SINEGEN (R) AMERICAN MICROSYSTEMS, INC June, 1998 Preliminary AMI 0.8 micron CMOS CWL Double Poly Sinegen Vdd CLK TONEenbl FEATURES * * Power down Mode. Implemented with a combination switch capacitor DAC and filter. SINEGEN Vref2x4 Vref1x9 SINE Vref1x4 DESCRIPTION Sine wave generator PDN Vss PIN DESCRIPTION MAME CLK TONEenbl Vref2x4 Vref1x9 Vref1x4 PDN SINE Vdd Vss TYPE Digital Input Digital Input Analog Input Analog Input Analog Input Digital Input Analog Output Power Ground DESCRIPTION Clock input, 64 times the sine freq, ~50% duty Enables the sine wave output, active high Voltage reference of 2.4 V Voltage reference of 1.9 V Voltage reference of 1.4 V Powers down the cell, active low Sine wave output Positive supply voltage Negative supply voltage AC ELECTRICAL CHARACTERISTICS PARAMETER Supply Voltage Range Supply Current Temperature Frequency Range Output Amplitude Amplitude Error Across Frequency Range Total Harmonic Distortion CONDITION MIN 4.5 TYP 0.75 -10 0.5 0.36 V Peak -0.25 dB (-3%) COMMENTS 1 MAX 5.5 1.5 70 3.0 0.254 V RMS +0.25 dB (+3%) -29 UNIT V mA C KHz DB (R) SINEGEN AMERICAN MICROSYSTEMS, INC June, 1998 Preliminary AMI 0.8 micron CMOS CWL Double Poly This Circuit was designed for a DTMF generator, and thus the output drivers were not laid out for external output. 2