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参数资料
型号： AD7228KNZ
厂商： ANALOG DEVICES INC
元件分类： DAC
英文描述： Octal, 8-Bit Voltage Out DAC
中文描述： OCTAL, PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDIP24
封装： SKINNY, PLASTIC, DIP-24
文件页数： 6/12页
文件大小： 230K
代理商： AD7228KNZ
SWITCHING CHARACTERISTICS
1, 2
Limit at 25
°C
Limit at TMIN, TMAX
Parameters
All Grades
(B, C Versions)
(T, U Versions)
Units
Conditions/Comments
t1
0
ns min
Address to WR Setup Time
t2
0
ns min
Address to WR Hold Time
t3
70
90
100
ns min
Data Valid to WR Setup Time
t4
10
ns min
Data Valid to WR Hold Time
t5
95
120
150
ns min
Write Pulse Width
NOTES
1Sample tested at 25
°C to ensure compliance. All input rise and fall times measured from 10% to 90% of +5 V, t
R = tF = 5 ns.
2Timing measurement reference level is
V
INH + V INL
2
INTERFACE LOGIC INFORMATION
Address lines A0, A1 and A2 select which DAC accepts data
from the input port. Table I shows the selection table for the
eight DACs with Figure 1 showing the input control logic.
When the WR signal is low, the input latch of the selected DAC
is 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. AD7228A Truth Table
AD7228A Control Inputs
AD7228A
WR
A2
A1
A0
Operation
H
X
No Operation
Device Not Selected
LLLL
DAC 1 Transparent
g
L
DAC 1 Latched
LLLH
DAC 2 Transparent
L
H
L
DAC 3 Transparent
L
H
DAC 4 Transparent
L
H
L
DAC 5 Transparent
L
H
L
H
DAC 6 Transparent
L
H
L
DAC 7 Transparent
L
H
DAC 8 Transparent
H = High State
L = Low State
X = Don’t Care
+5 V SUPPLY OPERATION
BC
T
U
Parameter
Version
Units
Conditions/Comments
STATIC PERFORMANCE
Resolution
8888
Bits
Relative Accuracy
± 2
LSB max
Differential Nonlinearity
± 1
LSB max
Guaranteed Monotonic
Full-Scale Error
± 4
± 2
± 4
± 2
LSB max
Zero Code Error
@ 25
°C
± 30
± 20
± 30
± 20
mV max
TMIN to TMAX
± 40
± 30
± 40
± 30
mV max
REFERENCE INPUT
Reference Input Range
1.2
V min
1.3
V max
Reference Input Resistance
2222k
min
Reference Input Capacitance
500
pF max
POWER REQUIREMENTS
Positive Supply Range
4.75/5.25
V min/V max
For Specified Performance
Positive Supply Current
@ 25
°C
16161616
A max
TMIN to TMAX
20
22
A max
Negative Supply Current
@ 25
°C
14141414
A max
TMIN to TMAX
18
20
A max
NOTES
All of the specifications as per Dual Supply Specifications except for negative full-scale settling-time when VSS = 0 V.
Specifications subject to change without notice.
(VDD = +5 V
5%, VSS; = 0 to –5 V
10%, GND = 0 V, VREF = +1.25 V, RL = 2 k , CL = 100 pF
unless otherwise noted.) AII specifications TMIN to TMAX unless otherwise noted.
(See Figures 1, 2; VDD = +5 V
5% or +10.8 V to +16.5 V; VSS = 0 V or –5 V
10%)
Figure 1. Input Control Logic
Figure 2. Write Cycle Timing Diagram
AD7228A
REV. A
–3–
相关PDF资料
PDF描述
AD7228KP Octal, 8-Bit Voltage Out DAC
AD7228KPZ Octal, 8-Bit Voltage Out DAC
AD7228LN Octal, 8-Bit Voltage Out DAC
AD7228LNZ Octal, 8-Bit Voltage Out DAC
AD7228TQ PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, CDIP24
相关代理商/技术参数
参数描述
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AD7228KPZ-REEL 功能描述:IC DAC 8BIT OCTAL W/AMP 28-PLCC 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:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 设置时间:1µs 位数:8 数据接口:串行 转换器数目:8 电压电源:双 ± 功率耗散（最大）:941mW 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 W 包装:带卷 (TR) 输出数目和类型:8 电压，单极 采样率（每秒）:*
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