AD7841 Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
componentes Descripción
Fabricante
AD7841 Datasheet PDF : 13 Pages
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AD7841–SPECIFICATIONS (VCC = 5 V ؎ 5%; VDD = 15 V ؎ 10%; VSS = –15 V ؎ 10%; GND = DUTGND =
0 V; RL = 5 k⍀ and CL = 50 pF to GND, TA1 = TMIN to TMAX, unless otherwise noted)
Parameter
A
B
Unit
Test Conditions/Comments
ACCURACY
Resolution
14
14
Relative Accuracy
±4
±2
Differential Nonlinearity
–0.9/2
±1
Zero-Scale Error
±8
±8
Full-Scale Error
±8
±8
Gain Error
±2
±2
Gain Temperature Coefficient2 0.5
0.5
DC Crosstalk2
10
10
120
120
Bits
LSB max
LSB max
LSB max
LSB max
LSB typ
ppm FSR/°C typ
ppm FSR/°C max
µV max
Guaranteed Monotonic Over Temperature for All
Grades
VREF(+) = +5 V, VREF(–) = –5 V. Typically within
±2 LSB
VREF(+) = +5 V, VREF(–) = –5 V. Typically within
±2 LSB
VREF(+) = +5 V, VREF(–) = –5 V
See Terminology. Typically 75 µV
REFERENCE INPUTS2
DC Input Impedance
100
100
MΩ typ
Input Current
±1
±1
µA max
Per Input. Typically ± 0.03 µA
VREF(+) Range
VREF(–) Range
[VREF(+) – VREF(–)]
0/5
0/5
V min/max
–5/0
–5/0
V min/max
2/10
2/10
V min/max
For Specified Performance. Can Go as Low as 0 V,
but Performance Not Guaranteed
DUTGND INPUTS2
DC Input Impedance
Max Input Current
Input Range3
60
± 0.3
–2/+2
60
± 0.3
–2/+2
kΩ typ
mA typ
V min/max
Per Input
OUTPUT CHARACTERISTICS2
Output Voltage Swing
Short Circuit Current
VSS + 2.5 V to
VDD – 2.5 V
15
Resistive Load
5
Capacitive Load
50
DC Output Impedance
0.5
VSS + 2.5 V to
VDD – 2.5 V
15
5
50
0.5
V typ
mA max
kΩ min
pF max
Ω max
VOUT = 2 × (VREF(–) + [VREF(+) – VREF(–)] × D)
– VDUTGND
To 0 V
To 0 V
DIGITAL INPUTS2
VINH, Input High Voltage
VINL, Input Low Voltage
IINH, Input Current
@ 25°C
TMIN to TMAX
CIN, Input Capacitance
POWER REQUIREMENTS4
VCC
VDD
VSS
Power Supply Sensitivity2
∆Full Scale/∆VDD
∆Full Scale/∆VSS
ICC
IDD
ISS
2.4
2.4
V min
0.8
0.8
V max
±1
±1
µA max
± 10
± 10
µA max
10
10
pF max
4.75/+5.25
15 V ± 10%
–15 V ± 10%
4.75/+5.25
15 V ± 10%
–15 V ± 10%
V min/max
V min/max
V min/max
90
90
dB typ
90
90
dB typ
0.5
0.5
mA max
10
10
mA max
10
10
mA max
Total for All Pins
For Specified Performance
For Specified Performance
For Specified Performance
VINH = VCC, VINL = GND. Dynamic Current
Outputs Unloaded. Typically 8 mA
Outputs Unloaded. Typically 8 mA
NOTES
1Temperature range for A and B Versions: –40°C to +85°C.
2Guaranteed by characterization. Not production tested.
3
See DUTGND Voltage Range section.
4The AD7841 is functional with power supplies of ± 12 V ± 10% with reduced output range. Output amplifier requires 2.5 V of head room at the bottom and top ends
of the transfer for function. At 12 V supplies it is recommended to restrict the reference range to ± 4 V.
Specifications subject to change without notice.
–2–
REV. B
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