tza3054a NXP Semiconductors, tza3054a Datasheet - Page 9

• Manufacturer Part Number: tza3054a
• Description: 100 Mbits/s To 3.2 Gbits/s A-rate Tm Limiting Amplifier
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 13466
Objective data sheet
8.5 RF output
The omission of R2 results in maximum LOS threshold, thereby generating LOS
constantly. LOSTH may be short-circuited to ground to circumvent this situation. If the
I
The RF CML output has a programmable signal amplitude between 500 mV to
2000 mV (p-p) (differential) in 7 steps of 250 mV, by I
register RFLVL; 13h). The output can also be switched off using this RFLVL register: this
might be useful to save power in case only the LLD and LOS functions of the TZA3054A
are used in the application. The default amplitude is 1500 mV (p-p, differential).
Furthermore, the termination scheme can be either DC or AC-coupled.
2
Fig 8. RF input voltage as a function of the LOSTH voltage.
Fig 9. RF output configuration.
C-bus DAC is used, R2 may be omitted or connected to ground.
V
IN(p-p)
1000
100
10
1
Rev. 01 — 12 August 2004
200
75
100 Mbit/s to 3.2 Gbit/s A-rate
TZA3054A
I
swing
540
001aab371
75
LOS
V
OUT
OUTQ
CCO
2
C-bus bits RFLVL[2:0] (I
880
V
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
LOSTH
50
50
(mV)
001aab370
TZA3054A
1220
limiting amplifier
2
C-bus
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