NE614AN Philips Semiconductors, NE614AN Datasheet

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NE614AN

Manufacturer Part Number
NE614AN
Description
Low power FM IF system
Manufacturer
Philips Semiconductors
Datasheet
Product specification
Replaces data of December 15, 1994
IC17 Data Handbook
Philips Semiconductors
SA614A
Low power FM IF system
RF COMMUNICATIONS PRODUCTS
1997 Nov 07

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NE614AN Summary of contents

Page 1

... RF COMMUNICATIONS PRODUCTS SA614A Low power FM IF system Product specification Replaces data of December 15, 1994 IC17 Data Handbook Philips Semiconductors 1997 Nov 07 ...

Page 2

... Philips Semiconductors Low power FM IF system DESCRIPTION The SA614A is an improved monolithic low-power FM IF system incorporating two limiting intermediate frequency amplifiers, quadrature detector, muting, logarithmic received signal strength indicator, and voltage regulator. The SA614A features higher IF bandwidth (25MHz) and temperature compensated RSSI and limiters permitting higher performance application compared with the SA604 ...

Page 3

... Philips Semiconductors Low power FM IF system BLOCK DIAGRAM 16 15 REGULATOR GND 1 2 ABSOLUTE MAXIMUM RATINGS SYMBOL V Single supply voltage CC T Storage temperature range STG T Operating ambient temperature range SA614A A Thermal impedance JA DC ELECTRICAL CHARACTERISTICS V = +6V unless otherwise stated SYMBOL ...

Page 4

... Philips Semiconductors Low power FM IF system AC ELECTRICAL CHARACTERISTICS Typical reading +6V, unless otherwise stated +8kHz peak deviation. Audio output with C-message weighted filter and de-emphasis capacitor. Test circuit Figure 3. The parameters listed below are tested using automatic test equipment to assure consistent electrical characterristics. The limits do not represent the ultimate performance limits of the device ...

Page 5

... Philips Semiconductors Low power FM IF system NE614A TEST CIRCUIT C 1 INPUT 100nF + 80 – 20% 63V K10000–25V Ceramic 100nF +10% 50V C2 100nF +10% 50V C3 100nF +10% 50V C4 C5 100nF +10% 50V 10pF +2% 100V NPO Ceramic C6 100nF +10% 50V C7 C8 100nF +10% 50V C9 15nF +10% 50V C10 150pF +2% 100V N1500 Ceramic ...

Page 6

... Philips Semiconductors Low power FM IF system 42k 1.6k 40k FULL WAVE RECT VOLT VOLT REG REG BAND GAP VOLT V CC 80k GND 1997 Nov GND 700 7k 1.6k 40k 700 35k FULL WAVE RECT. VOLTAGE/ CURRENT CONVERTER MUTE V CC ...

Page 7

... Philips Semiconductors Low power FM IF system 0.5 to 1.3 H 22pF 1nF 5.5 H 5.6pF + 100nF 6.8 F 10nF SA602 1 2 47pF 0.21 to 0.28 H 22pF 100nF Figure 5. Typical Application Cellular Radio (45MHz to 455kHz) CIRCUIT DESCRIPTION The SA614A is a very high gain, high frequency device. Correct operation is not possible if good RF layout and gain stage practices are not used ...

Page 8

... Philips Semiconductors Low power FM IF system 42k 40k Figure 7. Second Limiter and Quadrature Detector HIGH IMPEDANCE BPF a. Terminating High Impedance Filters with Transformation to Low Impedance BPF b. Low Impedance Termination and Gain Reduction Figure 10. Crystal Input Filter with Ceramic Interstage Filter ...

Page 9

... Philips Semiconductors Low power FM IF system input level, the limited signal will begin to dominate the regeneration, and the demodulator will begin to operate in a “normal” manner. There are three primary ways to deal with regeneration: (1) Minimize the feedback by gain stage isolation, (2) lower the stage input impedances, thus increasing the feedback attenuation factor, and (3) reduce the gain ...

Page 10

... Philips Semiconductors Low power FM IF system From the above equation, the phase shift between nodes 1 and 2, or the phase across C will be – Figure 12 is the plot of vs notable that the phase shift is ...

Page 11

... Philips Semiconductors Low power FM IF system optimized at 0.22 V for 12dB SINAD with minor change in the RSSI linearity. Any application which requires optimized RSSI linearity, such as spectrum analyzers, cellular radio, and certain types of telemetry, will require careful attention to limiter interstage component selection. This will be especially true with high IF frequencies which require insertion loss or impedance reduction for stability ...

Page 12

... Philips Semiconductors Low power FM IF system DIP16: plastic dual in-line package; 16 leads (300 mil) 1997 Nov 07 12 Product specification SA614A SOT38-4 ...

Page 13

... Philips Semiconductors Low power FM IF system SO16: plastic small outline package; 16 leads; body width 3.9 mm 1997 Nov 07 13 Product specification SA614A SOT109-1 ...

Page 14

... Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. ...

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