ADSL Drivers/Receivers for Customer Premise

Equipment

_______________________________________________________________________________________

5

DRIVER DIFFERENTIAL DISTORTION

vs. FREQUENCY

FREQUENCY (Hz)

100k

-90

-80

-70

-60

-50

-40

-100

10k

1M

VOUT = 7.2VP-P

G = 3

RL = 12.5

Ω

3RD HARMONIC

2ND HARMONIC

PEAK-TO-PEAK OUTPUT VOLTAGE (V)

7

6

5

4

3

-90

-80

-70

-60

-50

-40

-100

28

DRIVER DIFFERENTIAL DISTORTION

vs. PEAK-TO-PEAK OUTPUT VOLTAGE

f = 100kHz

G = 3

RL = 12.5

9

3RD HARMONIC

2ND HARMONIC

RLOAD (

Ω)

85

65

45

25

-90

-80

-70

-60

-100

5

DRIVER DIFFERENTIAL DISTORTION

vs. LOAD RESISTANCE

VOUT = 5VP-P

f = 100kHz

G = 3

RL = 12.5

Ω

3RD HARMONIC

2ND HARMONIC

TRANSFORMER TURNS RATIO

4.8

4.6

4.2 4.4

3.4 3.6 3.8 4.0

3.2

10.5

11.0

11.5

12.0

12.5

13.0

13.5

14.0

14.5

15.0

15.5

16.0

10.0

3.0

5.0

DRIVER LINE POWER

vs. TURNS RATIO

V+ = 5.5V

V+ = 4.5V

V+ = 5V

FREQUENCY (Hz)

100k

10k

10

1M

1k

100

1

10

100

1

MAX4361 toc05

DRIVER CURRENT AND VOLTAGE NOISE

vs. FREQUENCY

VNOISE

INOISE

FREQUENCY (Hz)

10M

1M

0.1

1

10

100

1k

10k

100k

0.01

100k

100M

DRIVER OUTPUT IMPEDANCE

vs. FREQUENCY

SHDN = VCC

SHDN = GND

FREQUENCY (Hz)

100M

10M

1M

100k

-25

-20

-15

-10

-5

0

5

10

15

20

-30

-150

-120

-90

-60

-30

0

30

60

90

120

-180

10k

1G

MAX4361 toc07

DRIVER GAIN AND PHASE

vs. FREQUENCY

GAIN

PHASE

G = 3

RL = 12.5

Ω

FREQUENCY (Hz)

10M

1M

100k

10k

-70

-60

-50

-40

-30

-20

-10

0

10

-80

1k

1G

DRIVER POWER-SUPPLY REJECTION

RATIO vs. FREQUENCY

G = 1

DRIVER OUTPUT SWING

vs. LOAD RESISTANCE

LOAD RESISTANCE (

Ω)

1k

100

10

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2.0

2.1

2.2

2.3

2.4

2.5

1.1

1

10k

1.0

-SWING

+SWING

Typical Operating Characteristics

(V+ = 5V, GND = 0, VCM = 2.5V, RL = 12.5

Ω, SHDN = 0, TA = +25°C.)