LC78815M SANYO

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SANYO Two-channel, 16-bit D/A Converter for Digital Audio Applications Overview Package Dimensions The LC78815M is a two-channel, 16-bit D/A converter for unit: mm digital audio applications. It incorporates two, indepen- dent dynamic level-shift converters, each comprising a 3036B-MFP20 512-element resistor string, a 3-bit PWM circuit and a 4- bit level shifter. {L¢78815¢] The LC78815M reads 2s complement serial input data at a “a ARARARAAR. sampling rate of 400kHz. It features 0.09% maximum il T total harmonic distortion, good channel separation and Bo excellent signal-to-noise ratio. The channel outputs are a we synchronized, © 4 LI ‘HERR REE EH Bo Features F 12.6 off O15. Cee | * Two-channel 16-bit D/A conversion bd rare * 2s complement serial input data 0.35 1.27 * Zero phase difference between left and right channels SANYO: MFP20 * 8-times oversampling at 400kHz + No external sample-and-hold circuit required + Low-power silicon-gate CMOS process. Pin Assignment * Single SV supply + 20-pin MFP cHiout [1] cH20UT REFH [19] NC Vref [ig] Vref. avoo [4] AGN yroK/woLk [5] REFL. pata [6] Lc7BB15M GND DATAR [i4) MovE2 scik [8] MODE sysc.k [9] FSEL OVvoo [io] ii) TsTouT Top view SANYO Electric Co., Ltd. Semiconductor Business Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 71696HA (ID) / D1694TH (ID) / JN7241 No. 3744—1/10

Absolute Maximum Ratings at Ta = 25°C Oc Slorage temperature range 40 10 +125 Allowable Operating Ranges at Ta = 25°C ee eee DC Characteristics at Ta = -30 to +75°C, Vpp = 4.5 to 5.5V, Vgg = OV AC Characteristics at Ta = —30 to +75°C, Vpp = 4.5 to 5.5V, Vss = OV | me | mba | ome Le | chock pews on p= f= | | bw fae a ° tromwou,owaorma 22 | = f= | Electrical Characteristics at Ta = 25°C, Vpp = 5.0V | mo a [Resouton Pe Contersion Fequney a Tota harmonic istorton 1h, 8 | = | oo [om Te Soratto-cise rao [sw fuse we Futsal up votege Pows ft ee Power dsipaton a 14g = 88.2kHz No, 3744—2/10

. VrefH VrefL TSTOUT MODET 3 PWM 3 MODE2 Dac FSEL Timing SYSCLK Control BCLK and LRCK/WCLK Test R-String R-String Dac DAC Arak sipo Resistor Level Shift Level Shift ca DO 16 16 on tates Switching Characteristics ova a eenenen ‘i teow teow BCLK F Via (1,5¥) LRCK/WCLK , | Vru (1.5¥) DATAL DATAR Vin (1,5¥) a TS 77 TY

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shift D/A converter and output buffer amplifier. Each 16- __ ferent section of the D/A converter, as shown in Figure 1. Figure 1. D/A converter into DATAL and DATAR, and when HIGH, data is age levels between Vj and V3. clocked in parallel to DATAL. The LC78815M supports the data formats shown in Fig- a . by D0 to D3 of the input word. value resistors and is driven by D7 to D15 of the input | VRy is constant.

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Figure 2. Alternate timing mode 1 Figure 3. Alternate timing mode 2

Figure 4. Alternate timing mode 3

Figure 5. Alternate timing mode 4 Figure 6, Simultaneous timing mode 1

3 Py 2 & 35 x = & 335 23

Figure 7. Simultaneous timing mode 2 Figure 8. Simultaneous timing mode 4

Ensure that the digital and analog ground lines are sepa- rate, and that DGND and AGND are connected correctly. Supply Voltage Use a high-stability, low-impedance supply for reference and supply voltages. AVDD and DVDD should be con- nected to the same supply to prevent possible latch-up. Sample Application Circuit DVo0 AVoo O cHIOUT 47 {1 | cHiouT CH20UT © cH20uT an {2 | REFH ne [19] V acnt [4] Avoo AGND Oo {5} LRcK/weLk REFL, per ce [6 | vataL ocno [75] ° bara Y 900 =/0 fe] ecik Monet [13] 3 | LPF: Low-pass filter Oo oVoo retour fii] OVo0= AVoo=8.0 (V) O

0 LC78815M

No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Mi Anyone purchasing any products described or contained herein for an above-mentioned use shall: © Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTO, §its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: ® Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., UID, its affiliates, subsidiaries and distributors or any of their officers and employees, jointly or severally. Mi Information (including circuit diagrams and circuit parameters) herein is for example only; itis not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties, This catalog provides information as of July, 1996. Specifications and information hereln are subject to change without notice. No. 3744—10/10