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參數資料
| 型號： | AD7891AS-1 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System |
| 中文描述： | 8-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL/PARALLEL ACCESS, PQFP44 |
| 封裝： | PLASTIC, MO-112-AA-1, MQFP-44 |
| 文件頁數： | 3/20頁 |
| 文件大小： | 173K |
| 代理商： | AD7891AS-1 |
–3–
REV. A
AD7891
A
Version
1
B
Version
Y
Version
Parameter
Units
Test Conditions/Comments
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
DB11–DB0
Floating-State Leakage Current
Floating-State Capacitance
5
Output Coding
4.0
0.4
4.0
0.4
4.0
0.4
V min
V max
I
SOURCE
= 200
μ
A
I
SINK
= 1.6 mA
±
10
15
±
10
15
±
10
15
μ
A max
pF max
Straight (Natural) Binary
2s Complement
Data Format Bit of Control Register = 0
Data Format Bit of Control Register = 1
CONVERSION RATE
Conversion Time
Track/Hold Acquisition Time
1.6
0.6
0.7
0.4
1.6
0.6
0.7
0.4
1.6
0.6
0.7
0.4
μ
s max
μ
s max
μ
s max
μ
s max
AD7891-1 Hardware Conversion
AD7891-1 Software Conversion
AD7891-2
POWER REQUIREMENTS
V
DD
I
DD
Normal Mode
Standby Mode
Power Dissipation
Normal Mode
Standby Mode
+5
+5
+5
V nom
±
5% for Specified Performance
17
80
17
80
18
80
mA max
μ
A max
Logic Inputs = 0 V or V
DD
V
DD
= 5 V
Typically 70mW
Typically 75
μ
W
85
400
85
400
90
400
mW max
μ
W max
NOTES
1
Temperature Ranges for the A and B Versions: –40
°
C to +85
°
C. Temperature Range for the Y Version: –55
°
C to +105
°
C.
2
The AD7891-1’s dynamic performance (THD and SNR) and the AD7891-2’s THD are measured with an input frequency of 10kHz. The AD7891-2’s SNR is
evaluated with an input frequency of 100kHz.
3
This throughput rate can only be achieved when the part is operated in the parallel interface mode. Maximum achievable throughput rate in the serial interface mode
is 357kSPS.
4
See Terminology.
5
Sample tested during initial release and after any redesign or process change that may affect this parameter.
6
REF IN must be buffered before being applied to V
INXB
.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS*
(T
A
= +25
°
C unless otherwise noted)
V
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
V
DD
to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7V
Analog Input Voltage to AGND
AD7891-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
17V
AD7891-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . –5 V, +10V
Reference Input Voltage to AGND . . . . –0.3 V to V
DD
+ 0.3V
Digital Input Voltage to DGND . . . . . . –0.3 V to V
DD
+ 0.3 V
Digital Output Voltage to DGND . . . . . –0.3 V to V
DD
+ 0.3 V
Operating Temperature Range
Commercial (A, B Version) . . . . . . . . . . . . –40
°
C to +85
°
C
Automotive (Y Version) . . . . . . . . . . . . . . –55
°
C to +105
°
C
Storage Temperature Range . . . . . . . . . . . . –65
°
C to +150
°
C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150
°
C
PQFP Package, Power Dissipation . . . . . . . . . . . . . . 450 mW
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 95
°
C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . +215
°
C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220
°
C
PLCC Package, Power Dissipation . . . . . . . . . . . . . . 500 mW
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 55
°
C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . +215
°
C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220
°
C
*Stresses 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.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD7891 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
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| AD7891BP-1 | LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System |
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| AD7891BS-1 | LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System |
| AD7891BS-2 | LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7891AS2 | 制造商:AD 功能描述:New |
| AD7891AS-2 | 制造商:Analog Devices 功能描述:ADC Single 500ksps 12-bit Parallel/Serial 44-Pin MQFP 制造商:Analog Devices 功能描述:IC 12-BIT ADC |
| AD7891ASZ-1 | 功能描述:IC DAS 12BIT 8CH HI-SPD 44-MQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - ADCs/DAC - 專用型 系列:- 產品培訓模塊:Data Converter Basics 標準包裝:1 系列:- 類型:電機控制 分辨率（位）:12 b 采樣率（每秒）:1M 數據接口:串行，并聯 電壓電源:單電源 電源電壓:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:100-TQFP 供應商設備封裝:100-TQFP（14x14） 包裝:剪切帶 (CT) 其它名稱:296-18373-1 |
| AD7891ASZ-1 | 制造商:Analog Devices 功能描述:IC 12-BIT ADC |
| AD7891ASZ-1REEL | 功能描述:IC DAS 12BIT 8CH 44-MQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - ADCs/DAC - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:數據采集系統（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數據接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
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