參數(shù)資料
型號(hào): AD7716BP
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: LC2MOS 22-Bit Data Acquisition System
中文描述: 4-CH 22-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 3/16頁
文件大?。?/td> 430K
代理商: AD7716BP
REV. A
–3–
AD7716
Table I. Typical Usable Dynamic Range, RMS Noise and Filter Settling Time vs. Filter Cutoff Frequency
Programmed Cutoff
Frequency (Hz)
584
292
146
73
36.5
Output Update
Rate (Hz)
2232
1116
558
279
140
Usable Dynamic
Range (dB)
99
102
105
108
111
RMS Noise
(
m
V)
21
14
10
7
5
Filter Settling Time to
6
0.0007% FS (ms)
1.35
2.7
5.4
10.8
21.6
Absolute Group
Delay (ms)
0.675
1.35
2.7
5.4
10.8
N
0
1
2
3
4
NOTE
Usable Dynamic Range is defined as the ratio of the rms full-scale reading (sine wave input) to the rms noise of the converter.
CONTROL REGISTER TIMING CHARACTERISTICS
1, 2
(AV
DD
= DV
DD
= +5 V
6
5%; AV
SS
= –5 V
6
5%; AGND =
DGND = 0 V; f
CLKIN
= 8 MHz; Input Levels: Logic 0 = 0 V, Logic 1 = DV
DD
; unless otherwise noted)
Limit at T
MIN
, T
MAX
(B Version)
Parameter
Units
Conditions/Comments
t
1
t
2
t
3
t
4
t
5
t
6
1/f
CLKIN
77
30
20
10
20
ns min
ns min
ns min
ns min
ns min
ns min
SCLK Period
SCLK Width
TFS
Setup Time
SDATA Setup Time
SDATA Hold Time
TFS
Hold Time
NOTES
1
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
See Figure 2.
3
CLKIN Duty Cycle range is 40% to 60%.
200
μ
A
I
OH
+2.1V
TO
OUTPUT
PIN
1.6mA
C
L
50pF
I
OL
Figure 1. Load Circuit for Access Time and Bus Relinquish Time
DB4
(DB12)
DB3
(DB11)
DB2
(DB10)
DB1
(DB9)
DB0
(DB8)
DB5
(DB13)
DB6
(DB14)
DB7
(DB15)
t
2
SCLK (I)
SDATA (I)
TFS (I)
t
2
t
5
t
4
t
3
t
6
t
1
Figure 2. Control Register Timing Diagram
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