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參數資料
| 型號： | AD7883 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | LC2MOS 12-Bit, 3.3 V Sampling ADC |
| 中文描述： | LC2MOS 12位，3.3伏采樣ADC |
| 文件頁數： | 3/12頁 |
| 文件大?。?/td> | 349K |
| 代理商： | AD7883 |
AD7883
REV. 0
–3–
TIMING CHARACTERISTICS
1
Limit at +25
8
C
(All Versions)
Limit at T
MIN
, T
MAX
(All Versions)
Parameter
Units
Conditions/Comments
t
1
t
2
t
3
t
4
t
5
t
6
t
72
t
83
50
200
0
0
0
110
100
5
90
60
200
0
0
0
150
140
5
90
ns min
ns max
ns min
ns min
ns min
ns min
ns max
ns min
ns max
CONVST
Pulse Width
CONVST
to
BUSY
Falling Edge
BUSY
to
CS
Setup Time
CS
to
RD
Setup Time
CS
to RD Hold Time
RD
Pulse Width
Data Access Time after
RD
Bus Relinquish Time after
RD
NOTES
1
Timing specifications in
bold
print are 100% production tested. All other times are sample tested at +25
°
C to ensure compliance. All input signals are specified with
tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage level of 1.6 V.
2
t
7
is measured with the load circuit of Figure 2 and defined as the time required for an output to cross 0.8 V or 2.4 V.
3
t
is derived from the measured time taken by the data outputs to change by 0.5 V when loaded with the circuit of Figure 2. The measured number is then extrapo-
lated back to remove the effects of charging the 50 pF capacitor. This means that the time, t
8
, quoted in the timing characteristics is the true bus relinquish time of
the part and as such is independent of external bus loading capacitances.
(V
SS
= +3 V to +3.6 V, V
REF
= V
DD
, AGND = DGND = 0 V)
DB0 – DB11
DATA
VALID
t
1
t
CONVERT
t
2
t
3
t
4
t
5
t
6
t
7
t
8
CONVST
BUSY
CS
RD
THREE-STATE
TRACK/HOLD
GOES INTO HOLD
Figure 1. Timing Diagram
TO
OUTPUT
PIN
0.8mA
+1.6V
200
μ
A
50pF
Figure 2. Load Circuit for Access and Relinquish Time
Table I. Truth Table
CS
CONVT
RD
Function
1
1
0
0
1
j
1
1
X
1
0
1
Not Selected
Start Conversion
g
Enable ADC Data
Data Bus Three Stated
ORDERING GUIDE
Model
Temperature Range Package Option*
AD7883BN
AD7883BR
–40
°
C to +85
°
C
–40
°
C to +85
°
C
N-24
R-24
*N = Plastic DIP; R = SOIC (Small Outline Integrated Circuit).
相關PDF資料 |
PDF描述 |
|---|---|
| AD7883BN | LC2MOS 12-Bit, 3.3 V Sampling ADC |
| AD7883BR | LC2MOS 12-Bit, 3.3 V Sampling ADC |
| AD7884 | LC2MOS 16-Bit, High Speed Sampling ADCs |
| AD7884AN | LC2MOS 16-Bit, High Speed Sampling ADCs |
| AD7884AP | LC2MOS 16-Bit, High Speed Sampling ADCs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7883BN | 制造商:Analog Devices 功能描述:ADC Single SAR 50ksps 12-bit Parallel 24-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:12 BIT A/D CONVERTER IC - Bulk |
| AD7883BR | 制造商:Analog Devices 功能描述:ADC Single SAR 50ksps 12-bit Parallel 24-Pin SOIC W 制造商:Analog Devices 功能描述:ADC SGL SAR 50KSPS 12-BIT PARALLEL 24SOIC W - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:12 BIT A/D CONVERTER IC - Bulk |
| AD7883BR-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 50ksps 12-bit Parallel 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 50KSPS 12-BIT PARALLEL 24SOIC W - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:12 BIT A/D CONVERTER IC - Tape and Reel |
| AD7884AP | 制造商:Analog Devices 功能描述:ADC Single 2-Step Flash 166ksps 16-bit Parallel 44-Pin PLCC 制造商:Rochester Electronics LLC 功能描述:16-BIT PARAL.SAMPL.ADC IC - Bulk |
| AD7884AP-REEL | 制造商:Analog Devices 功能描述:ADC Single 2-Step Flash 166ksps 16-bit Parallel 44-Pin PLCC T/R 制造商:Rochester Electronics LLC 功能描述:16-BIT PARAL.SAMPL ADC IC - Tape and Reel |
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