参数资料
型号: AD7478AARMZ-REEL
厂商: Analog Devices Inc
文件页数: 2/29页
文件大小: 0K
描述: IC ADC 8BIT 1MSPS 8-MSOP
标准包装: 3,000
位数: 8
采样率(每秒): 1M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 17.5mW
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: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 带卷 (TR)
输入数目和类型: 1 个单端,单极
AD7476A/AD7477A/AD7478A
Rev. F | Page 9 of 28
Timing Diagrams
TO OUTPUT
PIN
CL
50pF
200
A
IOH
200
A
IOL
1.6V
02930-002
Figure 2. Load Circuit for Digital Output Timing Specifications
Timing Example 1
Having fSCLK = 20 MHz and a throughput of 1 MSPS, a cycle
time of
t2 + 12.5 (1/fSCLK) + tACQ = 1 s
where:
t2 = 10 ns min, leaving tACQ to be 365 ns. This 365 ns satisfies the
requirement of 250 ns for tACQ.
From Figure 4, tACQ is comprised of
2.5 (1/fSCLK) + t8 + tQUIET
where:
t8 = 36 ns maximum. This allows a value of 204 ns for tQUIET,
satisfying the minimum requirement of 50 ns.
Timing Example 2
Having fSCLK = 5 MHz and a throughput is 315 kSPS yields a
cycle time of
t2 + 12.5 (1/fSCLK) + tACQ = 3.174 s
where:
t2 = 10 ns min, this leaves tACQ to be 664 ns. This 664 ns satisfies
the requirement of 250 ns for tACQ.
From Figure 4, tACQ is comprised of
2.5 (1/fSCLK) + t8 + tQUIET, t8 = 36 ns maximum
This allows a value of 128 ns for tQUIET, satisfying the minimum
requirement of 50 ns.
In this example and with other, slower clock values, the signal
may already be acquired before the conversion is complete, but
it is still necessary to leave 50 ns minimum tQUIET between
conversions. In Example 2, acquire the signal fully at
approximately Point C in Figure 4.
CS
SCLK
SDATA
t2
t6
t3
t4
t7
t5
t8
tCONVERT
tQUIET
ZERO
DB11
DB10
DB2
DB1
DB0
B
THREE-STATE
THREE-
STATE
Z
4 LEADING ZEROS
1
3
13
14
15
16
t1
4
5
2
02930-003
Figure 3. AD7476A Serial Interface Timing Diagram
CS
SCLK
t2
tCONVERT
B
1
2
5
13
14
15
16
C
t8
tQUIET
tACQ
12.5(1/fSCLK)
1/THROUGHPUT
3
4
02930-004
Figure 4. Serial Interface Timing Example
相关PDF资料
PDF描述
MS27473T10B13SB CONN PLUG 13POS STRAIGHT W/SCKT
AD7478AAKSZ-REEL7 IC ADC 8BIT 1MSPS SC70-6 T/R
AD7478AAKSZ-REEL IC ADC 8BIT 1MSPS SC70-6 T/R
D38999/20FB98PALC CONN HSG RCPT 6POS WALL MT PINS
MS27484T22B21SLC CONN HSG PLUG 21POS STRGHT SCKT
相关代理商/技术参数
参数描述
AD7478AARMZ-REEL7 功能描述:IC ADC 8BIT 1MSPS 8-MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率(每秒):15 数据接口:MICROWIRE?,串行,SPI? 转换器数目:1 功率耗散(最大):480µW 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:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN(5x7) 包装:带卷 (TR) 输入数目和类型:16 个单端,双极;8 个差分,双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
AD7478ART 制造商:Analog Devices 功能描述:ADC SGL SAR 1MSPS 8BIT SERL 6PIN SOT-23 - Bulk
AD7478ART-500RL7 功能描述:IC ADC 8BIT 1MSPS SOT-23-6 RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率(每秒):3M 数据接口:- 转换器数目:- 功率耗散(最大):- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:-
AD7478ART-REEL 制造商:AD 制造商全称:Analog Devices 功能描述:1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SOT-23
AD7478ART-REEL7 制造商:Analog Devices 功能描述: