THS7102 Datasheet, PDF (5/10 Pages) Texas Instruments – ADSL (POTS) CENTRAL OFFICE LINE INTERFACE DRIVER/RECEIVER

THS7102
ADSL (POTS) CENTRAL OFFICE LINE INTERFACE DRIVER/RECEIVER
SLOS311B− MAY 2000 − REVISED DECEMBER 2001
driver characteristics, VCCL = VCCOPx = 15 V, VCCON = GND, R_S = 1.35 Ω, N = 1, R_L = 27 Ω^†,
C_i = 0.1 µF, T_A = 25°C
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
RIN−Tx Input resistance (single-ended)
VA
Output voltage
VA/VIN Gain (see Note 3 and Figure 1)
f = 1 MHz,
THD ≤ −31 dBc
f = 1 MHz
f ≅ 150 kHz (Peak Frequency)
1.13 1.16 1.19 kΩ
23.8 24.4
Vpp
18.9 19.2 19.5
22.4 22.7
dB
23
VB/VIN Gain (see Note 3 and Figure 1)
f = 1 MHz
f ≅ 150 kHz (Peak Frequency)
18.1 18.4 18.7
dB
21.6 21.9 22.2
30 kHz
55
Differential output noise
Zo
Output impedance‡
Filter corner frequency
100 kHz
138 kHz
f = 20 kHz to 1.1 MHz
HPF,
LPF
Ci = 0.1 µF
85
nV/√Hz
118
†
Ω
100 107 114 kHz
1.1 1.3 1.65 MHz
Out of band rejection (relative to the input
signal)
Channel-to-channel mismatch
VO at f = 40 kHz
VO at f = 6 MHz
f = 100 kHz to 800 kHz
f = 900 kHz to 1.1 MHz
Ci = 0.1 µF
0
−2
dB
−17.5 −20.5
−0.45
−0.45
0 0.45
dB
0 0.5
Off, TXEN1 = 0
TXEN2 = 0
0.7
1 1.3
ICCL Supply current
Low, TXEN1 = 1
Med., TXEN1 = 1
TXEN2 = 0
TXEN2 = 1
13.1 14.6 16.1
mA
13.3 14.8 16.3
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,
Med., TXEN1 = 1,
TXEN2 = 0
TXEN2 = 1
1.7 2.7 3.7
6 7.5
mA
9
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.
receiver characteristics, VCCL = VCCOPx = 15 V, VCCON = GND, R_S = 1.35 Ω, N = 1, R_L = 3.9 kΩ,
R_F = 5 kΩ, Gain = 26 dB, T_A = 25°C
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
VO
Output voltage
Output noise
VI = 1 Vpp, f = 103.5 kHz
At f = 30 kHz
At f = 130 kHz
19
20
77
72
Vpp
nV/√Hz
Vn
Noise voltage (preamp input noise)
f = 20 kHz
In
Noise current (preamp input noise)
f = 20 kHz
Filter corner frequency
VI = 0.5 Vpp
Out of band rejection (relative to input
point A) See Figure 1
VO at f = 400 kHz
137.5
−11.7
2.3
1.0
146.3
−13
nV/√Hz
pA/√Hz
155 kHz
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
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