參數(shù)資料
型號(hào): AD7709BR
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: 16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
中文描述: 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO20
封裝: PLASTIC, SOIC-24
文件頁(yè)數(shù): 3/17頁(yè)
文件大?。?/td> 248K
代理商: AD7709BR
–3–
REV. PrA J anuary 2001
AD7709
PRELIMINARY TECHNICAL DATA
L OGIC INPUT S
All Inputs Except SCLK and X T AL1
V
INL
, Input Low Voltage
V
INL
, Input Low Voltage
V
INH
, Input High Voltage
SCLK Only (Schmitt T riggered Input)
V
T (+)
V
T (-)
V
T (+)-
V
T (-)
V
T (+)
V
T (-)
V
T (+)-
V
T (-)
X T AL 1 Only
V
INL
, Input Low Voltage
V
INH
, Input High Voltage
V
INL
, Input Low Voltage
V
INH
, Input High Voltage
Input Currents
Input Capacitance
0.8
0.4
2.0
V max.
V max.
V min.
V
DD
= 5V
V
DD
= 3V
V
DD
= 3V or 5V
1.4/3
0.8/1.4
0.4/0.85
0.95/2.5
0.4/1.1
0.4/0.85
V min/V max V
DD
= 5V
V min/V max V
DD
= 5V
V min/V max V
DD
= 5V
V min/V max V
DD
= 3V
V min/V max V
DD
= 3V
V min/V max V
DD
= 3V
0.8
3.5
0.4
2.5
± 10
10
V max.
V min.
V max.
V min.
μA max.
pF typ.
V
DD
= 5V
V
DD
= 5V
V
DD
= 3V
V
DD
= 3V
V
IN
= 0V or V
DD
All Digital Inputs
L OGIC OUT PUT S (Excluding X T AL 2)
V
OH
, Output High Voltage
V
OL
, Output Low Voltage
V
OH
, Output High Voltage
V
OL
, Output Low Voltage
Floating State L eakage C urrent
Floating State Output Capacitance
Data Output Coding
V
DD
- 0.6
0.4
4
0.4
± 10
± 10
Binary
Offset Binary
V min.
V max.
V min.
V max.
uA max.
pF typ.
V
DD
= 3V, I
SOURCE
= 100μA
V
DD
= 3V, I
SINK
= 100μA
V
DD
= 5V, I
SOURCE
= 200μA
V
DD
= 5V, I
SINK
= 1.6mA
Unipolar Mode
Bipolar Mode
E X C IT AT ION C URRE NT SOURC E S
I1 and I2 Output Current
I3 Output Current
Initial T olerance at 25°C
D rift
Initial Current Matching at 25°C
Drift Matching
Line Regulation (V
DD
)
L oad Regulation
Output C ompliance
200
25
± 10
20
± 1
1
T BD
T BD
AV
DD
-0.5
μA nom.
μA nom.
% typ.
ppm/°C typ.
%
ppm/°C typ.
nA/V max.
nA/V max.
V max.
Matching between I1 and I2
V
DD
= 5V±10%
L ow-Side Power Switches (SW1 and SW2)
Ron
5
7
20
typ
typ
mA max
V
DD
= 5V
V
DD
= 3V
Per Switch
Allowable C urrent
SY ST E M C AL IBRAT ION
F ull-Scale C alibration L imit
Zero-Scale C alibration L imit
Input Span
1.05 X FS
-1.05 X FS
0.8 X FS
2.1 X FS
V max.
V min.
V min.
V max.
ST ART UP T IME
F rom Power-On
From Idle Mode
From Power-Down Mode
500
1
1
500
msec typ.
msec. typ.
msec. typ.
msec. typ.
Osc. powered down
POWE R RE QU IRE M E NT S
Power Supply Voltages
V
DD
- GND
2.7/3.6
4.5/5.5
V min/max
V min/max
V
DD
= 3V nom.
V
DD
= 5V nom.
PARAME T E R
B Grade
Units
T est Conditions
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