参数资料
| 型号： | AD7801BR |
| 厂商： | Analog Devices Inc |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC DAC 8BIT 2.7V 20-SOIC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 37 |
| 设置时间： | 1.2µs |
| 位数： | 8 |
| 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）： | 12.9mW |
| 工作温度： | -40°C ~ 105°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： | 管件 |
| 输出数目和类型： | 1 电压，单极；1 电压，双极 |
| 采样率（每秒）： | 833k |
AD7801
–5–
REV. 0
SINK CURRENT – mA
V
OUT
–
mV
800
0
08
24
6
720
400
240
160
80
640
560
320
480
VDD = 5V AND 3V
INTERNAL REFERENCE
TA = +25 C
DAC LOADED WITH 00HEX
Figure 2. Output Sink Current Capa-
bility with VDD = 3 V and VDD = 5 V
REFERENCE VOLTAGE – Volts
ERROR
–
LSBs
0.5
0
1.0 1.2
2.8
1.4
1.6
1.8
2.2
2.4
2.6
2.0
0.45
0.25
0.15
0.1
0.05
0.4
0.35
0.2
0.3
VDD = 5V
TA = +25 C
INL ERROR
DNL ERROR
Figure 5. Relative Accuracy vs.
External Reference
FREQUENCY – Hz
ATTENUATION
–
dB
1
10
10k
100
1k
10
5
–40
0
–5
–10
–15
–20
–25
–30
–35
VDD = 5V
EXTERNAL SINEWAVE REFERENCE
DAC REGISTER LOADED WITH FFHEX
TA = +25°C
Figure 8. Large Scale Signal
Frequency Response
Typical Performance Characteristics–
SOURCE CURRENT – mA
V
OUT
–
Volts
02
8
46
5
4.92
4.2
4.84
4.76
4.68
4.6
4.52
4.44
4.36
4.28
VDD = 5V
INTERNAL REFERENCE
DAC REGISTER LOADED
WITH FFHEX
TA = +25°C
Figure 3. Output Source Current
Capability with VDD = 5 V
–50
–25
100
TEMPERATURE – C
3.5
2.0
I DD
–
mA
4.0
3.0
2.5
INTERNAL REFERENCE
LOGIC INPUTS = VDD OR GND
DAC ACTIVE
VDD = 5.5V
VDD = 3.3V
1.5
1.0
0.5
0
255075
125
Figure 6. Typical Supply Current
vs. Temperature
T
←
VOUT
VDD = 3V
INTERNAL VOLTAGE
REFERENCE
FULL SCALE CODE
CHANGE 00H-FFH
TA = +25°C
1
←
3
←
2
←
VOUT
CH1 5V, CH2 1V, CH3 20mV
TIME BASE = 200 ns/Div
WR
Figure 9. Full-Scale Settling Time
SOURCE CURRENT – mA
3.5
1.0
01
8
23
4567
3.25
2.5
2.25
1.75
1.25
3.0
2.75
2.0
1.5
V
OUT
–
Volts
VDD = 3V
INTERNAL REFERENCE
DAC REGISTER LOADED
WITH FFHex
TA = +25°C
Figure 4. Output Source Current
Capability with VDD = 3 V
VDD – Volts
I DD
–
mA
3.0
1.0
4.0
2.5
3.0
5.5
3.5
4.0
4.5
5.0
LOGIC INPUTS = VDD OR GND
LOGIC INPUTS = VIH OR VIL
DAC ACTIVE
INTERNAL REFERENCE
TA = +25°C
2.0
0
Figure 7. Typical Supply Current
vs. Supply Voltage
PD
VOUT
AD7801 POWER-UP TIME
VDD = 5V
INTERNAL REFERENCE
DAC IN POWER-DOWN INITIALLY
1 ←
2
←
CH1 = 2V/div, CH2 = 5V/Div,
TIME BASE = 2
s/Div
Figure 10. Exiting Power-Down (Full
Power-Down)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7801BR-REEL | 制造商:Analog Devices 功能描述:DAC 1-CH Current Steering 8-bit 20-Pin SOIC W T/R |
| AD7801BR-REEL7 | 制造商:Analog Devices 功能描述:DAC 1-CH Current Steering 8-bit 20-Pin SOIC W T/R 制造商:Analog Devices 功能描述:DAC 1CH CURRENT STEERING 8BIT 20SOIC W - Tape and Reel |
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| AD7801BRU-REEL | 制造商:Analog Devices 功能描述:DAC 1-CH Current Steering 8-bit 20-Pin TSSOP T/R 制造商:Analog Devices 功能描述:DAC 1CH CURRENT STEERING 8BIT 20TSSOP - Tape and Reel |
| AD7801BRU-REEL7 | 功能描述:IC DAC 8BIT PARALLEL INP 20TSSOP RoHS:否 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 设计资源:Unipolar, Precision DC Digital-to-Analog Conversion using AD5450/1/2/3 8-14-Bit DACs (CN0052) Precision, Bipolar, Configuration for AD5450/1/2/3 8-14bit Multiplying DACs (CN0053) AC Signal Processing Using AD5450/1/2/3 Current Output DACs (CN0054) Programmable Gain Element Using AD5450/1/2/3 Current Output DAC Family (CN0055) Single Supply Low Noise LED Current Source Driver Using a Current Output DAC in the Reverse Mode (CN0139) 标准包装:10,000 系列:- 设置时间:- 位数:12 数据接口:DSP，MICROWIRE?，QSPI?，串行，SPI? 转换器数目:1 电压电源:单电源 功率耗散（最大）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 薄型，TSOT-23-8 供应商设备封装:TSOT-23-8 包装:带卷 (TR) 输出数目和类型:1 电流，单极；1 电流，双极 采样率（每秒）:2.7M |
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