SL1430 ZARLINK | Alldatasheet
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Technical content
$L1430 i) Semiconductors ——__ V IF PREAMPLIFIER The SL1430 is a fixed gain IF preamplifier for television with an output optimised for driving Plessey wy second generation low capacitance surface acoustic we Gig op we wave (SAW) filters. The addition of one external ovrenema\\ 4? sp PD He capacitor allows the amplifier to drive normal capaci- OUT |, 1490 caouno tance SAW filters from Plessey or from other manu- «cd sh weve facturers. The device features on chip decoupling and differ- pps erential output, requiring a minimal number of external components to be used. Fig.1 Pin connections - top view
FEATURES
Low external component count —2 “Vee BB Low distortion i , Direct 12V operation eh @ Can be used with different types of SAW neuro =r oureur filters i —— QUICK REFERENCE DATA a I 22dB gain at 4OMHz Me 12V supply at 25mA M 120mV rms. input handling Fig. 2 Test circuit
ELECTRICAL CHARACTERISTICS
Test conditions (unless otherwise stated) : Tomb = +25°C Supply voltage = +12V Frequency = 40MHz Output load — 7.5 pF (Pins 2 and 3) Measurements made using test circuit Fig. 2. Characteristic [ min | typ | Max | Supply voltage 1 7 12 13.5] V Quescent current 1 22 33 40 mA | Pins 2, 30/C Cut-off frequency (—3dB) 5, 2/3] 60 110 MHz Voltage gain 18 22 26 dB Input signal for 46dB intermodulation 5 120 mv Red colour bar Input signal for 1% crossmodulation 5 75 mV (wanted level 20mV unwanted modulation 65%) Input signal for 1B sync tip compression] 5 | 130 mv | rms. Noise figure 5 4 dB Input impedance 5 3000/ 4.2pF 133
$L1430 My, vee ke of emewis epee > fs) Fig. 3 Typical applications SL1430 TYPICAL CHARACTERISTICS AT ,12V, +-25°C, WITH SW173 AS LOAD (7.5pF) (FIGS.5TO10) Unwanted signal with 65% amplitude modulation at 10KHz % > oh 7 5 ' 2 of “<4 A | 3 ia z Bw > —— an z 2 i | z 8 1 z Fs | | i 4 £ | z 2 3 : jt - ; | i} | UNWANTED FREQUENCY (MHz) a cr Fa. 6 Cros modution pfomance Y feqveney of nmented Fig. 4 Cross modulation performance (see note 1) Two 8 oo | > 5 i} oY : Fw gw ~ = Ee Fy F | | | Ew» - | j=} Es | | | } | oj gurney voice) ° gpomionat (10 Sw173) CAPACITANCE (of) Fig. 5 Cross modulation performance V supply voltage a (see note 1) Fig. 7 Intermodulation performance v. load capacitance
$L1430 a ees a A 3 Be be - Fie, 9 Invamodulatonpotarmance (see note 2) Ieacelsatt tant tabmece cen ciate ABSOLUTE MAXIMUM RATINGS. | Supply voltage —0.5V to +25V Operating temperature range —10°C to +65°C Storage temperature range —55°C to +125°C 135