CAT5136 Datasheet, PDF (5/11 Pages) ON Semiconductor – Digital Potentiometers (POTs) with 128 Taps and I2C Interface

CAT5136, CAT5137, CAT5138
TYPICAL PERFORMANCE CHARACTERISTICS
60
50
V_CC = 2.7 V
V_CC = 5.5 V
40
30
90
80
−40C
70
25C
60
90C
50
125C
40
20
30
10
Rheostat Configuration
20
T_A = +25C, R_POT = 50 kW
10
0
0
0 16 32 48 64 80 96 112 128
2
3
4
5
6
TAP POSITION
Figure 2. Resistance between R_W and R_L
V_CC (V)
Figure 3. Power Supply Current
1.0
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1.0
0
Potentiometer Configuration
T_A = +25C, R_POT = 10 kW
V_CC = 2.7 V
V_CC = 5.5 V
16 32 48 64 80 96 112 128
TAP POSITION
Figure 4. Integral Non−Linearity
1.0
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1.0
0
Potentiometer Configuration
V_CC = 2.7 V
V_CC = 5.5 V
16 32 48 64 80 96 112 128
TAP POSITION
Figure 5. Differential Non−Linearity
t_F
SCL
t_SU:STA
SDA IN
SDA OUT
t_HIGH
t_R
t_LOW
t_LOW
t_HD:STA
t_HD:DAT
t_SU:DAT
t_AA
t_DH
Figure 6. Bus Timing
t_SU:STO
t_BUF
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