TDA7535

TDA7535 Delta/sigma cascade 20 bit stereo DAC Features ■ 20-bit resolution single ended output ■ Analog reconstruction third order Chebyshev filter ■ I2S input data format ■ On chip PLL ■ System clock: 64 Fs ■ 2 output channels ■ 0.9 VRMS single ended output dynamic ■ 3.3 V power supply ■ Reset ■ Sampling rate 36 kHz to 48 kHz ) s ( ct u d o r P e Description t e l o ) (s The TDA7535 is a stereo, digital-to-analog converter designed for audio application, including digital interpolation filter, a third order multi-bit Delta-Sigma DAC, a third order Chebyshev's reconstruction filter and a differential to single ended output converter. This device is fabricated in highly advanced CMOS, where high speed precision analog circuits are combined with high density logic circuits. The TDA7535, according to standard audio converters, can accept any I2S data format. t c u d o r P e t e l o s b O Table 1. SO14 s b O The TDA7535 is available in SO14 package. The total power consumption is less than 75 mW. TDA7535 is suitable for a wide variety of applications where high performance are required. Its low cost and single 3.3 V power supply make it ideal for several applications, such as CD players, MPEG audio, MIDI applications, CD-ROM drives, CD-Interactive, digital radio applications and so on. An evaluation board is available to perform measurement and to make listening tests. Device summary Order code Package Packing TDA7535 SO14 Tube TDA7535013TR SO14 Tape and reel February 2009 Rev 8 1/12 www.st.com 12 Contents TDA7535 Contents 1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Recommended DC operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.4 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.5 General interface electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.6 Low voltage CMOS interface DC electrical characteristics . . . . . . . . . . . . 5 2.7 DAC electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ) s ( ct u d o r P e 3 I2S interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 t e l o ) (s t c u d o r P e t e l o s b O 2/12 s b O TDA7535 1 Block diagram and pin description Block diagram and pin description Figure 1. I2S I2S Block diagram DIGITAL INPUT 20 FIR1 FIR2 FIR3 20 FS PLL 8FS ALU CLKOUT 23 S&H ΣΔ MODULATOR 64FS 4 THERMO DECODER & RANDOMIZER DIFF TO SINGLE CONVERTER D02AU1417 Figure 2. Pin connection (top view) N.C. 1 14 SDATA 2 13 SCK 3 N.C. 4 GND_DIG 5 GND_ANA 6 OUTSR Table 2. od 7 FSYNC VDD_DIG 11 N.C. 10 VDD_ANA 9 VCM 8 OUTSL D01AU1276A Input/output power N.C. - - SDATA I I2S digital data input 3 SCK I I2S clock input 4 N.C. - - 5 GND_DIG P Digital ground 6 GND_ANA P Analog ground 7 OUTSR O Right channel single ended output 8 OUTSL O Left channel single ended output 9 VCM P Reference 1.65 V externally filtered 10 VDD_ANA P Analog 3.3 V supply 11 N.C. - - 12 VDD_DIG P Digital 3.3 V-supply 13 FSYNC I I2S Left-right channel selector 14 RESETN I Reset (active low) 2 b O -O RESETN Pin name 1 e t e l so t c u Pin function Pin # (s) bs u d o r P e t e l o 12 ANALOG OUTPUT ) s ( ct 3rd CHEBYSHEV SC FILTER Pr Description 3/12 Electrical specification TDA7535 2 Electrical specification 2.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol Parameter -0.5 to +4.6 -0.5 to +4.6 V V Power supplies Vaio Analog input and output voltage -0.5 to (VCC+0.5) V Vdio Digital input and output voltage -0.5 to (VDD+0.5) Vdi5 Digital input voltage (5 V tolerant) -0.5 to 6.5 Operating junction temperature range -40 to 125 (s) Tstg °C °C t e l o ) (s t c u od Pr Rth j-amb V Operation at or beyond these limit may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. Thermal data Symbol -55 to 150 V r P e Thermal data Table 4. ct u d o Storage temperature Warning: 2.2 Unit VDD VCC Tj Digital Analog Value s b O Parameter Thermal resistance junction to ambient (1) Value Unit 85 °C/W e t e ol Recommended DC operating conditions 1. In still air. 2.3 s b O Table 5. Recommended DC operating conditions Symbol Parameter VDD VCC 4/12 Test condition Min. Typ. Max. Unit 3.3 V digital power supply voltage 3.15 3.3 3.45 V 3.3 V analog power supply voltage 3.15 3.3 3.45 V TDA7535 Electrical specification 2.4 Power consumption Table 6. Power consumption Symbol Idd Parameter Test condition Total maximum current Min. Power supply @ 3.3 V and Tj = 125 °C 2.5 General interface electrical characteristics Table 7. General interface electrical characteristics Symbol Parameter Test condition lil Low level input current without pull-up device Vi = 0 V(1) lih High level input current without pull-up device Vi = Vdd (1) I/O latch-up current V < 0 V, V > Vdd Ilatchup Electrostatic protection Vesd Leakage, 1 Min. Max. Unit 21.5 25 mA Typ. Max. Unit 1 μA 1 μA ) s ( ct u d o r P e 200 μA(2) Typ. t e l o mA 2000 V 1. The leakage currents are generally very small,