CS3310 Stereo Digital Volume Control Features Description The CS3310 is a complete stereo digital volume control z Complete Digital Volume Control designed specifically for audio systems. It features a 16- 2 Independent Channels bit serial interface that controls two independent, low- Serial Control distortion audio channels. 0.5 dB Step Size The CS3310 includes an array of well-matched resistors z Wide Adjustable Range and a low noise active output stage that is capable of -95.5 dB Attenuation driving a 600 load. A total adjustable range of 127 dB, in 0.5 dB steps, is achieved through 95.5 dB of attenua- +31.5 dB Gain tion and 31.5 dB of gain. z Low Distortion & Noise 0.001% THD+N The simple 3-wire interface provides daisy-chaining of multiple CS3310 s for multi-channel audio systems. 116 dB Dynamic Range z Noise Free Level Transitions The device operates from 5 V supplies and has an in- put/output voltage range of 3.75 V. z Channel-to-Channel Crosstalk Better Than 110 dB ORDERING INFORMATION CS3310-KS 0 to 70 C 16-pin Plastic SOIC CS3310-KSZ, Lead Free 0 to 70 C 16-pin Plastic SOIC 16 AINL + 14 AOUTL - 8 MUX MUTE 8 1 8 ZCEN 2 CS 15 Control AGNDL Register 3 16 AGNDR SDATAI 10 Serial to 7 8 SDATAO Parallel Register 6 SCLK 8 MUX 11 - AOUTR 9 + AINR 12 13 4 5 VA+ VA- VD+ DGND Cirrus Logic, Inc. Copyright Cirrus Logic, Inc. 2005 www.cirrus.com SEPTEMBER 05 (All Rights Reserved) DS82F1 1CS3310 ANALOG CHARACTERISTICS (T = 25 C, VA+, VD+ = 5 V 5% VA- = -5V 5% Rs = 0 R = A L 2k C = 20 pF 10 Hz to 20 kHz Measurement Bandwidth unless otherwise specified) L Parameter Symbol Min Typ Max Unit DC Characteristics Step Size - 0.5 - dB Gain Error (31.5 dB Gain) - 0.05 - dB Gain Matching Between Channels - 0.05 - dB Input Resistance R 810 - k IN Input Capacitance C -10 - pF IN AC Characteristics Total Harmonic Distortion plus Noise (V in = 2V rms, 1 kHz) THD+N - 0.001 .0025 % Dynamic Range 110 116 - dB Input/Output Voltage Range (VA-)+1.25 - (VA+)-1.25 V Output Noise (Note 1) - 4.2 8.4 Vrms Digital Feedthrough (Peak Component) (Note 2) -80 - - dB Interchannel Isolation (1 kHz) (Note 2) -100 -110 - dB Output Buffer Offset Voltage (Note 1) V - 0.25 0.75 mV OS Load Capacitance - - 100 pF Short Circuit Current - 20 - mA Unity Gain Bandwidth, Small Signal (Note 2) 2 - - MHz Power Supplies Supply Current (No Load, AIN = 0 V) IA+ - 7.0 9.0 mA IA- - 7.0 9.0 mA ID+ - 450 800 A Power Consumption P -72 94 mW D Power Supply Rejection Ratio (250 Hz) PSRR - 80 - dB Notes: 1. Measured with input grounded and Gain = 1. Will increase as a function of Gain settings >1. 2. This parameter is guaranteed by design and/or characterization. 2 DS82F1