ST70136G 데이터 시트보기 (PDF) - STMicroelectronics
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ST70136G Datasheet PDF : 24 Pages
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ST70136
5.4 - Transmit Path Specifications
TA = 0 to 70°C unless otherwise specified. The following specifications are guaranteed only when the
Digital Control Interface is not active.
Table 10 : Transmit Path Specifications
Typical specifications apply for VCC = 5.0V, temperature = 27°C, nominal process and bias current. Maximum and
minimum performance is with VCC ±5%, 0°C < Tambient < 70°C, and worst case process and bias current.
Description
Min.
Typ.
Max.
Unit
Comments
Input word rate
Input word resolution
PGAP/PGAN OUTPUT
Common mode voltage
Load resistance
Load capacitance
Output Impedance
Reference Output signal a
Output noise
Cutoff frequency
Gain,0 ≤ D ≤ 15
b
step size 1dB
Step size
TXP/TXN OUTPUT
Common mode voltage
Load resistance
Load capacitance
Output Impedance
Output SDR
2 tones ADSL/POTS
c
2 tones ADSL/ISDN
d
8.832
MHz
16
bits
2.4
2.5
2.6
V Measured on each output
500
Ω Single ended
10
pF Single ended
1
5
Ω Single ended
-5%
2.4
+5%
Vp Differential output @0dB gain for TxPGA
45
--n----V----- See also mask diagram below ("Final
Hz PGAP/N noise mask")
4
MHz @-3dB
-D-0.5
-D
-D+0.5 dB Programmable attenuator.
0.8
1
1.2
dB
2.4
2.5
2.6
V Measured on each output
500
Ω Single ended
10
pF Single ended
1
5
Ω Single ended
dB For TxPGA gain = 0dB
79
71
Notes: a. This will represents the 0dBr for the other specifications in the present table. The level is mesured for the frequency of 30KHz
which will correspond to the reference frequency. Variations include process, temperature and power variations.
b. This gain is given relatively to the 0dBr previously defined. Variations include process, temperature and power variations.
c. Ratio between max peak amplitude of one of the 2 single tones to any spurious. Measure performed for a dual tone signal (each
tone with an amplitude equal to -6dBr), in range 30KHz to 1MHz (couple (f1,f2) are (70KHz, 80KHz), (120KHz, 130KHz)).
d. Ration between max peak amplitude of one of the 2 single tones to any spurious. Measure performed for a (250KHz, 260KHz) dual
tone signal (each tone with an amplitude equal to -6dBr), in range 30KHz to 1MHz.
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