U4270B TEMIC | Alldatasheet

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Technical content

Features

/C00687 stage limiter amplifier /C0068Multipath signal detector /C0068Stop signal generator with controllable threshold /C0068Signal strength output /C0068Controllable mute function /C0068High signal/noise ratio and low signal distortion Block Diagram Mute depth controlR 3 94 8876 ( ) SSO 20 4 (5) 8 (9) (8) 5 (6) (7) 11 (12) 15 (16) 13 (14) 12 (13) 2 16 (18) 18(20) (19)

TELEFUNKEN SemiconductorsU 4270 B Preliminary Information2 Rev. A1: 07.10.1994 Pin description DIP SSO Symbol Function 1 1 GND Ground 2 2 MUTE IN Mute input – 3 NC N.C. 3 4 MUTE DE Mute depth 4 5 AF AF output 5 6 STOP SEN Search tuning stop sensi- tivity 6 7 STOP SIG Search stop signal output 7 8 AFC AFC output 8 9 RVOLT Reference voltage output 9 10 DEMOD Demodulator circuit 10 11 DEMOD Demodulator circuit DIP SSO Symbol Function 11 12 FS Field strength 12 13 MPOUT Multipath identification output 13 14 RTC Rectifier time constant 14 15 V S Supply voltage 15 16 MPIN Multipath identification input – 17 NC N.C. 16 18 BFB Bias feedback 17 19 BFB Bias feedback 18 20 IF IF input MUTE DE 109 94 8949 IF BFB BFB MPIN V S RTC MPOUT FS DEMOD GND MUTE IN AF STOP SEN STOP SIG AFC RVOLT DEMOD MUTE DE 20 IF BFB BFB MPIN V S RTC MPOUT FS DEMOD GND MUTE IN AF STOP SEN STOP SIG AFC RVOLT DEMOD 94 8948 NC NC

TELEFUNKEN Semiconductors U 4270 B Preliminary Information 3Rev. A1: 07.10.1994 Absolute Maximum Ratings Reference point Pin 1, unless otherwise specified Parameters Symbol Value Unit Supply voltage Pin 14 V S 18 V Junction temperature Tj 150 °C Storage temperature range Tstg – 40 to + 150 °C Ambient temperature range Tamb – 25 to + 85 °C Thermal Resistance Parameters Symbol Maximum Unit Junction ambient R thJA 100 K/W

Electrical Characteristics

V S = 8.5 V , reference point Pin 1, fi = 10.7 MHz, adjusted at I7 = 0, Vi = 10 mV , FM-deviation /C0034 75 kHz, fmod = 1 kHz, Q 0 = 20, Tamb = 25 /C0095C, unless otherwise specified Parameters Test Conditions / Pin Symbol Min Typ Max Unit Supply voltage Pin 14 V S 7.5 15 V Supply current Pin 14 IS 19 23 mA Field strength output Pin 11 Output voltage V i = 200 mV V i = 50 mV V i = 1 mV V i = 0 mV V OUT 4.4 4.2 2.5 0.01 4.9 4.6 2.8 0.42 V Audio output signal Pin 4 Output voltage VAF 290 330 mV Distortion THD 0.48 0.88 % (S+N)/N ratio deviation /C0034 75 kHz S+N/N 77 81 dB AM-rejection m = 30 % 62 66 dB Mute depth V 2 = 0 V , R3 = /C0082 V 2 = 0 V , R3 = 0 amute 6.7 dB Maximum sink current I4 0.9 1.1 mA Stop signal output Pin 6 Input frequency window R 7-8 = 22 k/C0087 fwin /C0034 23 /C0034 28 kHz Output voltage HIGH LOW I6 < 0.5 mA V 6 0.1 0.2 V Input voltage threshold V 6 = 0.5 V , Pin 5 open V 6 = 0.5 V , V5 = V8 V i 25 0.6 1.3 /C0109V mV

TELEFUNKEN SemiconductorsU 4270 B Preliminary Information4 Rev. A1: 07.10.1994 Parameters Test Conditions / Pin Symbol Min Typ Max Unit AFC output Pin 7 Output current deviation /C0034 50 kHz /C0034IAFC 90 110 140 /C0109A Input frequency offset IAFC = 0 /C0034 foff 2 12 kHz Reference voltage output Pin 8 Output voltage I8 = 0.5 mA V 8 3.9 4.2 V Maximum load current I8 3 5 mA Multipath detection Pin 12, 13, 15 Detector threshold V 12 < 1 V , fV15 = 20 kHz V 15 5.4 7 mV Output leakage current V 12 = VS I12 1.5 /C0109A Charge current Pin 15 connected to ground I13 3 3.6 mA Discharge current Pin 15 open circuit V 13 /C0118 1 V I13 – 7 – 10 /C0109A Mute function Pin 2 Mute “off ” voltage Vout – 2 dB Voff 0.22 0.33 V IF-Input signal Pin 18 Limiting threshold Vout – 3 dB V i 25 33 dB /C0109V V S = 8.5 V , reference point Pin 1, fi = 10.7 MHz, adjusted at I7 = 0, Vi = 10 mV , FM-deviation /C0034 75 kHz, fmod = 1 kHz, Q 0 = 20, Tamb = – 40 to + 85 /C0095C, unless otherwise specified Parameters Test Conditions / Pin Symbol Min Typ Max Unit Supply voltage Pin 14 V S 7.5 15 V Supply current Pin 14 IS 17 25 mA Field strength output Pin 11 Output voltage V i = 200 mV V i = 50 mV V i = 1 mV V i = 0 mV V OUT 4.0 3.6 2.25 0.01 5.0 4.7 2.95 0.42 V Audio output signal Pin 4 Output voltage VAF 250 370 mV Distortion THD 0.48 0.88 % (S+N)/N ratio deviation /C0034 75 kHz S+N/N 70 81 dB AM-rejection m = 30 % 60 70 dB Mute depth V 2 = 0 V , R3 = /C0082 V 2 = 0 V , R3 = 0 amute 6 dB Maximum sink current I4 0.9 1.1 mA Stop signal output Pin 6 Input frequency window R 7-8 = 22 k/C0087 fwin /C0034 23 /C0034 39 kHz Output voltage HIGH LOW I6 < 0.5 mA V 6 0.1 0.5 V Input voltage threshold V 6 = 0.5 V , Pin 5 open V 6 = 0.5 V , V5 = V8 V i 14 0.6 20 54 2.0 /C0109V mV

TELEFUNKEN Semiconductors U 4270 B Preliminary Information 5Rev. A1: 07.10.1994 Parameters Test Conditions / Pin Symbol Min Typ Max Unit AFC output Pin 7 Output current deviation /C0034 50 kHz /C0034IAFC 60 110 140 /C0109A Input frequency offset IAFC = 0 /C0034 foff 8 15 kHz Reference voltage output Pin 8 Output voltage I8 = 0.5 mA V 8 3.7 4.2 V Maximum load current I8 3 5 mA Multipath detection Pin 12, 13, 15 Detector threshold V 12 < 1 V , fV15 = 20 kHz V 15 5.0 7 mV Output leakage current V 12 = VS I12 1.5 /C0109A Charge current Pin 15 connected to ground I13 2.1 4.0 mA Discharge current Pin 15 open circuit V 13 /C0118 1 V I13 – 6 – 10 /C0109A Mute function Pin 2 Mute “off voltage Vout – 2 dB Voff 0.22 0.33 V IF-Input signal Pin 8 Limiting threshold Vout – 3 dB V i 25 33 dB /C0109V Test circuit: V i Multipath input Q 0 signal voltage VAF

TELEFUNKEN SemiconductorsU 4270 B Preliminary Information6 Rev. A1: 07.10.1994 Ordering and package information Extended type number Package Remarks U 4270 B-CFS SSO 20 plastic U 4270 B-CFSG3 SSO 20 plastic Taping according to IEC-286-3 U 4270 B-C DIP 18 Dimensions in mm Package DIP 18 Package SSO 20

TELEFUNKEN Semiconductors U 4270 B Preliminary Information 7Rev. A1: 07.10.1994 OZONE DEPLETING SUBSTANCES POLICY STATEMENT It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. meet all present and future national and international statutory requirements and 2. regularly and continuously improve the performance of our products, processes, distribution and operating systems. With respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. Of particular concern is the control or elimination of releases into the atmosphere of substances who are known as ozone depleting substances (ODS’s). The Montreal Protocol (1987) and its London Amendments (1990) will severely restrict the consumption of ODS’s and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuos improvements to eliminate the use of any ODS’s listed in the following documents that all refer to the same substances: (1) Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively (2) Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency (EPA) in the USA and (3) Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. TEMIC can certify, that our semiconductors are not manufactured with and do not contain ozone depleting substances. We reserve the right to make changes without further notice to improve technical design. Parameters can vary in different applications. All operating parameters must be validated for each customer application by customer. Should Buyer use TEMIC products for any unintended or unauthorized application, Buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2831, Fax Number: 49 (0)7131 67 2423