SL2009

SL2009 Dual stage IF amplifier for cable tuners DS5507 ISSUE 1.4 March 2002 Features Single chip solution for tuner IF gain and AGC Contains 34 dB of AGC shared between two AGC stages Design optimised for high signal handling with low inter-modulation spurious generation I/O ports optimised to interface with standard SAW filters ESD protection (Normal ESD handling procedures should be observed) Ordering Information SL2009/KG/NP1T (Tape and Reel) SL2009/KG/NP1S (Tubes) The devices includes two stages of IF gain which are both optimised to interface with inter-stage filters. Both stages contain independent AGC facility, and the first stage contains a level detect for control of the tuner AGC. Applications Cable Network interface modules and tuners Data communications systems IFIP IFIPB VCCIF AGC2 IFOP 1 16 VCCSAW SDRIVEOP SDRIVEOPB AGCOUT AGC1 SDRIVEIP SDRIVEIPB Description The SL2009 is a dual IF amplifier intended for application in cable tuners, and integrates all of the IF gain and AGC required to deliver 1Vp-p in a standard tuner configuration. VEE IFOPB VEE 8 9 AGCBIAS NP16 Figure 1 - Pin allocation (12) AGC1 AGC SENDER AGC SENDER AGCBIAS (9) AGCOUT (13) (11) SDRIVEIP (10) SDRIVEIPB (15) SDRIVEOP SAW Driver VccSAW (16) Vee (6,8) VccIF (3) (14) SDRIVEOPB (1) IFIP (2) IFIPB AGC IFOP (5) IFOPB (7) (4) AGC2 SENDER Figure 2 - Block diagram 1 SL2009 Characteristics SAWF driver stage Input operating range Input NF, referred to 2kΩ OPIP3 Gai...