參數(shù)資料
型號: AD7841BSZ-REEL
廠商: Analog Devices Inc
文件頁數(shù): 7/13頁
文件大?。?/td> 0K
描述: IC DAC 14BIT OCTAL VOUT 44-MQFP
產(chǎn)品培訓(xùn)模塊: Data Converter Fundamentals
DAC Architectures
標(biāo)準(zhǔn)包裝: 800
設(shè)置時(shí)間: 31µs
位數(shù): 14
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 8
電壓電源: 模擬和數(shù)字,雙 ±
功率耗散(最大): 303mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-QFP
供應(yīng)商設(shè)備封裝: 44-MQFP(10x10)
包裝: 帶卷 (TR)
輸出數(shù)目和類型: 8 電壓,單極;8 電壓,雙極
采樣率(每秒): 32k
配用: EVAL-AD7841EBZ-ND - BOARD EVAL FOR AD7841
–3–
AD7841
(These characteristics are included for Design Guidance and are not subject
to production testing.)
AC PERFORMANCE CHARACTERISTICS
A & B
Parameter
Versions
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
Output Voltage Settling Time
31
s typ
Full-Scale Change to
±1/2 LSB. DAC Latch Contents Alternately
Loaded with All 0s and All 1s
Slew Rate
0.7
V/
s typ
Digital-to-Analog Glitch Impulse
230
nV-s typ
Measured with VREF(+) = +5 V, VREF(–) = –5 V. DAC Latch
Alternately Loaded with 1FFF Hex and 2000 Hex. Not Dependent
on Load Conditions
Channel-to-Channel Isolation
99
dB typ
See Terminology
DAC-to-DAC Crosstalk
40
nV-s typ
See Terminology
Digital Crosstalk
0.2
nV-s typ
Feedthrough to DAC Output Under Test Due to Change in Digital
Input Code to Another Converter
Digital Feedthrough
0.1
nV-s typ
Effect of Input Bus Activity on DAC Output Under Test
Output Noise Spectral Density
@ 1 kHz
200
nV/
√Hz typ
All 1s Loaded to DAC. VREF(+) = VREF(–) = 0 V
Specifications subject to change without notice.
TIMING SPECIFICATIONS1, 2
Parameter
Limit at TMIN, TMAX
Unit
Description
t1
15
ns min
Address to
WR Setup Time
t2
0
ns min
Address to
WR Hold Time
t3
50
ns min
CS Pulsewidth Low
t4
50
ns min
WR Pulsewidth Low
t5
0
ns min
CS to WR Setup Time
t6
0
ns min
WR to CS Hold Time
t7
20
ns min
Data Setup Time
t8
0
ns min
Data Hold Time
t9
31
s typ
Settling Time
t10
300
ns max
CLR Pulse Activation Time
t11
50
ns min
LDAC Pulsewidth Low
NOTES
1All input signals are specified with tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage level of 1.6 V.
2Rise and fall times should be no longer than 50 ns.
Specifications subject to change without notice.
t1
t2
t5
t6
t3
t4
t7
t8
t9
t10
t11
LDAC
CLR
WR
CS
A0, A1, A2
DATA
VOUT
Figure 1. Timing Diagram
(VCC = 5 V
5%; VDD = 15 V
10%; VSS = –15 V
10%; GND = DUTGND = 0 V)
REV. B
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