THS7102

ADSL (POTS) CENTRAL OFFICE LINE INTERFACE DRIVER/RECEIVER

SLOS311B− MAY 2000 − REVISED DECEMBER 2001

5

POST OFFICE BOX 655303

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

RIN−Tx Input resistance (single-ended)

1.13

1.16

1.19

k

Ω

VA

Output voltage

f = 1 MHz,

THD

≤ −31 dBc

23.8

24.4

Vpp

VA/VIN

Gain (see Note 3 and Figure 1)

f = 1 MHz

18.9

19.2

19.5

dB

VA/VIN

Gain (see Note 3 and Figure 1)

f

≅ 150 kHz (Peak Frequency)

22.4

22.7

23

dB

VB/VIN

Gain (see Note 3 and Figure 1)

f = 1 MHz

18.1

18.4

18.7

dB

VB/VIN

Gain (see Note 3 and Figure 1)

f

≅ 150 kHz (Peak Frequency)

21.6

21.9

22.2

dB

30 kHz

55

Differential output noise

100 kHz

85

nV/

√Hz

Differential output noise

138 kHz

118

nV/

√Hz

Zo

Output impedance‡

f = 20 kHz to 1.1 MHz

†

Ω

Filter corner frequency

HPF,

Ci = 0.1 µF

100

107

114

kHz

Filter corner frequency

LPF

1.1

1.3

1.65

MHz

Out of band rejection (relative to the input

VO at f = 40 kHz

Ci = 0.1 µF

0

−2

dB

Out of band rejection (relative to the input

signal)

VO at f = 6 MHz

−17.5

−20.5

dB

Channel-to-channel mismatch

f = 100 kHz to 800 kHz

−0.45

0

0.45

dB

Channel-to-channel mismatch

f = 900 kHz to 1.1 MHz

−0.45

0

0.5

dB

Off,

TXEN1 = 0

TXEN2 = 0

0.7

1

1.3

ICCL

Supply current

Low,

TXEN1 = 1

TXEN2 = 0

13.1

14.6

16.1

mA

ICCL

Supply current

Med.,

TXEN1 = 1

TXEN2 = 1

13.3

14.8

16.3

mA

High,

TXEN1 = 0

TXEN2 = 1

13.5

15

16.5

Off,

TXEN1 = 0,

TXEN2 = 0

0

0.6

1.1

ICCOP

Supply current

Low,

TXEN1 = 1,

TXEN2 = 0

1.7

2.7

3.7

mA

ICCOP

Supply current

Med.,

TXEN1 = 1,

TXEN2 = 1

6

7.5

9

mA

High,

TXEN1 = 0,

TXEN2 = 1

11

13

15

† The test circuit of RS = 1.35 Ω, N = 1, and RL = 27 Ω is equivalent to a standard ADSL circuit with RS = 1.35 Ω, N = 1.9, and RL = 100 Ω.

‡ Output impedance is given by Zo = 10 × RS.

NOTES:

3. Due to the gain of the transmit path, the maximum input voltage should not exceed 3 Vpp or clipping and distortion occurs.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VO

Output voltage

VI = 1 Vpp, f = 103.5 kHz

19

20

Vpp

Output noise

At f = 30 kHz

77

nV/

√Hz

Output noise

At f = 130 kHz

72

nV/

√Hz

Vn

Noise voltage (preamp input noise)

f = 20 kHz

2.3

nV/

√Hz

In

Noise current (preamp input noise)

f = 20 kHz

1.0

pA/

√Hz

Filter corner frequency

VI = 0.5 Vpp

137.5

146.3

155

kHz

Out of band rejection (relative to input

point A) See Figure 1

VO at f = 400 kHz

−11.7

−13

dB

In-band ripple

VO at f = 55 kHz and 103.5 kHz

0.2

0.5

dB

Channel-to-channel mismatch

f = 10 kHz to 145 kHz

−0.2

0

0.2

dB