ADN2850(RevB) Просмотр технического описания (PDF) - Analog Devices
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ADN2850 Datasheet PDF : 20 Pages
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ADN2850–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS 25 k⍀, 250 k⍀ VERSIONS
(VDD = 3 V to 5.5 V and –40؇C < TA < +85؇C,
unless otherwise noted.)1
Parameter
Symbol Conditions
Min Typ2 Max Unit
DC CHARACTERISTICS RHEOSTAT MODE (Specifications apply to all RDACs)
Resistor Differential Nonlinearity3
R-DNL
RWB
Resistor Integral Nonlinearity3
R-INL
RWB
Resistance Temperature Coefficient ⌬RWB/⌬T
Wiper Resistance
RW
VDD = 5 V, IW = 100 µA,
Code = Half-scale
VDD = 3 V, IW = 100 µA,
Code = Half-scale
Channel Resistance Matching
Nominal Resistor Tolerance
⌬RWB/RWB Ch 1 and 2 RWB, Dx = 3FFH
⌬RWB
RESISTOR TERMINALS
Terminal Voltage Range4
Capacitance5 Bx
Capacitance5 Wx
Common-Mode Leakage Current6
VW, B
CB
CW
ICM
f = 1 MHz, measured to GND,
Code = Half-scale
f = 1 MHz, measured to GND,
Code = Half-scale
VW = VB = VDD/2
DIGITAL INPUTS AND OUTPUTS
Input Logic High
VIH
Input Logic Low
VIL
Input Logic High
VIH
Input Logic Low
VIL
Input Logic High
VIH
Input Logic Low
VIL
Output Logic High (SDO, RDY)
VOH
Output Logic Low
VOL
Input Current
IIL
Input Capacitance5
CIL
With respect to GND, VDD = 5 V
With respect to GND, VDD = 5 V
With respect to GND, VDD = 3 V
With respect to GND, VDD = 3 V
With respect to GND,
VDD = +2.5 V, VSS = –2.5 V
With respect to GND,
VDD = +2.5 V, VSS = –2.5 V
RPULL-UP = 2.2 kΩ to 5 V
IOL = 1.6 mA, VLOGIC = 5 V
VIN = 0 V or VDD
POWER SUPPLIES
Single-Supply Power Range
Dual-Supply Power Range
Positive Supply Current
Positive Supply Current
Programming Mode Current
Read Mode Current7
Negative Supply Current
Power Dissipation8
Power Supply Sensitivity
VDD
VDD/VSS
IDD
IDD
IDD(PG)
IDD(XFR)
ISS
PDISS
PSS
VSS = 0 V
VIH = VDD or VIL = GND,
TA = 25oC
VIH = VDD or VIL = GND
VIH = VDD or VIL = GND
VIH = VDD or VIL = GND
VIH = VDD or VIL = GND,
VDD = +2.5 V, VSS = –2.5 V
VIH = VDD or VIL = GND
∆VDD = 5 V ± 10%
CURRENT MONITOR TERMINALS
Current Sink at V19
I1
Current Sink at V2
I2
DYNAMIC CHARACTERISTICS5, 10
Resistor Noise Spectral Density
Analog Crosstalk (CW1/CW2)
eN_WB
CT
RWB_FS = 25 kΩ/250 kΩ, f = 1 kHz
VB1 = VB2 = 0 V, Measured VW1 with
VW2 = 100 mV p-p @ f = 100 kHz,
Code 1 = Code 2 = 200H
–2
–4
35
50
200
0.1
–30
VSS
11
80
0.01
2.4
2.1
2.0
4.9
5
3.0
± 2.25
2
3.5
35
0.3 3
3.5
18
0.002
0.0001
20/64
–65
+2
+4
100
+30
VDD
±2
0.8
0.6
0.5
0.4
± 2.25
5.5
± 2.75
4.5
6.0
9
6.0
50
0.01
10
10
LSB
LSB
ppm/°C
Ω
Ω
%
%
V
pF
pF
µA
V
V
V
V
V
V
V
V
µA
pF
V
V
µA
µA
mA
mA
µA
µW
%/%
mA
mA
nV/√Hz
dB
–2–
REV. B
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