tda3845t NXP Semiconductors, tda3845t Datasheet

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tda3845t

Manufacturer Part Number
tda3845t
Description
Quasi Split-sound Circuit And Am Demodulator
Manufacturer
NXP Semiconductors
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
TDA3845T
Manufacturer:
PHILIPS/飞利浦
Quantity:
20 000
Objective specification
File under Integrated Circuits, IC02
DATA SHEET
TDA3845; TDA3845T
Quasi split-sound circuit and AM
demodulator
INTEGRATED CIRCUITS
January 1993

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tda3845t Summary of contents

Page 1

... DATA SHEET TDA3845; TDA3845T Quasi split-sound circuit and AM demodulator Objective specification File under Integrated Circuits, IC02 INTEGRATED CIRCUITS January 1993 ...

Page 2

... Philips Semiconductors Quasi split-sound circuit and AM demodulator FEATURES Power supply from 5 V (200 mW source also an alternative 12 V source (12 V not for TDA3845T) Gain controlled wideband IF amplifier (AC coupled with three stages) High precision internal 90 phase shifter for quadrature demodulator Amplitude detector for gain control which operates as a ...

Page 3

... Philips Semiconductors Quasi split-sound circuit and AM demodulator (1) See note 10 to the characteristics. (2) Not for TDA3845T, pin 11 not connected. January 1993 Fig.1 Block diagram. 3 Objective specification TDA3845; TDA3845T ...

Page 4

... Philips Semiconductors Quasi split-sound circuit and AM demodulator (1) not for TDA3845T, pin 11 not connected. Fig.2 Pin configuration. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC134) SYMBOL supply voltage V pin pin 11 (not for TDA3845T operating ambient temperature amb T storage temperature ...

Page 5

... CHARACTERISTICS (note 11 all measurements are referenced to ground (pin 13); unless otherwise specified. P1 amb SYMBOL PARAMETER Supply supply voltage V pin pin 11 (not for TDA3845T total supply current tot IF amplifier R input resistance 1-16 C input capacitance 1-16 V minimum IF input voltage ...

Page 6

... AGC (AM mode switch current Ripple rejection (note 13) AM/AF signal RR voltage ripple voltage ripple on output signal FM phase noise f(RMS) intercarrier signal January 1993 TDA3845; TDA3845T CONDITIONS MIN. 60/58 57/55 53/51 50/44 440 3 dB; note 12 0.02 note 10 50 note 7 V used 1 used 1.8 P2 via a 2 ...

Page 7

... Ripple rejection (note 13) AM/AF signal RR voltage ripple voltage ripple on output signal FM phase noise f(RMS) intercarrier signal January 1993 TDA3845; TDA3845T CONDITIONS MIN. 440 3 dB; note 12 0.02 note 10 50 note 7 V used 1 used 1.8 P2 via a 2.2 k series resistor ...

Page 8

... If higher AC output current is required an external resistor must be connected between the output pin and ground in order to increase the bias current of the emitter follower. The permissible maximum DC output current must not be exceeded. January 1993 = 10 mV (RMS). Transmitter mode: DSB. 1-16 27 kHz and the (S + W)/W figures will decrease by 5.4 dB. 8 Objective specification TDA3845; TDA3845T ...

Page 9

... V the performance will be comparable with the performance when V P2 The power supply pin that is not in use should be disconnected. 12. The maximum value given as minimum 120 kHz and typical 700 kHz. 13. Voltage ripple 200 mV (p- Hz. January 1993 = 10 mV (RMS). 1-16 9 Objective specification TDA3845; TDA3845T = ...

Page 10

... Philips Semiconductors Quasi split-sound circuit and AM demodulator (1) See note 5 to the characteristics. (1) See note 5 to the characteristics. Fig.4 Test circuit for the +12 V supply; not for TDA3845T. January 1993 Fig.3 Test circuit for the +5 V supply. 10 Objective specification TDA3845; TDA3845T ...

Page 11

... Philips Semiconductors Quasi split-sound circuit and AM demodulator APPLICATION INFORMATION (1) See note 5 to the characteristics. Fig.5 Application diagram for the +12 V supply; not for TDA3845T. (1) See note 5 to the characteristics. January 1993 Fig.6 Application diagram for the +5 V supply. 11 Objective specification ...

Page 12

... With an IF filter in accordance with this proposal, the video buzz suppression on the audio output is better than 50 dB (in accordance with CCIR 468- 54%) for the worst case video modulation with 6 kHz sinewave black-to-white. Note to figures 7 and 8. Where SC = sound carrier and PC = picture carrier. January 1993 TDA3845; TDA3845T Fig filter for standard L-accent. 12 Objective specification ...

Page 13

... Philips Semiconductors Quasi split-sound circuit and AM demodulator January 1993 TDA3845; TDA3845T 13 Objective specification ...

Page 14

... Fig.10 Response curve of the signal-to-weighted noise ratio of the demodulated intercarrier signal. 2 handbook, full pagewidth THD (%) Fig.11 Response curve for the total harmonic distortion of the AM signal. January 1993 Objective specification TDA3845; TDA3845T MLB058 (Hz) ...

Page 15

... January 1993 scale (1) ( 0.53 0.32 21.8 6.48 2.54 0.38 0.23 21.4 6.20 0.021 0.013 0.86 0.26 0.10 0.015 0.009 0.84 0.24 REFERENCES JEDEC EIAJ MO-001AE 15 Objective specification TDA3845; TDA3845T 3.9 8.25 9.5 7.62 0.254 3.4 7.80 8.3 0.32 0.15 0.37 0.30 0.01 0.13 0.31 0.33 EUROPEAN ISSUE DATE PROJECTION ...

Page 16

... 2.5 scale (1) ( 0.49 0.25 10.0 4.0 6.2 1.27 0.36 0.19 9.8 3.8 5.8 0.0100 0.39 0.16 0.244 0.050 0.0075 0.38 0.15 0.228 REFERENCES JEDEC EIAJ MS-012AC 16 Objective specification TDA3845; TDA3845T detail 1.0 0.7 1.05 0.25 0.25 0.1 0.4 0.6 0.039 0.028 0.041 0.01 0.01 0.004 0.016 ...

Page 17

... V) applied to the flat part of the lead. Contact time must be limited to 10 seconds 300 C. When using a dedicated tool, all other leads can be soldered in one operation within seconds between 270 and 320 C. 17 Objective specification TDA3845; TDA3845T ...

Page 18

... Philips customers using or selling these products for use in such applications their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. January 1993 TDA3845; TDA3845T 18 Objective specification ...

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