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AD7709 датащи(PDF) 3 Page - Analog Devices

номер детали AD7709
подробное описание детали  16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
PDF  17 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD7709 датащи(HTML) 3 Page - Analog Devices

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–3–
REV. PrA
January 2001
AD7709
PRELIMINARY TECHNICAL DATA
LOGIC INPUTS
All Inputs Except SCLK and XTAL1
VINL, Input Low Voltage
0.8
V max.
VDD = 5V
VINL, Input Low Voltage
0.4
V max.
VDD = 3V
VINH, Input High Voltage
2.0
V min.
VDD = 3V or 5V
SCLK Only (Schmitt Triggered Input)
VT(+)
1.4/3
V min/V max VDD = 5V
VT(-)
0.8/1.4
V min/V max VDD = 5V
VT(+)- VT(-)
0.4/0.85
V min/V max VDD = 5V
VT(+)
0.95/2.5
V min/V max VDD = 3V
VT(-)
0.4/1.1
V min/V max VDD = 3V
VT(+)-VT(-)
0.4/0.85
V min/V max VDD = 3V
XTAL1 Only
VINL, Input Low Voltage
0.8
V max.
VDD = 5V
VINH, Input High Voltage
3.5
V min.
VDD = 5V
VINL, Input Low Voltage
0.4
V max.
VDD = 3V
VINH, Input High Voltage
2.5
V min.
VDD = 3V
Input Currents
±10
µA max.
VIN = 0V or VDD
Input Capacitance
10
pF typ.
All Digital Inputs
LOGIC OUTPUTS (Excluding XTAL2)
VOH, Output High Voltage
VDD- 0.6
V min.
VDD = 3V, ISOURCE = 100µA
VOL, Output Low Voltage
0.4
V max.
VDD = 3V, ISINK = 100µA
VOH, Output High Voltage
4
V min.
VDD = 5V, ISOURCE = 200µA
VOL, Output Low Voltage
0.4
V max.
VDD = 5V, ISINK = 1.6mA
Floating State Leakage Current
±10
uA max.
Floating State Output Capacitance
±10
pF typ.
Data Output Coding
Binary
Unipolar Mode
Offset Binary
Bipolar Mode
EXCITATION CURRENT SOURCES
I1 and I2 Output Current
200
µA nom.
I3 Output Current
25
µA nom.
Initial Tolerance at 25°C
±10
% typ.
Drift
20
ppm/°C typ.
Initial Current Matching at 25°C
± 1
%
Matching between I1 and I2
Drift Matching
1
ppm/°C typ.
Line Regulation (VDD)
T B D
nA/V max.
VDD = 5V±10%
Load Regulation
T B D
nA/V max.
Output Compliance
AVDD-0.5
V max.
Low-Side Power Switches (SW1 and SW2)
Ron
5
Ω typ
VDD = 5V
7
Ω typ
VDD = 3V
Allowable Current
20
mA max
Per Switch
SYSTEM CALIBRATION
Full-Scale Calibration Limit
1.05 X FS
V max.
Zero-Scale Calibration Limit
-1.05 X FS
V min.
Input Span
0.8 X FS
V min.
2.1 X FS
V max.
START UP TIME
From Power-On
500
msec typ.
From Idle Mode
1
msec. typ.
From Power-Down Mode
1
msec. typ.
500
msec. typ.
Osc. powered down
POWER REQUIREMENTS
Power Supply Voltages
VDD - GND
2.7/3.6
V min/max
VDD = 3V nom.
4.5/5.5
V min/max
VDD = 5V nom.
PARAMETER
B Grade
Units
Test Conditions



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