参数资料
| 型号： | AD7948BRZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT MULTIPLYING 20-SOIC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 37 |
| 设置时间： | 600ns |
| 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）： | 25µW |
| 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： | 管件 |
| 输出数目和类型： | 1 电流，单极；1 电流，双极 |
| 采样率（每秒）： | 1.7M |
AD7943/AD7945/AD7948
REV. B
–4–
AC PERFORMANCE CHARACTERISTICS
NORMAL MODE
Parameter
B Grades
T Grade
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
Output Voltage Settling Time
600
700
ns typ
To 0.01% of Full-Scale Range. VREF =
+10 V; DAC Latch Alternately Loaded with
All 0s and All 1s
Digital to Analog Glitch Impulse
60
nV-s typ
Measured with VREF = 0 V. DAC Latch
Alternately Loaded with All 0s and All 1s
Multiplying Feedthrough Error
–75
dB max
DAC Latch Loaded with All 0s
Output Capacitance
60
pF max
All 1s Loaded to DAC
30
pF max
All 0s Loaded to DAC
Digital Feedthrough (AD7943)
5
nV-s typ
Feedthrough to the DAC Output with
LD1,
LD2 High and Alternate Loading of All 0s
and All 1s into the Input Shift Register
Digital Feedthrough (AD7945, AD7948) 5
5
nV-s typ
Feedthrough to the DAC Output with
CS
High and Alternate Loading of All 0s and
All 1s to the DAC Bus
Total Harmonic Distortion
–83
dB typ
Output Noise Spectral Density
@ 1 kHz
35
nV/
√Hz typ All 1s Loaded to DAC. V
REF = 0 V. Output
Op Amp Is OP07
Specifications subject to change without notice.
(AD7943: VDD = +4.5 V to +5.5 V; VIOUT1 = VIOUT2 = AGND = 0 V. AD7945, AD7948: VDD = +4.5 V to +5.5 V; VIOUT1 =AGND =
0 V. VREF = 6 V rms, 1 kHz sine wave; TA = TMIN to TMAX; DAC output op amp is AD843; unless otherwise noted.) These characteristics are in-
cluded for Design Guidance and are not subject to test.
AC PERFORMANCE CHARACTERISTICS
BIASED MODE (AD7943: VDD = +3 V to +5.5 V; VIOUT1 = VIOUT2 = AGND = 1.23 V. AD7945, AD7948: VDD = +3 V to +5.5 V; VIOUT1 = AGND =
1.23 V. VREF = 1 kHz, 2.45 V p-p, sine wave biased at 1.23 V; DAC output op amp is AD820; TA = TMIN to TMAX; unless otherwise noted.) These
characteristics are included for Design Guidance and are not subject to test.
Parameter
A Grades
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
Output Voltage Settling Time
5
s typ
To 0.01% of Full-Scale Range. VREF = 0 V
DAC Latch Alternately Loaded with All 0s and All 1s
Digital to Analog Glitch Impulse
60
nV-s typ
VREF = 1.23 V. DAC Register Alternately Loaded
with All 0s and All 1s
Multiplying Feedthrough Error
–75
dB max
DAC Latch Loaded with All 0s
Output Capacitance
60
pF max
All 1s Loaded to DAC
30
pF max
All 0s Loaded to DAC
Digital Feedthrough
5
nV-s typ
Feedthrough to the DAC Output with
LD1, LD2
High and Alternate Loading of All 0s and All 1s
into the Input Shift Register
Digital Feedthrough (AD7945, AD7948)
5
nV-s typ
Feedthrough to the DAC Output with CS High
and Alternate Loading of All 0s and All 1s to the
DAC Bus
Total Harmonic Distortion
–83
dB typ
Output Noise Spectral Density
@ 1 kHz
25
nV/
√Hz typ
All 1s Loaded to DAC. VREF = 1.23 V
Specifications subject to change without notice.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7948BRZ-REEL | 功能描述:IC DAC 12BIT MULT PARALL 20SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:2,400 系列:- 设置时间:- 位数:18 数据接口:串行 转换器数目:3 电压电源:模拟和数字 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:36-TFBGA 供应商设备封装:36-TFBGA 包装:带卷 (TR) 输出数目和类型:* 采样率（每秒）:* |
| AD7949 | 制造商:AD 制造商全称:Analog Devices 功能描述:16-Bit, 8-Channel, 500 kSPS PulSAR ADC |
| AD7949_09 | 制造商:AD 制造商全称:Analog Devices 功能描述:14-Bit, 8-Channel, 250 kSPS PulSAR ADC |
| AD7949BCPZ | 功能描述:IC ADC 14BIT 250KSPS 8CH 20LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD7949BCPZ | 制造商:Analog Devices 功能描述:IC ADC 14BIT 250KSPS LFCSP-20 |
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