Data Sheet
ADN2850
Rev. E | Page 3 of 28
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—25 k, 250 k VERSIONS
VDD = 2.7 V to 5.5 V, VSS = 0 V; VDD = 2.5 V, VSS = 2.5 V, VA = VDD, VB = VSS, 40°C < TA < +85°C, unless otherwise noted. These
specifications apply to versions with a date code 1209 or later.
Table 1.
Parameter
Symbol
Conditions
Min
Max
Unit
DC CHARACTERISTICS—RHEOSTAT
MODE (All RDACs)
Resolution
N
10
Resistor Differential Nonlinea
rity2R-DNL
RWB
1
+1
LSB
Resistor Integral Nonlineari
ty2R-INL
RWB
2
+2
LSB
Nominal Resistor Tolerance
RWB/RWB
Code = full scale
8
+8
%
Resistance Temperature Coeffici
ent3(RWB/RWB)/
T × 106
Code = full scale
35
ppm/°C
Wiper Resistance
RW
Code = half scale
VDD = 5 V
30
60
VDD = 3 V
50
Nominal Resistance Mat
ch3RWB1/RWB2
Code = full scale
±0.1
%
RESISTOR TERMINALS
VB, VW
VSS
VDD
V
CB
f = 1 MHz, measured to GND,
code = half-scale
11
pF
CW
f = 1 MHz, measured to GND,
code = half-scale
80
pF
Common-Mode Leakage Curren
t3, 4ICM
VW = VDD/2
0.01
±1
A
DIGITAL INPUTS AND OUTPUTS
High
VIH
VDD = 5 V
2.4
V
VDD = 2.7 V
2.1
V
VDD = +2.5 V, VSS = 2.5 V
2.0
V
Low
VIL
VDD = 5 V
0.8
V
VDD = 2.7 V
0.6
V
VDD = +2.5 V, VSS = 2.5 V
0.5
V
Output Logic High (SDO, RDY)
VOH
4.9
V
Output Logic Low
VOL
0.4
V
Input Current
IIL
VIN = 0 V or VDD
±1
A
CIL
5
pF
POWER SUPPLIES
Single-Supply Power Range
VDD
VSS = 0 V
2.7
5.5
V
Dual-Supply Power Range
VDD/VSS
±2.25
±2.75
V
Positive Supply Current
IDD
VIH = VDD or VIL = GND
2
5
A
Negative Supply Current
ISS
VDD = +2.5 V, VSS = 2.5 V
VIH = VDD or VIL = GND
4
2
A
EEMEM Store Mode Current
IDD (store)
VIH = VDD or VIL = GND,
VSS = GND, ISS ≈ 0
2
mA
ISS (store)
VDD = +2.5 V, VSS = 2.5 V
2
mA
EEMEM Restore Mode Curre
nt5IDD (restore)
VIH = VDD or VIL = GND,
VSS = GND, ISS ≈ 0
320
A
ISS (restore)
VDD = +2.5 V, VSS = 2.5 V
320
A
PDISS
VIH = VDD or VIL = GND
10
30
W
Power Supply Sensitiv
ity3PSS
VDD = 5 V ± 10%
0.006
0.01
%/%