AD7891AP-1(RevA) 데이터 시트보기 (PDF) - Analog Devices
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AD7891AP-1 Datasheet PDF : 20 Pages
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AD7891
Parameter
A
B
Version1 Version
Y
Version
Units
Test Conditions/Comments
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
DB11–DB0
Floating-State Leakage Current
Floating-State Capacitance5
Output Coding
4.0
4.0
4.0
0.4
0.4
0.4
± 10
± 10
± 10
15
15
15
Straight (Natural) Binary
2s Complement
V min
V max
µA max
pF max
ISOURCE = 200 µA
ISINK = 1.6 mA
Data Format Bit of Control Register = 0
Data Format Bit of Control Register = 1
CONVERSION RATE
Conversion Time
1.6
1.6
1.6
µs max
Track/Hold Acquisition Time
0.6
0.6
0.6
µs max
AD7891-1 Hardware Conversion
0.7
0.7
0.7
µs max
AD7891-1 Software Conversion
0.4
0.4
0.4
µs max
AD7891-2
POWER REQUIREMENTS
VDD
IDD
Normal Mode
Standby Mode
Power Dissipation
Normal Mode
Standby Mode
+5
+5
+5
V nom
± 5% for Specified Performance
17
17
18
mA max
80
80
80
µA max
Logic Inputs = 0 V or VDD
VDD = 5 V
85
85
90
mW max
Typically 70␣ mW
400
400
400
µW max
Typically 75 µW
NOTES
1Temperature Ranges for the A and B Versions: –40°C to +85°C. Temperature Range for the Y Version: –55°C to +105°C.
2The AD7891-1’s dynamic performance (THD and SNR) and the AD7891-2’s THD are measured with an input frequency of 10␣ kHz. The AD7891-2’s SNR is
evaluated with an input frequency of 100␣ kHz.
3This 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 357␣ kSPS.
4See Terminology.
5Sample tested during initial release and after any redesign or process change that may affect this parameter.
6REF IN must be buffered before being applied to VINXB.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS*
(TA = +25°C unless otherwise noted)
VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7␣ V
Analog Input Voltage to AGND
AD7891-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 17␣ V
AD7891-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . –5 V, +10␣ V
Reference Input Voltage to AGND . . . . –0.3 V to VDD + 0.3␣ V
Digital Input Voltage to DGND . . . . . . –0.3 V to VDD + 0.3 V
Digital Output Voltage to DGND . . . . . –0.3 V to VDD + 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
θJA 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
θJA 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
REV. A
–3–
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