AD7993(RevPrF) 查看數據表（PDF） - Analog Devices
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AD7993
(Rev.:RevPrF)
(Rev.:RevPrF)
Analog Devices
AD7993 Datasheet PDF : 27 Pages
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PRELIMINARY TECHNICAL DATA
AD7993–SPECIFICATIONS1 (VDD = +2.7 V to +5.5 V, unless otherwise noted ; REFIN = 2.5 V; fSCL = 3.4 MHz unless
otherwise noted; TA = TMIN to TMAX, unless otherwise noted.)
Parameter
CONVERSION RATE
Conversion Time
Track/Hold Acquisition Time
Throughput Rate
POWER REQUIREMENTS
VDD
IDD
Peak Current
Power Down Mode , Interface Inactive
Interface Active
B Version1
2
TBD
TBD
3.4
13
79
2.7/5.5 V
TBD
0.2/0.6
0.05/0.2
0.3/0.8
Units
µs typ
ns max
ns max
KSPS max
KSPS max
KSPS max
min/max
mA max
µA max
mA max
mA max
Test Conditions/Comments
See Interface Section
Full-Scale step input
Sine wave input <= 30 KHz
Standard mode 100 kHz
Fast Mode 400 kHz
High-Speed Mode 3.4 MHz
Digital Inputs = 0 V or VDD
Peak Current during conversion
VDD = 3 V/5 V.
VDD = 3 V/5 V 400 kHz SCL.
VDD = 3 V/5 V 3.4 MHz SCL.
Operating, Interface Inactive
Interface Active
0.06/0.15
0.3/0.6
0.15/0.35
0.6/1.4
NOTES
1Temperature ranges as follows: B Version: –40°C to +85°C.
2See Terminology.
3Sample tested @ +25°C to ensure compliance.
4See POWER VERSUS THROUGHPUT RATE section.
Specifications subject to change without notice.
t11
t12
t2
mA max
mA max
mA max
mA max
t6
VDD = 3 V/5 V 400 kHz SCL.
VDD = 3 V/5 V 3.4 MHz SCL.
VDD = 3 V/5 V 400 kHz SCL.
VDD = 3 V/5 V 3.4 MHz SCL.
SCL
t6
SDA
t7
P
S
t4
t3
t1
t5
t10
S
t8
t9
P
S = START CONDITION
P = STOP CONDITION
Figure 1. Two-Wire Serial Interface Timing Diagram
I C TIMING SPECIFICATIONS 2
1 (VDD = +2.7 V to +5.5 V, unless otherwise noted ; REFIN = 2.5 V; unless otherwise noted; TA =
TMIN to TMAX, unless otherwise noted..)
Parameter Conditions
AD7994/AD7993
Limit at TMIN, TMAX
MIN
MAX Unit Description
fSCL 2
t1
t2
t3
Standard Mode
Fast Mode
High-Speed Mode, CB = 100pF max
High-Speed Mode, CB = 400pF max
Standard Mode
4
Fast Mode
0.6
High-Speed Mode, CB = 100pF max 60
High-Speed Mode, CB = 400pF max 120
Standard Mode
4.7
Fast Mode
1.3
High-Speed Mode, CB = 100pF max 160
High-Speed Mode, CB = 400pF max 320
Standard Mode
250
Fast Mode
100
High-Speed Mode
10
100 kHz Serial Clock Frequency
400 kHz
3.4 MHz
1.7 MHz
µs tHIGH, SCL High Time
µs
ns
ns
µs tLOW, SCL Low Time
µs
ns
ns
-
ns tSU;DAT, Data Setup Time
-
ns
-
ns
REV. PrF
–5–
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