- 您现在的位置：买卖IC网 > PDF目录10314 > AD7933BRU-REEL7 (Analog Devices Inc)IC ADC 10BIT 4CH 1.5MSPS 28TSSOP PDF资料下载
参数资料
| 型号： | AD7933BRU-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/32页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT 4CH 1.5MSPS 28TSSOP |
| 标准包装： | 1,000 |
| 位数： | 10 |
| 采样率（每秒）： | 1.5M |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 13.5mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 4 个单端，单极；2 个差分，单极；2 个伪差分，单极 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页当前第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
AD7933/AD7934
Rev. B | Page 19 of 32
RSOURCE ()
T
H
D
(
d
B)
–40
–45
–50
–55
–80
–75
–70
–65
–60
–90
–85
10
100
1k
03
71
3-
01
8
FIN = 50kHz
VDD =5V
VDD =3V
Figure 20. THD vs. Source Impedance in Single-Ended Mode
RSOURCE ()
T
H
D
(
d
B)
–60
–80
–75
–70
–65
–100
–85
–90
–95
10
100
1k
03
71
3-
01
9
FIN = 50kHz
VDD =5V
VDD =3V
Figure 21. THD vs. Source Impedance in Fully Differential Mode
Figure 22 shows a graph of the THD vs. the analog input fre-
quency for various supplies, while sampling at 1.5 MHz with an
SCLK of 25.5 MHz. In this case, the source impedance is 10 Ω.
INPUT FREQUENCY (kHz)
T
HD
(
d
B)
–50
–60
–70
–80
–110
–100
–90
–120
0
100
400
200
300
600
500
700
037
13
-02
0
FSAMPLE = 1.5MSPS
RANGE = 0 TO VREF
VDD =3V
SINGLE-ENDED MODE
VDD =5V/3V
DIFFERENTIAL MODE
VDD =5V
SINGLE-ENDED MODE
Figure 22. THD vs. Analog Input Frequency for Various Supply Voltages
ANALOG INPUTS
The AD7933/AD7934 have software selectable analog input
configurations. Users can choose from among the following
configurations: four single-ended inputs, two fully differential
pairs, or two pseudo differential pairs. The analog input
configuration is chosen by setting the MODE0/MODE1 bits in
the internal control register (see Table 10).
Single-Ended Mode
The AD7933/AD7934 can have four single-ended analog input
channels by setting the MODE0 and MODE1 bits in the control
register to 0. In applications where the signal source has a high
impedance, it is recommended to buffer the analog input before
applying it to the ADC. An amplifier suitable for this function is
the AD8021. The analog input range of the AD7933/AD7934
can be programmed to be either 0 V to VREF, or 0 V to 2 × VREF.
If the analog input signal to be sampled is bipolar, the internal
reference of the ADC can be used to externally bias up this
signal to make it the correct format for the ADC.
Figure 23 shows a typical connection diagram when operating
the ADC in single-ended mode. This diagram shows a bipolar
signal of amplitude ±1.25 V being preconditioned before it is
applied to the AD7933/AD7934. In cases where the analog
input amplitude is ±2.5 V, the 3R resistor can be replaced with a
resistor of value R. The resultant voltage on the analog input of
the AD7933/AD7934 is a signal ranging from 0 V to 5 V. In this
case, the 2 × VREF mode can be used.
0.47F
+1.25V
VIN
R
3R
0V
–1.25V
+2.5V
0V
VIN0
VIN3
VREFOUT
AD7933/
AD7934*
*ADDITIONAL PINS OMITTED FOR CLARITY.
03
71
3-
03
1
Figure 23. Single-Ended Mode Connection Diagram
Differential Mode
The AD7933/AD7934 can have two differential analog input
pairs by setting the MODE0 and MODE1 bits in the control
register to 0 and 1, respectively.
Differential signals have some benefits over single-ended
signals, including noise immunity based on the device’s
common-mode rejection and improvements in distortion
performance. Figure 24 defines the fully differential analog
input of the AD7933/AD7934.
相关PDF资料 |
PDF描述 |
|---|---|
| AD7450ARZ-REEL | IC ADC 12BIT DIFF IN 1MSPS 8SOIC |
| VE-B3X-MY | CONVERTER MOD DC/DC 5.2V 50W |
| VE-B3W-MY | CONVERTER MOD DC/DC 5.5V 50W |
| VE-B3T-MY | CONVERTER MOD DC/DC 6.5V 50W |
| VE-B3R-MY | CONVERTER MOD DC/DC 7.5V 50W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7933BRUZ | 功能描述:IC ADC 10BIT 4CH 1.5MSPS 28TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 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 |
| AD7933BRUZ-REEL7 | 功能描述:IC ADC 10BIT 4CH 1.5MSPS 28TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7934 | 制造商:AD 制造商全称:Analog Devices 功能描述:4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer |
| AD7934-6 | 制造商:AD 制造商全称:Analog Devices 功能描述:4-Channel, 625 kSPS, 12-Bit Parallel ADC with a Sequencer |
| AD7934BRU | 功能描述:IC ADC 12BIT 4CH 1.5MSPS 28TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
发布紧急采购，3分钟左右您将得到回复。