Datasheet

k
i
ii V 0 for k i
i
I
Y
V
= ¹
=
H
L
W
R
TOTAL
C
L
C
H
C
W
TPL0102
SLIS134B –MARCH 2011– REVISED AUGUST 2011 www.ti.com
ELECTRICAL CHARACTERISTICS
V
DD
= 2.7V to 5.5V, V
SS
= 0V, V
H
= V
DD
, V
L
= GND, T
A
= –40°C to 85°C (unless otherwise noted). Typical values are at V
DD
=
5V, T
A
= 25°C (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
End-to-end Resistance
R
TOT
(Between H and L TPL0102-100 80 100 120 kΩ
Terminals)
R
H
, R
L
Terminal resistance 60 200 Ω
R
W
Wiper resistance 25 100 Ω
C
H
, C
L
(1)(2)
Terminal capacitance 22 pF
C
W
(1)(2)
Wiper capacitance 16 pF
V
H
= V
SS
to V
DD
, V
L
= Floating
Terminal Leakage
I
LKG
OR 0.1 1 µA
Current
V
L
= V
SS
to V
DD
, V
H
= Floating
Resistance temperature
TC
R
Input Code = 0x80h 92 ppm/°C
coefficient
Channel-to-channel
R
TOT,MATCH
0.1 %
resistance match
Voltage Divider Mode
INL
(3)(4)
Integral non-linearity –0.5 0.5 LSB
DNL
(3)(5)
Differential non-linearity –0.25 0.25 LSB
ZS
ERROR
(6)(7)
Zero-scale error 0 0.1 2 LSB
FS
ERROR
(6)(8)
Full-scale error –2 –0.1 0 LSB
Channel-to-Channel Wiper at the same tap position, same voltage at all H
V
MATCH
(6)(9)
–2 2 LSB
matching and same voltage at all L terminals
Ratiometric
TC
V
Wiper set at mid-scale 4 ppm/°C
temperature coefficient
Wiper set at
BW Bandwidth TPL0102-100 mid-scale 229 kHz
C
LOAD
= 10 pF
T
SW
Wiper setting time TPL0102-100 3.6 µS
V
H
= 1 V
RMS
at 1 kHz,
Total harmonic
THD V
L
= (V
DD
– V
SS
)/2, TPL0102-100 0.03 %
distortion
Measurement at W
f
H
= 1 kHz,
X
TALK
Cross talk V
L
= GND, –82 dB
Measurement at W
(1) Terminal and Wiper Capacitance extracted from self admittance of three port network measurement
(2) Digital Potentiometer Macromodel
(3) LSB = (V
MEAS[code 255]
– V
MEAS[code 0]
) / 255
(4) INL = ((V
MEAS[code x]
– V
MEAS[code 0]
) / LSB) - [code x]
(5) DNL = ((V
MEAS[code x]
– V
MEAS[code x-1]
) / LSB) – 1
(6) IDEAL_LSB = (V
H
-V
L
) / 256
(7) ZS
ERROR
= V
MEAS[code 0]
/ IDEAL_LSB
(8) FS
ERROR
= [(V
MEAS[code 255]
– (V
H
-V
L
)) / IDEAL_LSB] + 1
(9) V
MATCH
= (V
MEAS_A[code x]
– V
MEAS_B[code x]
) / IDEAL_LSB
6 Copyright © 2011, Texas Instruments Incorporated