参数资料
型号: AD7738BRU-REEL7
厂商: Analog Devices Inc
文件页数: 18/28页
文件大小: 0K
描述: IC ADC 24BIT 8CH SIG-DEL 28TSSOP
标准包装: 1,000
位数: 24
采样率(每秒): 15.4k
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 100mW
电压电源: 模拟和数字
工作温度: -40°C ~ 105°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: 8 个单端,单极;8 个单端,双极;4 个差分,单极;4 个差分,双极
配用: EVAL-AD7738EBZ-ND - BOARD EVAL FOR AD7738
REV. 0
AD7738
–25–
Figure 16. Typical ADC Frequency Response
NORMALIZED INPUT FREQUENCY
(INPUT FREQUENCY
CONVERSION TIME)
0
0.1
10
1
GAIN
dB
–10
–20
–30
–40
–50
–60
CHOP = 1
a. Chopping Enabled
NORMALIZED INPUT FREQUENCY
(INPUT FREQUENCY
CONVERSION TIME)
0
0.1
1000
1
GAIN
dB
–10
–20
–30
–40
–50
–60
10
100
CHOP = 0
b. Chopping Disabled
Analog Inputs Voltage Range
The absolute input voltage range with input the buffer enabled
is restricted from AGND + 200 mV to AVDD – 300 mV, which
also places restrictions on the common-mode range. Care must
be taken in setting up the common-mode voltage and input
voltage range so that these limits are not exceeded, otherwise
there will be degradation in linearity performance.
The analog inputs on the AD7738 can accept either unipolar or
bipolar input voltage ranges. Bipolar input ranges do not imply
that the part can handle negative voltages with respect to system
ground on its analog inputs. Unipolar and bipolar signals on the
AIN(+) input are referenced to the voltage on the respective
AIN(–) input.
For example, if AINCOM is 2.5 V and CH0 is configured to
measure AIN0 – AINCOM, 0 V to 1.25 V, the input voltage
range on the AIN0 input is 2.5 V to 3.75 V. If CH0 is config-
ured to measure AIN0 – AINCOM,
±1.25 V, the input voltage
range on the AIN0 input is 1.25 V to 3.75 V.
Analog Inputs Extended Voltage Range
The AD7738 output data code span corresponds to the nominal
input voltage range. However, the correct operation of the ADC
is guaranteed within the min/max input voltage range.
When the CLAMP bit of the Mode register is set to 1, the
Channel Data register will be digitally clamped either to all
zeros or all ones when the analog input voltage goes outside
the nominal input voltage range.
As shown in Tables XIII and XIV, when CLAMP = 0, the data
reflect the analog input voltage outside the nominal voltage
range. In this case, the SIGN and OVR bits in the Channel
Status register should be considered along with the Data register
value to decode the actual conversion result.
Table XIII. Input Voltage Range
1.25 V, 16 Bits, CLAMP = 0
Input (V)
Data (Hex)
SIGN
OVR
+1.45000
147B
0
1
+1.25008
0001
0
1
+1.25004
0000
0
1
+1.25000
FFFF
0
+0.00004
8001
0
0.00000
8000
0
–0.00004
7FFF
1
0
–1.25000
0000
1
0
–1.25004
FFFF
1
–1.25008
FFFE
1
–1.45000
EB85
1
Table XIV. Input Voltage Range 0 V to 1.25 V, 16 Bits,
CLAMP = 0
Input (V)
Data (Hex)
SIGN
OVR
1.45000
28F5
0
1
1.25004
0001
0
1
1.25002
0000
0
1
1.25000
FFFF
0
0.00002
0001
0
0.00000
0000
0
–0.00002
0000
1
相关PDF资料
PDF描述
MS27484T8A35SD CONN PLUG 6POS STRAIGHT W/SCKT
CXS3102A1810P CONN RCPT 4POS PNL MNT PIN
VI-23P-CU-F4 CONVERTER MOD DC/DC 13.8V 200W
EN3P16M26SX CONN RCPT 16POS MALE PANEL #26
AD7356YRUZ-RL IC ADC DUAL 12BIT 5MSPS 16TSSOP
相关代理商/技术参数
参数描述
AD7738BRUZ 功能描述:IC ADC 24BIT 8-CH 28-TSSOP 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
AD7738BRUZ 制造商:Analog Devices 功能描述:IC 24BIT ADC SMD 7738 TSSOP28
AD7738BRUZ-REEL 功能描述:IC ADC 24BIT 8CH SIG-DEL 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: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
AD7738BRUZ-REEL7 功能描述:IC ADC 24BIT 8CH SIG-DEL 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: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
AD7739 制造商:AD 制造商全称:Analog Devices 功能描述:8-Channel, High Throughput, 24-Bit Sigma-Delta ADC