參數(shù)資料
型號(hào)： AD7716
廠商： Analog Devices, Inc.
英文描述： 22-Bit Data Acquisition System(LC2MOS 22位數(shù)據(jù)采集系統(tǒng))
中文描述： 22位數(shù)據(jù)采集系統(tǒng)（LC2MOS 22位數(shù)據(jù)采集系統(tǒng)）
文件頁(yè)數(shù)： 2/16頁(yè)
文件大?。?/td> 439K
代理商： AD7716
AD7716–SPECIFICATIONS
1, 2
(f
CLKIN
= 8 MHz; MODE Pin Is High (Slave Mode Operation); AV
DD
= DV
DD
= +5 V
6
5%; AV
SS
= –5 V
6
5%; AGND = DGND = 0 V; V
REF
= 2.5 V; Filter Cutoff = 146 Hz; Noise Measurement Bandwidth = 146 Hz; A
IN
Source
Resistance = 750
V
2
with 1 nF to AGND at each A
IN
. T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Parameter
B Version
Units
Test Conditions/Comments
STATIC PERFORMANCE
Resolution
Integral Linearity Error
22
0.003
0.006
1
0.5
30
0.2
0.1
4
11
Bits
% FSR typ
% FSR max
% FSR max
% FSR max
μ
V/
°
C typ
% FSR max
% FSR max
μ
V/
°
C typ
μ
V rms max
Guaranteed No Missed Codes to 21 Bits
3
Gain Error
Gain Match Between Channels
Gain TC
Offset Error
Offset Match Between Channels
Offset TC
Noise
See Table I for Typical Noise Performance vs. Programmed
Cutoff Frequency
DYNAMIC PERFORMANCE
Sampling Rate
Output Update Rate
Filter Cutoff Frequency
Settling Time
Usable Dynamic Range
4
Total Harmonic Distortion
f
CLKIN
/14
f
CLKIN
/(14
3
256
3
2
N
)
f
CLKIN
/(3.81
3
14
3
256
3
2
N
)
(3
3
14
3
256
3
2
N
/f
CLKIN
)
See Table I
–90
–100
(3
3
14
3
256
3
2
N
)/2f
CLKIN
10
–85
570 kHz for f
CLKIN
= 8 MHz
N Is Decimal Equivalent of FC2, FC1, FC0 in Control Register
dB typ
dB typ
Input Frequency = 35 Hz
A
IN
=
±
10 mV p-p
Absolute Group Delay
3
Differential Group Delay
3
Channel-to-Channel Isolation
ns typ
dB typ
Feedthrough from Any One Channel to the Other Three, with
35 Hz Full-Scale Sine Wave Applied to that Channel
ANALOG INPUT
Input Range
Input Capacitance
Input Bias Current
±
2.5
10
1
Volts
pF typ
nA typ
LOGIC INPUTS
V
INH
, Input High Voltage
V
INL
, Input Low Voltage
I
IN
, Input Current
SDATA,
RFS
TFS
All Other Inputs
C
IN
, Input Capacitance
3
LOGIC OUTPUTS
V
OH
, Output High Voltage
V
OL
, Output Low Voltage
2.4
0.8
V min
V max
+10/-130
+10/-650
±
10
10
μ
A max
μ
A max
μ
A max
pF max
Internal 50 k
Pull-Up Resistors
Internal 10 k
Pull-Up Resistor
2.4
0.4
V min
V max
|I
OUT
|
≤
40
μ
A
|I
OUT
|
≤
1.6 mA
POWER SUPPLIES
Reference Input
AV
DD
DV
DD
AV
SS
I
DD
I
SS
Power Consumption
Power Supply Rejection
5
2.4/2.6
4.75/5.25
4.75/5.25
–4.75/–5.25
7.5
2.5
50
–70
V min/V max
V min/V max
V min/V max
V min/V max
mA max
mA max
mW max
dB typ
4.8 mA typ
1.8 mA typ
35 mW typ
NOTES
1
Operating temperature ranges as follows : B Version; –40
°
C to +85
°
C.
2
The A
pins present a very high impedance dynamic load which varies with clock frequency.
3
Guaranteed by design and characterization. Digital filter has linear phase.
4
Usable dynamic range is guaranteed by measuring noise and relating this to the full-scale input range.
5
100 mV p-p, 120 Hz sine wave applied to each supply.
Specifications subject to change without notice.
REV. A
–2–
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