参数资料
| 型号： | AD7226KRZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/16页 |
| 文件大小： | 0K |
| 描述： | IC DAC 8BIT LC2MOS QUAD 20-SOIC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 37 |
| 设置时间： | 4µs |
| 位数： | 8 |
| 数据接口： | 并联 |
| 转换器数目： | 4 |
| 电压电源： | 双 ± |
| 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： | 4 电压，单极；4 电压，双极 |
| 采样率（每秒）： | 143k |
| 产品目录页面： | 784 (CN2011-ZH PDF) |
REV.
–6–
AD7226
INTERFACE LOGIC INFORMATION
Address lines A0 and A1 select which DAC will accept data
from the input port. Table I shows the selection table for the
four DACs with Figure 4 showing the input control logic. When
the
WR signal is LOW, the input latches of the selected DAC
are transparent and its output responds to activity on the data
bus. The data is latched into the addressed DAC latch on the
rising edge of
WR. While WR is high the analog outputs remain
at the value corresponding to the data held in their respective latches.
Table I. AD7226 Truth Table
AD7226 Control Inputs
AD7226
WR
A1
A0
Operation
HX
XNo Operation Device Not Selected
LL
L
DAC A Transparent
LL
DAC A Latched
LL
H
DAC B Transparent
LH
DAC B Latched
LH
L
DAC C Transparent
HL
DAC C Latched
LH
H
DAC D Transparent
HH
DAC D Latched
L = Low State, H = High State, X = Don’t Care
A0
A1
WR
TO LATCH A
TO LATCH B
TO LATCH C
TO LATCH D
Figure 4. Input Control Logic
t
DS
t
DH
t
AH
t
AS
VINL
VINH
VINL
VDD
DATA
ADDRESS
WR
0
t
WR
NOTES
1. ALL INPUT SIGNAL RISE AND FALL TIMES
MEASURED FROM 10% TO 90% OF VDD.
t
r = tf = 20ns OVER VDD RANGE.
2. TIMING MEASUREMENT REFERENCE LEVEL IS
3. SELECTED INPUT LATCH IS TRANSPARENT WHILE
WR IS
LOW, THUS INVALID DATA DURING THIS TIME CAN CAUSE
SPURIOUS OUTPUTS.
VINH + VINL
2
Figure 5. Write Cycle Timing Diagram
D
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7226KRZ | 制造商:Analog Devices 功能描述:IC, DAC, 8BIT, 143KSPS, SOIC-20 |
| AD7226KRZ-REEL | 功能描述:IC DAC 8BIT QUAD W/AMP 20SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联 转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-LCC（J 形引线） 供应商设备封装:28-PLCC（11.51x11.51） 包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极 采样率（每秒）:143k |
| AD7226TD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7226TE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7226TE/883B | 制造商:Analog Devices 功能描述:DAC 4-CH R-2R 8BIT 20PIN LCC - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:CMOS DAC IC - Bulk |
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