Bit Level Setting DACs |
| AD5560JBCZ | 功能描述:PMIC 解決方案 1.2A programmable DPS with DACs RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| AD5560JBCZ-REEL | 功能描述:PMIC 解決方案 1.2A programmable DPS with DACs RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。