7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
|
MIN |
MAX |
UNIT |
VDD |
Supply voltage |
VDD to GND |
–0.3 |
7 |
V |
IH, IL, IW |
Continuous current |
|
±5 |
mA |
VI |
Digital input pins (SDA, SCL) |
–0.3 |
VDD + 0.3 |
V |
Potentiometer pins (H, W) |
–0.3 |
VDD + 0.3 |
TJ(MAX) |
Maximum junction temperature |
|
130 |
°C |
Tstg |
Storage temperature |
–65 |
150 |
°C |
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
7.5 Electrical Characteristics
Typical values are specified at 25°C and VDD = 3.3 V (unless otherwise noted)
PARAMETER |
TEST CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
RTOTAL |
End-to-end resistance |
|
8 |
10 |
12 |
kΩ |
RH |
Terminal resistance |
|
|
100 |
200 |
Ω |
RW |
Wiper resistance |
|
|
35 |
100 |
Ω |
CH |
Terminal capacitance |
|
|
10 |
|
pF |
CW |
Wiper capacitance |
|
|
11 |
|
pF |
TCR |
Resistance temperature coefficient |
|
|
22 |
|
ppm/°C |
IDD(STBY) |
VDD standby current |
–40°C to +105°C |
|
|
0.5 |
µA |
–40°C to +125°C |
|
|
1.5 |
IIN-DIG |
Digital pins leakage current (SCL, SDA Inputs) |
|
–2.5 |
|
2.5 |
µA |
SERIAL INTERFACE SPECS (SDA, SCL) |
VIH |
Input high voltage |
|
0.7 × VDD |
|
VDD |
V |
VIL |
Input low voltage |
|
0 |
|
0.3 × VDD |
V |
VOL |
Output low voltage |
SDA Pin, IOL = 4 mA |
|
|
0.4 |
V |
CIN |
Pin capacitance |
SCL, SDA Inputs |
|
7 |
|
pF |
VOLTAGE DIVIDER MODE (VH = VDD, VW = Not Loaded) |
INL(3)(1) |
Integral non-linearity |
|
–0.5 |
|
0.5 |
LSB |
DNL(4)(1) |
Differential non-linearity |
|
–0.25 |
|
0.25 |
LSB |
ZSERROR(5)(2) |
Zero-scale error |
|
0 |
0.75 |
1.5 |
LSB |
FSERROR(6)(2) |
Full-scale error |
|
–1.5 |
–0.75 |
0 |
LSB |
TCV |
Ratiometric temperature coefficient |
Wiper set at mid-scale |
|
4 |
|
ppm/°C |
BW |
Bandwidth |
Wiper set at mid-scale, CLOAD = 10 pF |
|
2862 |
|
kHz |
TSW |
Wiper settling time |
See Figure 10 |
|
0.152 |
|
µs |
THD+N |
Total harmonic distortion |
VH = 1 VRMS at 1 kHz, measurement at W |
|
0.03 |
|
% |
RHEOSTAT MODE (VH = VDD, VW = Not Loaded) |
|
RINL(9)(7) |
Rheostat mode integral non-linearity |
|
–1 |
|
1 |
LSB |
RDNL(10)(7) |
Rheostat mode differential non-linearity |
|
0.5 |
|
0.5 |
LSB |
ROFFSET(11)(8) |
Rheostat-mode zero-scale error |
|
0 |
0.75 |
2 |
LSB |
(1) LSB = (VMEAS[code 127] – VMEAS[code 0]) / 127
(2) IDEAL_LSB = VH/ 128
(3) INL = ((VMEAS[code x] – VMEAS[code 0]) / LSB) – [code x]
(4) DNL = ((VMEAS[code x] – VMEAS[code x-1]) / LSB) – 1
(5) ZSERROR = VMEAS[code 0] / IDEAL_LSB
(6) FSERROR = [(VMEAS[code 127] – VH) / IDEAL_LSB] + 1
(7) RLSB = (RMEAS[code 127] – RMEAS[code 0]) / 127
(8) IDEAL_RLSB = RTOT / 128
(9) RINL = ( (RMEAS[code x] – RMEAS[code 0]) / RLSB) – [code x]
(10) RDNL = ( (RMEAS[code x] – RMEAS[code x–1]) / RLSB ) – 1
(11) ROFFSET = RMEAS[code 0] / IDEAL_RLSB