STLC60134S View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STLC60134S' PDF : 22 Pages View PDF
STLC60134S
Linearity of ATU-R TX
Table 18. Linearity of ATU-R TX
f1 (0.5Vpd)
f2 (0.5Vpd)
S/IM3 (AGC = 0 dB)
80kHz
70kHz
59.5dB (@ 60KHz, 90KHz)
TX IDLE CHANNEL NOISE
ATU-C TX idle channel noise
The idle channel noise specifications correspond with 11bit resolution of the complete TX-path. ATU-C
TX idle channel output noise on TX.
Table 19. ATU-C TX idle channel noise
For max AGC setting (0dB)
In-band noise
Out-of-band noise
For min AGC setting (=-15dB)
In-band noise
500nVHz-1/2
500nVHz-1/2
80nVHz-1/2
@ 138kHz -1.104MHz
@ 34.5kHz -138kHz
@ 138kHz -1.104MHz
ATU-R TX idle channel noise
ATU-R TX idle channel output noise on TXP, TXN
Table 20. ATU-R TX idle channel noise
For max AGC setting (0dB)
In-band noise
Out-of-band noise
For min AGC setting (=-15dB)
In-band noise
1.6µVHz-1/2
1.6µVHz-1/2
150nVHz-1/2
500nVHz-1/2
@ 34.5kHz -138kHz
@ 138kHz
@ 250kHz -1.104MHz
@ 34kHz -138kHz
Power Supply Rejection
The noise on the power supplies for the TX-path must be lower than the following:
< 50mVrms in-band white noise for AVDD.
< 15mVrms in-band white noise for Pre-driver AVDD.
VCXO
A voltage controlled crystal oscillator driver is integrated in STLC60134S. The nominal frequency is
35.328MHz. The quartz crystal is connected between the pins XTALI and XTALO.
The principle of the VCXO control is shown in figure 11.
The information coming from the digital processor via the CTRLIN path is used to drive an 8-bit DAC
which generates a control current. This current is externally converted and filtered to generate the re-
quired control voltage (range:-15V to 0.5V) for the varicap. The VCXO circuit characteristics are given in
Table 21.
12/22
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