参数资料
型号: AD7764BRUZ
厂商: Analog Devices Inc
文件页数: 11/33页
文件大小: 0K
描述: IC ADC 24BIT S/D 312KSPS 28TSSOP
标准包装: 1
位数: 24
采样率(每秒): 312k
数据接口: 串行,SPI?
转换器数目: 1
功率耗散(最大): 371mW
电压电源: 模拟和数字
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: 管件
输入数目和类型: 1 个差分,单极;1 个差分,双极
产品目录页面: 779 (CN2011-ZH PDF)
AD7764
Rev. A | Page 18 of 32
AD7764 INPUT STRUCTURE
The AD7764 requires a 4.096 V input to the reference pin,
VREF+, supplied by a high precision reference, such as the
ADR444. Because the input to the device’s Σ-Δ modulator is
fully differential, the effective differential reference range is
8.192 V.
V
192
.
8
096
.
4
2
)
(
=
×
=
+ Diff
REF
V
As is inherent in Σ-Δ modulators, only a certain portion of this
full reference may be used. With the AD7764, 80% of the full
differential reference can be applied to the modulator’s differ-
ential inputs.
V
5536
.
6
8
.
0
V
192
.
8
_
=
×
=
FULLSCALE
Input
Modulator
This means that a maximum of ±3.2768 V p-p full-scale can be
applied to each of the AD7764 modulator inputs (Pin 5 and
Pin 6), with the AD7764 being specified with an input 0.5 dB
down from full scale (0.5 dBFS). The AD7764 modulator
inputs must have a common-mode input of 2.048 V.
Figure 34 shows the relative scaling between the differential
voltages applied to the modulator pins and the respective 24-bit
twos complement digital outputs.
06518-
120
INPUT TO MODULATOR
PIN 5 AND PIN 6
VIN– AND VIN+
VIN+ = 3.6855V
0111 1111 1111 1111 1111 1111
0000 0000 0000 0000 0000 0000
+3.2768V = MODULATOR FULL-SCALE = 80% OF 4.096V
80% OF 4.096V = MODULATOR FULL-SCALE = –3.2768V
+4.096V
–4.096V
VIN– = 0.4105V
VIN+ = 2.048V
VIN– = 2.048V
VIN– = 3.6855V
VIN+ = 0.4105V
1000 0000 0000 0000 0000 0000
0111 1000 1101 0110 1111 1101
1000 0111 0010 1001 0000 0010
–0.5dBFS INPUT
OVERRANGE REGION
DIGITAL OUTPUT
ON SDO PIN
0000 0000 0000 0000 0000 0001
1111 1111 1111 1111 1111 1111
TWOS COMPLEMENT
DIGITAL OUTPUT
INPUT VOLTAGE (V)
Figure 34. AD7764 Scaling: Modulator Input Voltage vs. Digital Output Code
相关PDF资料
PDF描述
AD7357BRUZ IC ADC DUAL14BIT 4.2MSPS 16TSSOP
AD7731BRZ IC ADC 24BIT SIGMA-DELTA 24-SOIC
LTC2355IMSE-14#PBF IC ADC 14BIT 3.5MSPS 10-MSOP
MAX9092AUA+T IC COMPARATOR GP DUAL 8UMAX
VI-B13-MX-F4 CONVERTER MOD DC/DC 24V 75W
相关代理商/技术参数
参数描述
AD7764BRUZ-REEL7 功能描述:IC ADC 24BIT S/D 312KSPS 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
AD7765 制造商:AD 制造商全称:Analog Devices 功能描述:24-Bit, 8.5 mW, 109 dB, 128/64/32 kSPS ADCs
AD7765_07 制造商:AD 制造商全称:Analog Devices 功能描述:24-Bit, 156 kSPS, 112 dB ヒ-ツ ADC with On-Chip Buffers and Serial Interface
AD7765BRUZ 功能描述:IC ADC 24BIT S/D 156KSPS 28TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 其它有关文件:TSA1204 View All Specifications 标准包装:1 系列:- 位数:12 采样率(每秒):20M 数据接口:并联 转换器数目:2 功率耗散(最大):155mW 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-TQFP 供应商设备封装:48-TQFP(7x7) 包装:Digi-Reel® 输入数目和类型:4 个单端,单极;2 个差分,单极 产品目录页面:1156 (CN2011-ZH PDF) 其它名称:497-5435-6
AD7765BRUZ-REEL7 功能描述:IC ADC 24BIT S/D 156KSPS 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