參數(shù)資料
型號： AD7854LARZ-REEL
廠商： Analog Devices Inc
文件頁數(shù)： 24/28頁
文件大?。?/td> 0K
描述： IC ADC 12BIT PARALLEL LP 28SOIC
標準包裝： 1,000
位數(shù)： 12
采樣率（每秒）： 100k
數(shù)據(jù)接口： 并聯(lián)
轉換器數(shù)目： 2
功率耗散（最大）： 30mW
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 28-SOIC（0.295"，7.50mm 寬）
供應商設備封裝： 28-SOIC W
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 1 個偽差分，單極；1 個偽差分，雙極
AD7854/AD7854L
REV. B
–5–
ORDERING GUIDE
Linearity
Power
Temperature
Error
Dissipation
Package
Model
Range
1
(LSB)
(mW)
Option
2
AD7854AQ
–40
°C to +85°C
1
15
Q-28
AD7854SQ
–55
°C to +125°C
1
15
Q-28
AD7854AR
–40
°C to +85°C
1
15
R-28
AD7854BR
–40
°C to +85°C
1/2
15
R-28
AD7854ARS
–40
°C to +85°C
1
15
RS-28
AD7854LAQ
3
–40
°C to +85°C
1
5.5
Q-28
AD7854LAR
3
–40
°C to +85°C
1
5.5
R-28
AD7854LARS
3
–40
°C to +85°C
1
5.5
RS-28
EVAL-AD7854CB
4
EVAL-CONTROL BOARD
5
NOTES
1Linearity error refers to the integral linearity error.
2Q = Cerdip; R = SOIC; RS = SSOP.
3L signifies the low power version.
4This can be used as a stand-alone evaluation board or in conjunction with the EVAL-CONTROL BOARD for
evaluation/demonstration purposes.
5This board is a complete unit allowing a PC to control and communicate with all Analog Devices evaluation boards
ending in the CB designator. For more information on Analog Devices products and evaluation boards visit our
World Wide Web home page at http://www.analog.com.
TO
OUTPUT
PIN
+2.1V
IOH
1.6mA
200A
IOL
CL
50pF
Figure 1. Load Circuit for Digital Output Timing
Specifications
ABSOLUTE MAXIMUM RATINGS
1
(TA = +25
°C unless otherwise noted)
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AVDD to DVDD . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
Analog Input Voltage to AGND . . . . –0.3 V to AVDD + 0.3 V
Digital Input Voltage to DGND . . . . –0.3 V to DVDD + 0.3 V
Digital Output Voltage to DGND . . . –0.3 V to DVDD + 0.3 V
REFIN/REFOUT to AGND . . . . . . . . . –0.3 V to AVDD + 0.3 V
Input Current to Any Pin Except Supplies
2 . . . . . . . . .
±10 mA
Operating Temperature Range
Commercial (A, B Versions) . . . . . . . . . . . –40
°C to +85°C
Commercial (S Version) . . . . . . . . . . . . . . –55
°C to +125°C
Storage Temperature Range . . . . . . . . . . . –65
°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150
°C
Cerdip Package, Power Dissipation . . . . . . . . . . . . . . 450 mW
θ
JA Thermal Impedance
. . . . . . . . . . . . . . . . . . . . . . 75
°C/W
Lead Temperature, (Soldering, 10 secs) . . . . . . . . . +300
°C
SOIC, SSOP Package, Power Dissipation . . . . . . . . . 450 mW
θ
JA Thermal Impedance . . . 75
°C/W (SOIC) 115°C/W (SSOP)
θJC Thermal Impedance . . . 25°C/W (SOIC) 35°C/W (SSOP)
Lead Temperature, Soldering
Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . +215
°C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . +220
°C
NOTES
1Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2Transient currents of up to 100 mA will not cause SCR latchup.
PIN CONFIGURATION
FOR DIP, SOIC AND SSOP
14
13
12
11
10
9
8
1
2
3
4
7
6
5
TOP VIEW
(Not to Scale)
17
16
15
20
19
18
28
27
26
25
24
23
22
21
AD7854
CONVST
DB10
DB11
CLKIN
BUSY
WR
RD
CS
DVDD
DGND
DB9
REFIN/REFOUT
AVDD
AGND
CREF1
CREF2
AIN(+)
DB6
DB7
DB8
AIN(–)
HBEN
DB0
DB1
DB5
DB2
DB3
DB4
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