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TEA1110A Arkusz danych(PDF) 2 Page - NXP Semiconductors |
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2 / 20 page 1997 Apr 22 2 Philips Semiconductors Product specification Low voltage versatile telephone transmission circuit with dialler interface TEA1110A FEATURES • Low DC line voltage; operates down to 1.6 V (excluding voltage drop over external polarity guard) • Voltage regulator with adjustable DC voltage • Provides a supply for external circuits • Symmetrical high impedance inputs (64 kΩ) for dynamic, magnetic or piezo-electric microphones • Asymmetrical high impedance input (32 kΩ) for electret microphones • DTMF input with confidence tone • MUTE input for pulse or DTMF dialling • Receiving amplifier for dynamic, magnetic or piezo-electric earpieces • AGC line loss compensation for microphone and earpiece amplifiers. APPLICATION • Line powered telephone sets, cordless telephones, fax machines, answering machines. GENERAL DESCRIPTION The TEA1110A is a bipolar integrated circuit that performs all speech and line interface functions required in fully electronic telephone sets. It performs electronic switching between speech and dialling. The IC operates at a line voltage down to 1.6 V DC (with reduced performance) to facilitate the use of telephone sets connected in parallel. All statements and values refer to all versions unless otherwise specified. QUICK REFERENCE DATA Iline = 15 mA; VEE =0V; RSLPE =20 Ω; AGC pin connected to VEE; Zline = 600 Ω; f = 1 kHz; Tamb =25 °C; unless otherwise specified. ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Iline line current operating range normal operation 11 − 140 mA with reduced performance 1 − 11 mA VLN DC line voltage 3.35 3.65 3.95 V ICC internal current consumption VCC = 2.9 V − 1.1 1.4 mA VCC supply voltage for peripherals IP =0mA − 2.9 − V Gvtrx typical voltage gain microphone amplifier (not adjustable) VMIC = 4 mV (RMS) − 43.7 − dB receiving amplifier range VIR = 4 mV (RMS) 19 − 33 dB ∆Gvtrx gain control range for microphone and receiving amplifiers with respect to Iline =15mA Iline =85mA − 5.9 − dB ∆Gvtrxm gain reduction for microphone and receiving amplifiers MUTE = LOW − 80 − dB TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TEA1110A DIP14 plastic dual in-line package; 14 leads (300 mil) SOT27-1 TEA1110AT SO14 plastic small outline package; 14 leads; body width 3.9 mm SOT108-1 |
Podobny numer części - TEA1110A |
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Podobny opis - TEA1110A |
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