UNISONIC TECHNOLOGIES CO.,LTD UA2311 CMOS IC 16 BITS DIGITAL to ANALOG CONVERTER DESCRIPTION UTC UA2311 is a 16-bits Digital-to-Analog Converter(DAC) designed for stereo audio applications and manufactured by CMOS Technologies with low power consumption It converts the 16 bits serial data into an analog output voltage by an R-string voltage divider. Each output channel voltage is driven by an operational amplifier allowing easy analog output. In sound cards test, the 44.1KHz or higher sampling rate is available. FEATURES * CMOS Technology * Low Power Consumption * Two Voltage Output Channels in the same chip * 16-bits Dynamic Range * Low Total Harmonic Distortion * 5V(typ.) Single Power Supply ORDERING INFORMATION Ordering Number Lead Free Halogen Free UA2311L-D08-T UA2311G-D08-T UA2311G-S08-R UA2311L-D08-T Package Packing DIP-8 SOP-8 Tube Tape Reel (1)Packing Type (1) T: Tube, R: Tape Reel (2)Package Type (2) D08: DIP-8, S08: SOP-8 (3)Green Package (3) L: Lead Free, G: Halogen Free and Lead Free MARKING DIP-8 8 7 6 5 UTC UA2311 1 2 3 4 SOP-8 Date Code L: Lead Free G: Halogen Free Lot Code www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co.,Ltd 1 of 5 QW-R502-043.B UA2311 PIN CONFIGURATION BCK 1 8 VOR WS 2 7 NC DATA 3 6 VOL GND 4 5 VDD PIN CONFIGURATION PIN NO. 1 2 3 4 5 6 7 8 CMOS IC PIN NAME BCK WS DATA GND VDD VOL NC VOR DESCRIPTION Bit Clock Input Word Select Input Data Input Ground Positive Power Supply Left Channel Output Not Connected Right Channel Output BLOCK DIAGRAM Floating Conversion DAC out + op - 8 VOR 7 NC 6 VOL 5 VDD VCC BCK 1 WS 2 DATA 3 GND out + op - Data Latch Floating Conversion 4 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw out + op DAC 2 of 5 QW-R502-043.B UA2311 CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS Power Supply Voltage VDD -3.0 ~ +7.0 Input Voltage VIN -0.3 ~ VDD+0.3 Operating Temperature TOPR 0 ~ +70 Storage Temperature TSTG -40 ~ +150 Notes: 1. The typical power supply voltage propose at 5V, and range from 4.75V~6V is recommended. 2. Operating temperature range between 0~+50C is strongly recommended, TA=25 is typical. UNIT V V C C ELECTRICAL CHARACTERISTICS DC CHARACTERISTICS (TA=0 ~ 70C, VDD=5.0 ± 0.25V, unless otherwise specified) PARAMETER Input Voltage Level High Low Input Leakage Current Input Capacitance Power Consumption Clock Frequency Note: Applicable to BCK, WS & DATA. SYMBOL VIH VIL IIN(LEAK) CIN W fc TEST CONDITIONS Note Note Note Note VDD=5.0V MIN 0.66VDD TYP MAX UNIT 0.30VDD 0.1 5 30 5.6448 18.4 V μA pF mW MHz ANALOG CHARACTERISTICS (TA=25C, VDD=5.0V, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN Maximum Output Amplitude VOUT Total Harmonic Distortion (Note 1) THD 1KHz, 0dB Dynamic Range DR Signal-to-Noise Ratio (Note 2) S/N 1KHz, 0dB Cross Talk (Note 2) CT 1KHz, 0dB Notes: 1. Measured with 176.4KHz sampling rate, 2K~ 20K Harmonics. 2. Measured with an A/D & D/A Evaluation Board at sampling rate of 48KHz. TYP 2.5 0.13 16 82 -85 MAX UNIT Vpp % bit dB dB TYP MAX UNIT ns ns ns TIMING CHARACTERISTICS (refer to Figure 1) PARAMETER High Level Time Rise Time Fall Time UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw SYMBOL tH tR tF MIN 25 20 20 3 of 5 QW-R502-043.B UA2311 CMOS IC FUNCTIONAL DESCRIPTION The UTC UA2311 accepts serial input data format of 16-bits word length. Both left and right data words are time multiplexed. The last 16 bits word before “WS” changes is recognized as the input data. The timing and input signal formats are shown in Figure 1 and 2. The most significant bit (bit 1) must always be first. The serial input data is shifted and latched for the Right and Left Channels. With a HIGH level on the word select input (WS), data is placed in the left input register and with a LOW level on the WS input, data is placed in the right input register(see Block Diagram). The data in the input registers are simultaneously latched in the output registers which control the bit switches. The 16 bits Right/Left Data is then converted to floating point expression whose format consists of 10 bits mantissa and 7 step exponent. This floating point expression is then converted to analog output voltage by the resistor-string. This signal is driven to the Right/Left Channel (VOR/VOL) by the buffer operational amplifier. RIGHT LEFT WS tR tH tF BCK DIN LSB+ 1 LSB MSB MSB-1 Figure.1 Input Signal Format LSB Data MSB LSB MSB BCK LEFT RIGHT WS Sample Out Figure.2 Timing and Input Signal Formats UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R502-043.B UA2311 CMOS IC APPLICATION CIRCUIT A typical example of CD-ROM application is showed as below. It features typical decoupling components and a second-order analog post-filter stage providing a line output. - 1000pF + 7.5K BCK VOR WS NC DATA VOL GND Right Channel Audio Output 7.5K 470pF VDD UTC UA2311 - 1000pF VDD + 7.5K 10 Left Channel Audio Output 7.5K 470pF 47μF 100nF UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R502-043.B