Datasheet

MAX5477/MAX5478/MAX5479
CROSSTALK vs.
FREQUENCY (MAX5478)
MAX5477/78/79 toc20
FREQUENCY (kHz)
CROSSTALK (dB)
1001010.1
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
0.01 1000
C
W_
= 10pF
CROSSTALK vs.
FREQUENCY (MAX5479)
MAX5477/78/79 toc21
FREQUENCY (kHz)
CROSSTALK (dB)
1000100101
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
0.1 10,000
C
W_
= 10pF
FREQUENCY (kHz)
GAIN (dB)
MIDSCALE WIPER RESPONSE
vs. FREQUENCY (MAX5477)
1
0
-1
-2
-3
-4
-5
-6
-7
-8
10.1 10 100 1000
MAX5477/78/79 toc22
C
W_
= 10pF
C
W_
= 50pF
MIDSCALE WIPER RESPONSE
vs. FREQUENCY (MAX5478)
MAX5477 toc23
FREQUENCY (kHz)
GAIN (dB)
100101
-7
-6
-5
-4
-3
-2
-1
0
1
2
-8
0.1 1000
C
W_
= 50pF
C
W_
= 10pF
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (MAX5478)
MAX5477/78/79 toc26
FREQUENCY (kHz)
THD+N (%)
1010.1
0.001
0.01
0.1
1
10
0.0001
0.01 100
MIDSCALE
Dual, 256-Tap, Nonvolatile, I
2
C-Interface,
Digital Potentiometers
_______________________________________________________________________________________ 7
-0.20
-0.12
-0.16
-0.04
-0.08
0.04
0
0.08
0.16
0.12
0.20
0649632 128 160 192 224 256
DIFFERENTIAL NONLINEARITY
vs. CODE (VRM MODE)
MAX5477/78/79 toc18
CODE
DNL (LSB)
MAX5479
FREQUENCY (kHz)
CROSSTALK (dB)
CROSSTALK vs.
FREQUENCY (MAX5477)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0.1 1 10 100 1000 10,000
MAX5477/78/79 toc19
CW_ = 10pF
MIDSCALE WIPER RESPONSE
vs. FREQUENCY (MAX5479)
MAX5477/78/79 toc24
FREQUENCY (kHz)
GAIN (dB)
100101
-4
-3
-2
-1
0
1
2
-5
0.1 1000
C
W_
= 50pF
C
W_
= 10pF
FREQUENCY (kHz)
THD+N (%)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (MAX5477)
1
0.1
0.01
0.001
0.01 0.1 1 10 100
MAX5477/78/79 toc25
MIDSCALE
Typical Operating Characteristics (continued)
(V
DD
= +5V, H_ = V
DD
, L_ = GND, T
A
= +25°C, unless otherwise noted.)