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參數(shù)資料
| 型號(hào)： | AD7992BRM-0 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類(lèi)： | ADC |
| 英文描述： | 2-Channel, 12-Bit ADC with I2C Compatible Interface in 10-Lead MSOP |
| 中文描述： | 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10 |
| 封裝： | MO-187-BA, MSOP-10 |
| 文件頁(yè)數(shù)： | 3/21頁(yè) |
| 文件大小： | 266K |
| 代理商： | AD7992BRM-0 |
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–3–
AD7992–SPECIFICATIONS
1
REV. PrH
PRELIMINARY TECHNICAL DATA
(
V
DD
= +2.7 V to +5.5 V, unless otherwise noted ; REF
IN
= 2.5 V; f
SCL
= 3.4 MHz unless
otherwise noted; T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Parameter
B Version
1
Units
Test Conditions/Comments
CONVERSION RATE
Conversion Time
Track/Hold Acquisition Time
See Interface Section
2
TBD
TBD
3.4
13
79
μs typ
ns max
ns max
kSPS max
kSPS max
kSPS max
Full-Scale step input
Sine wave input <= 30 KHz
Standard mode 100 kHz
Fast Mode 400 kHz
High-Speed Mode 3.4 MHz
Throughput Rate
POWER REQUIREMENTS
V
DD
I
DD
Peak Current
Power Down Mode, Interface Inactive
Interface Active
2.7/5.5 V
min/max
Digital Inputs = 0 V or V
DD
Peak Current during conversion
V
DD
= 3 / 5 V.
V
DD
= 3 / 5 V. 400 kHz SCL
V
DD
= 3 / 5 V. 3.4 MHz SCL
TBD
0.2/0.6
0.05/0.2
0.3/0.8
μA max
μA max
mA max
mA max
Operating, Interface Inactive
0.2/0.8
0.05/0.3
0.15/0.35
0.6/1.8
mA max
mA max
mA max
mA max
V
DD
= 3 / 5 V. 400 kHz SCL
V
DD
= 3 / 5 V. 3.4 MHz SCL
V
DD
= 3 / 5 V. 400 kHz SCL
V
DD
= 3 / 5 V. 3.4 MHz SCL
Interface Active
P
S
S
P
t
6
t
4
t
1
t
3
t
5
t
8
t
2
t
11
t
12
t
6
SCL
SDA
t
7
t
9
t
10
S = START CONDITION
P = STOP CONDITION
I
2
C TIMING SPECIFICATIONS
1
(
V
DD
= +2.7 V to +5.5 V, unless otherwise noted ; REF
IN
= 2.5 V; unless otherwise noted; T
A
=
T
MIN
to T
MAX
, unless otherwise noted. C
b
refers to the Capacitive load on the bus line.)
AD7992
Limit at T
MIN
, T
MAX
MIN
Parameter Conditions
MAX
Unit
Description
f
SCL
2
Standard Mode
Fast Mode
High-Speed Mode, C
B
= 100pF max
High-Speed Mode, C
B
= 400pF max
Standard Mode
Fast Mode
High-Speed Mode, C
B
= 100pF max 60
High-Speed Mode, C
B
= 400pF max 120
Standard Mode
Fast Mode
High-Speed Mode, C
B
= 100pF max 160
High-Speed Mode, C
B
= 400pF max 320
Standard Mode
Fast Mode
High-Speed Mode
100
400
3.4
1.7
kHz
kHz
MHz
MHz
μ
s
μ
s
ns
ns
μ
s
μ
s
ns
ns
ns
ns
ns
Serial Clock Frequency
t
1
4
0.6
t
HIGH
, SCL High Time
t
2
4.7
1.3
t
LOW
, SCL Low Time
t
3
250
100
10
-
-
-
t
SU;DAT
, Data Setup Time
NOTES
1
Temperature ranges as follows: B Version: –40°C to +85°C.
2
See Terminology.
3
Sample tested @ +25°C to ensure compliance.
4
See POWER VERSUS THROUGHPUT RATE section.
Specifications subject to change without notice.
Figure 1. Two-Wire Serial Interface Timing Diagram
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