u4037b ETC-unknow, u4037b Datasheet
u4037b
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u4037b Summary of contents
Page 1
... Preliminary Information U4037B The circuit is line powered and contains all components necessary for amplification of signals and adaption to the line. The power supply of U4037B provides the MCU during the ringing and the speech mode. Tone Ringer Interface D Adjustable volume via 2 bit D/A converter ...
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... U4037B Block Diagram / Applications MUTE W 620 Mute control DTMF RDC Supply current regulator SWAMP AGC VDD Receive volume control VOL1 VOL2 MELI Ringer volume control GND 9879 2 (6) Preliminary Information MIC1 MIC2 MICO TIN – Microphone amplifier + Control function ...
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... Positive supply voltage input to L the device The current through this pin is modulated by the transmit signal. TELEFUNKEN Semiconductors Rev. A1, 08-Oct-96 Preliminary Information U4037B Pin Symbol Function SWAMP An external resistor ( required from this pin to GND to control the dc input impedance of the circuit. It has a nominal value ...
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... U4037B Electrical Characteristics speech circuit Reference point Pin GND 1000 Hz, 0 dBm = 775 mV Parameters Line voltage Transmit and sidetone Input resistance R i Gain I L Line loss compensation R AGC Distortion at line I L Maximum output voltage mic Anti-clipping attack time ...
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... Supply voltage for MCU I < Ordering Information Type U4037B Package Information Package SO24 Dimensions in mm 15.5 15.3 2.7 2.45 0.49 0.35 1.27 13.97 TELEFUNKEN Semiconductors Rev. A1, 08-Oct-96 Preliminary Information Symbol Min Typ I 1.5 2 6.5 VOI1 40 VOI2 3.2 Package SO24 9.25 8.75 2.45 0.3 2.25 0.2 0.1 min 7.5 7.3 10.55 10.15 technical drawings according to DIN specifications U4037B Max Unit 2 dB( 11492 5 (6) ...
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... U4037B 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. 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 ...