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| Headphone Amplifiers Digital Input Class-D Headphone Amplifier BU7839GVW No.10102EAT03 Description Most suitable for long duration reproduction of digital audio because digital audio data is taken as its input and low power consumption is realized.BU7839GVW has Stereo Audio DAC and HP amp functions for digital audio playback. Pop sound in ramp-up period is reduced due to built-in start-up sound reduction circuit or transistor for mute. Also, Built-in digital volume which can control L-ch & R-ch separately. Features 1) With Stereo Audio DAC and HP amp functions 2) Most suitable for long duration reproduction of digital audio because digital audio data is taken as its input and low power consumption is realized 3) Pop sound in ramp-up period is reduced due to built-in start-up sound reduction circuit or transistor for mute 4) Built-in digital volume which can control L-ch & R-ch separately Immediate switching and zero cross switching for reduction of clicking sound at the time of gain change Gain change methods of soft switching can be selected with registers 5) Sampling frequency compatible with 8kHz-48kHz 6) Compatible with master slave with built-in PLL 7) Built-in soft mute function 8) Compatible with full front and full back formats 9) Compatible with 16, 18 & 24bit formats 10) Compatible with fs=32kHz,44.1kHz,48kHz with de-emphasis function 11) 2wire CPU I/F (2 addresses selectable 33h, 36h) Functions Stereo Audio DAC + HPamp 2wire CPU I/F Serial audio I//F Interpolator Modulator Level Shifter PLL www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 1/15 2010.05 - Rev.A BU7839GVW Absolute maximum rating Parameter Analog power supply voltage Digital power supply voltage Digital IO power supply voltage Terminal applied voltage 1 Terminal applied voltage 2 *1 Allowance loss Storage temperature range Operation temperature range Symbol AVDD DVDD DVDDIO VIN1 VIN2 Pd Tstg Topr Ratings -0.3 4.5 -0.3 2.1 -0.3 4.5 DVSS-0.3 DVDDIO+0.3 DVSS-0.3 4.5 520 *2 Unit V V V V V mW Technical Note -50 125 -30 85 * 1 SDA,SCL terminal * 2 When you use at above Ta = 25 degree, 52mW are reduced concerning 1degree When you mount 114.6mm x 76.2mm x 1.6mm Note:When you use under the conditions which exceed this value, there are times when the device is destroyed. In addition usual operation is not guaranteed. Recommended operating range Parameter Analog power supply voltage Digital IO power supply voltage Digital power supply voltage Symbol AVDD DVDDIO DVDD Limits Min 2.5 DVDD 1.35 Typ 2.8 1.50 Max 3.0 3.0 1.65 Unit V V V www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 2/15 2010.05 - Rev.A BU7839GVW External size figure Technical Note 1PIN MARK 4.00.1 4.00.1 7839 LOTNo. 0.08 0.9 MAX. S 0.08 S A 0.70.1 0.70.1 P=0.65x4 0.65 24-0.330.05 0.08 S AB B P=0.65x4 0.65 (Unit : mm) Fig.1 External size figure www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 3/15 2010.05 - Rev.A BU7839GVW Block diagram Technical Note MUTE_R MCLK Interpolator BCLK LRCLK SDI Audio I/F VDD_R Modulator Level Shifter OUT_R VSS_R MUTE_L VDD_L DVDDIO DVSSIO 256fs Interpolator Modulator Level Shifter OUT_L VSS_L PLLVDD SCL SDA NRST 2wire CPU I/F Register Power on/off control PLL PLLCAP DVSS ADR TEST DVDD DVSS REFCLK 12MHz in Fig. 2 Block diagram Description of each block 2wire CPU I/F Interface with CPU, 2-wire control Write/read possible Device address is 2-address selectable (33h,36h) with ADR terminal Register This LSI is controlled all by register Write/read by 2wire CPU I/F Audio I/F Compatible with three modes of full front, full back and IIS Sampling frequency compatible with 8kHz48kHz Interpolator,Modulator Variable over sampling, Order-variable modulator Optimum value is selected internally and automatically Level Shifter Level conversion in 3V series of analogue output Built-in mute transistor for start-up sound reduction PLL REFCLK terminal is taken as reference clock and 256fs is created It becomes the default setting when 12MHz is inputted to REFCLK Please change each setting if any frequency other than 12MHz is inputted to REFCLK www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 4/15 2010.05 - Rev.A BU7839GVW Terminal table No A1 B3 A2 C2 C1 B4 A5 B2 A3 C3 D1 A4 B5 D5 C5 C4 D4 E4 E5 D3 E1 E2 D2 E3 Terminal name MCLK BCLK LRCLK SDI SCL SDA NRST ADR TEST DVDD DVSS Function Audio I/F Master clock Audio I/F Bit clock Audio I/F LR clock Audio I/F Serial data 2wire CPU I/F serial clock 2wire CPU I/F serial data Reset Device address select test pin Digital core VDD Digital core VSS Classifi Digital/ cation Analog A B B E C D E E E H F G I G I D D D D D D D D D D D D D A A D A A A A A A A A In/Out Rest middle/ rear Initial value In/Out in 256fs In/Out In/Out In In In/Out In In In In Out Out Out Out Out Hiz Hiz Hiz Hiz Hiz in in in L: reset 64fs fs Technical Note Note DVDDIO Digital IO VDD I/O power supply L:33h or H:36h Please connect to the ground Digital power supply Digital ground Input 10M20MHz PLL power supply PLL, Digital ground Rch power supply For starting sound decrease Rch ground Lch power supply For starting sound decrease Lch ground REFCLK reference clock PLLVDD PLL VDD PLLCAP PLL capacitor DVSS VDD_R OUT_R VSS_R VDD_L OUT_L VSS_L PLL, Digital VSS Analog VDD Rch output Analog VSS Analog VDD Lch output Analog VSS MUTE_R Rch mute MUTE_L Lch mute Terminal equivalent circuit figure DVDDIO DVDDIO LVS A DVSSIO LVS B DVSSIO LVS C DVSSIO PLLVDD DVDDIO LVS D DVSSIO E DVSSIO LVS F PLLVSS VDD_R VDD_R VDD_L VDD_L VDD_R VDD_L DVDDIO G VSS_R VSS_R VSS_L VSS_L H DVSSIO LVS I VSS_R VSS_R VSS_L VSS_L www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 5/15 2010.05 - Rev.A BU7839GVW Application circuit chart Technical Note MUTE_R VDD_R MCLK BCLK DSP LRCLK SDI DVDD2.8V 2.8V 220uF 16 Interpolator Modulator Level Shifter OUT_R VSS_R 100uH 0.1uF Audio I/F MUTE_L VDD_L 2.8V 220uF 100uH 0.1uF 16 DVDDIO Interpolator Modulator Level Shifter OUT_L VSS_L 256fs PLLVDD SCL CPU SDA 2wire CPU I/F Register Power on/off control 0.068uF 2.8V PLL PLLCAP DVSS NRST L: reset ADR Device address L: 33h H: 36h TEST DVDD 1.5V DVSS REFCLK 12MHz in Recommended parts Coil : murata Manufacturing LQH32CN101K23 Schottky diode : ROHM RSX201L-30 Capacitor : Rohm TCTAL0G227M8R-D2 Fig.3 Application circuit chart Measurement circuit chart MUTE_R VDD_R MCLK BCLK DSP LRCLK SDI DVDD2.8V 2.8V 220uF 100uH 0.1uF Interpolator Modulator Level Shifter OUT_R VSS_R 20KHz LPF A-Weight Audio Analyzer 16 Audio I/F MUTE_L VDD_L 2.8V 220uF 100uH 20KHz LPF A-Weight 16 Audio Analyzer DVDDIO Interpolator Modulator Level Shifter OUT_L VSS_L 0.1uF 2.8V 256fs PLLVDD SCL CPU SDA 2wire CPU I/F Register Power on/off control 0.068uF PLL PLLCAP DVSS NRST L: reset ADR Device address L: 33h H: 36h TEST DVDD 1.5V DVSS REFCLK 12MHz in Fig.4 Measurement circuit chart www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 6/15 2010.05 - Rev.A BU7839GVW Technical Note Electrical Characteristic Ta=25degree,DVDD=DVDDIO=1.5V,VDD_R=VDD_L=PLLVDD=2.8V,REFCLK=12MHz,fs=44.1kHz,f=1kHz,Load=16, A-weight,20kHzLPF,Slave mode Limits Parameter Symbol Unit Condition MIN TYP MAX Static consumption current DVDD Static consumption current VDD_R+VDD_L Static consumption current PLLVDD Consumption current DVDD Consumption current VDD_R+VDD_L Consumption current PLL Output amplitude error Channel-to-channel gain error S/N THD+N Channel-to-channel isolation PSRR IDDst ICCst IPLLst IDD ICC IPLL Vout Gerr SN THD Iso Psrr -2 -1 60 -40 65 0.6 2.0 0.8 80 -60 80 0 10 10 10 2.0 6.0 2.5 2 1 A A A mA mA mA dB dB dB dB dB dB Errors with reference to standard values at the time of 0dBFS output are as follows Lch-Rch 0dBFS, A-Weight -3dBFS, A-Weight 0dBFS, 1kHz BPF At the time of standby At the time of standby At the time of standby At the time of 0.1mW output (in slave mode) At the time of 0.1mW output OUT_R OUT_L Level Shifter 2 Lr 100uH 0.1uF 220uF Z (16) Shown in the following table is the standard values of output amplitude if VDD=2.8V, Load impedance Z=16, and Equivalent series resistance is 0.7, 4 or 7. Equivalent series resistance [] 0.0 0.7 4.0 7.0 Standard value of output amplitude [Vpp] 1.24 1.20 1.02 0.90 Standard value of output amplitude [dBv] -7.13 -7.46 -8.87 -9.98 Output power [mW] 12.10 11.21 8.10 6.27 www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 7/15 2010.05 - Rev.A BU7839GVW DC characteristic Ta=25degree,DVDD=DVDDIO=1.5V, VDD_R=VDD_L=PLLVDD=2.8V Standardized values Item Symbol MIN TYP MAX 0.7x Input 'H' Level VIH DVDDIO 0.3x Input 'L' Level VIL DVDDIO 0.8x Output 'H' Level VOH DVDDIO 0.2x Output 'L' Level 1 VOL1 DVDDIO Output 'L' Level 2 0.2x VOL2 (SDA terminal) DVDDIO Table 10 DC characteristic 2wire CPU I/F Part Technical Note Unit V V V V V Note Io=-1mA Io=1mA Io=3mA Device address is "0110011"(33h) or "0110110"(36h), i.e. 33h when ADR terminal is L or 36h when ADR terminal is H. Please don't switch the ADR terminal while 2wire CPU I/F is operating. The transmission rate is compatible with a maximum of 400kbps 2wire CPU I/F device address ADR W/R A7 A6 A5 A4 A3 A2 A1 0 0 1 1 0 0 1 1 0/1 1 0 1 1 0 1 1 0 0/1 Bit transmission The data of 1bit is transmitted while SCL is H. In case of bit transmission, the signal transition of SDA can not be implemented while SCL is H. If SDA changes while SCL is H, START condition or STOP condition is generated, it is interpreted as control signal. SDA SCL SDA stable state: Data is effective SDA change is Possible START condition/STOP condition Data transmission on bus is not implemented while SDA and SCL are H. At this time, if SCL remains to be H and SDA is transited from H to L, then the START condition (S) is attained and so the access is started, and if SCL remains to be H and SDA is transited from L to H, then the STOP condition (P) is attained and so the access is terminated, which is shown below. SDA SCL S START Condition P STOP Condition This device accepts the continuous START condition and the continuous STOP condition. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 8/15 2010.05 - Rev.A BU7839GVW Technical Note Acknowledge After START condition is generated, data is transmitted at 8 bits once. After 8 bit transmission, the transmitter opens SDA, and the receiver returns the acknowledge signal with SDA taken as L. SDA output by transmitter Non-acknowledge SDA output by receiver acknowledge SCL S 1 2 8 Clock ulse for acknowledge 9 STARTCONDITION Write protocol Write protocol is shown below. Register address is transmitted by 1 byte after device address and write command have been transmitted. Third byte writes the data, which is written in by second byte, into internal register, and for fourth byte and subsequent bytes, the register address is incremented automatically. But, the register address becomes 00h by the transmission of 1 byte after the register address has become the final address (6Ch). The address is incremented after the transmission is over. S 0 1 1 0 0 1 1 0 A A7 A6 A5 A4 A3 A2 A1 A0 A D7 D6 D5 D4 D3 D2 D1 D0 A Register address data Register address increment Transmitting set is on Master side A = Acknowledge A = Non-acknowledge S = START condition P = STOP condition Sr= Retransmission starting condition D7 D6 D5 D4 D3 D2 D1 D0 A data P Device address R/W=0 (Write in) Register address increment Transmitting set is on Slave side Readout protocol Readout starts from 1 byte after device address and R/W bit have been written in. For the address after the readout register is finally accessed and the subsequent addresses, the data of the addresses that have been incremented is read out. As the readout of 1 byte after the address has become the final address, 00h is read out. The address is incremented after the transmission is over. S 0 1 1 0 0 1 1 0 A D7 D6 D5 D4 D3 D2 D1 D0 A data Register address increment A = Acknowledge A = Non-acknowledge S = START condition P = STOP condition Sr= Retransmission starting condition D7 D6 D5 D4 D3 D2 D1 D0 A data Register address increment P Device address R/W=0 (Write in) Transmitting set is on Master side Transmitting set is on Slave side www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 9/15 2010.05 - Rev.A BU7839GVW Technical Note Compound readout protocol After internal address is specified, create the retransmission starting condition, change the data transmitting direction and implement the readout. Subsequently, the data of the address that has been incremented is read out. As the readout of 1 byte after the address has become the final address, 00h is read out. The address is incremented after the transmission is over. After retransmission starting condition, compound write is possible with R/W=0 (write in). S 0 1 1 0 0 1 1 0 A A7 A6 A5 A4 A3 A2 A1 A0 Register address A Sr 0 1 1 0 0 1 1 1 A Device address R/W=0 (White in) Slave address R/W=1(Read out) D7 D6 D5 D4 D3 D2 D1 D0 Data A D7 D6 D5 D4 D3 D2 D1 D0 Data A P Register address increment Register address increment Transmitting set is on Master side Transmitting set is on Slave side A = Acknowledge A = Non-acknowledge S = START condition P = STOP condition Sr= Retransmission starting condition Timing diagram (Repeated) START condition BIT 7 t LOW BIT 6 1/f SCLK Acknowledge STOP condition t SCL SDA t SU;STA t HIGH BUF t HD;STA t SU;DAT t HD;DAT t SU;STO Ta=25 degree,DVDD=DVDDIO=1.8V, VDD_R=VDD_L=PLLVDD=3.0V Item SCL clock frequency Hold time of START condition "" Level time of SCL "H" Level time of SCL Setup time of repeated START condition Data hold time 1 Data setup time Setup time of STOP condition Bus opening time between STOP condition and START condition *1 The maximum tHD;DAT is not allowed to exceed the "L" level time tLOW of SCL signal Symbol fSCLK tHD;STA tLOW tHIGH tSU;STA tHD;DAT tSU;DAT tSU;STO tBUF Standard mode min 0 4.0 4.7 4.0 4.7 0.1 250 4.0 4.7 max 100 3.45 - High-speed mode min 0 0.6 1.3 0.6 0.6 0.1 100 0.6 1.3 max 400 0.9 - Unit kHz s s s s s ns s s www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 10/15 2010.05 - Rev.A BU7839GVW Audio I/F part At slave mode. Ta=25degree ,DVDD=DVDDIO=1.5V, VDD_R=VDD_L=PLLVDD=2.8 V Limit Parameter Symbol MIN TYP MAX MCLK frequency *1 MCLK Duty Cycle BCLK frequency BCLK Duty Cycle LRCLK frequency LRCLK Hold Time SDI Setup Time SDI Hold Time Fmclk Dmclk Fbclk Dbclk Flrclk Thdlr Tsusdi Thdsdi 2.048 40 0.512 40 8 80 80 80 18.432 60 3.072 60 48 - Technical Note Unit MHz % MHz % kHz ns ns ns Condition Fmclk = 256fs or 384fs Fbclk = 64fs Flrclk = 1fs *1 It is not necessary to adjust the phase of MCLK and BCLK and LRCLK, but it is necessary to be something related to synchronization Flrclk LRCLK Thdlr Thdlr BCLK Fbclk SDI Tsusdi Thdsdi Fig.5 Audio I/F AC timing(at slave mode) At master mode Ta=25degree,DVDD=DVDDIO=1.5V, VDD_R=VDD_L=PLLVDD=2.8V Limit Parameter Symbol MIN TYP MAX BCLK frequency LRCLK frequency SDI Setup Time SDI Hold Time Fbclk Flrclk Tsusdi Thdsdi 0.512 8 80 80 3.072 48 - Unit MHz kHz ns ns Condition Fbclk = 64fs Flrclk = 1fs Flrclk LRCLK BCLK Fbclk SDI Tsusdi Thdsdi Fig.6 Audio I/F AC timing(at master mode) www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 11/15 2010.05 - Rev.A BU7839GVW Audio I/F format At bit[1:0]="00" (16bit length) Rear stuffing format LRCLK 0 1 2 3 13 14 Technical Note Lch 15 16 17 18 29 30 31 0 1 2 3 13 14 Rch 15 16 17 18 29 30 31 0 BCLK SDI Don't care Don't care Don't care 15 14 13 2 1 0 Don't care Don't care 15 14 13 2 1 0 Front stuffing format LRCLK 0 1 2 3 13 14 Lch 15 16 17 18 29 30 31 0 1 2 3 13 14 Rch 15 16 17 18 29 30 31 0 BCLK SDI 15 14 13 2 1 0 Don't care Don't care 15 14 13 2 1 0 Don't care Don't care 15 IISformat LRCLK 0 1 2 3 4 14 Lch 15 16 17 18 19 30 31 0 1 2 3 13 14 Rch 15 16 17 18 19 30 31 0 BCLK SDI Don't care 15 14 13 2 1 0 Don't care Don't care 15 14 13 2 1 0 Don't care Don't care At bit[1:0]="01" (18bit length) Rear stuffing Format LRCLK 0 1 2 3 11 12 Lch 13 14 15 16 29 30 31 0 1 2 3 11 12 13 Rch 14 15 16 29 30 31 0 BCLK SDI Don't care Don't care Don't care 17 16 15 2 1 0 Don't care Don't care 17 16 15 2 1 0 Front stuffing format LRCLK 0 1 2 3 15 16 Lch 17 18 19 20 29 30 31 0 1 2 3 15 16 17 Rch 18 19 20 29 30 31 0 BCLK SDI 17 16 15 2 1 0 Don't care Don't care 17 16 15 2 1 0 Don't care Don't care 15 IIS Format LRCLK 0 1 2 3 4 16 Lch 17 18 19 20 21 30 31 0 1 2 3 13 16 17 Rch 18 19 20 21 30 31 0 BCLK SDI Don't care 17 16 15 2 1 0 Don't care Don't care 17 16 15 2 1 0 Don't care Don't care www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 12/15 2010.05 - Rev.A BU7839GVW At bit[1:0]="10" (20bit length) Rear stuffing format LRCLK 0 1 2 3 10 11 Technical Note Lch 12 13 14 15 29 30 31 0 1 2 3 13 14 15 Rch 16 17 18 29 30 31 0 BCLK SDI Don't care Don't care Don't care 19 18 17 2 1 0 Don't care Don't care 19 18 17 2 1 0 Front stuffing format LRCLK 0 1 2 3 17 18 Lch 19 20 21 22 29 30 31 0 1 2 3 17 18 19 Rch 20 21 22 29 30 31 0 BCLK SDI 19 18 17 2 1 0 Don't care Don't care 19 18 17 2 1 0 Don't care Don't care 19 IIS format LRCLK 0 1 2 3 4 18 Lch 19 20 21 22 23 30 31 0 1 2 3 13 18 19 Rch 20 21 22 23 30 31 0 BCLK SDI Don't care 19 18 17 2 1 0 Don't care Don't care 19 18 17 2 1 0 Don't care Don't care At bit[1:0]="11" (24bit length) Rear stuffing format LRCLK 0 1 2 3 4 5 6 Lch 7 8 9 10 29 30 31 0 1 2 3 4 5 6 7 Rch 8 9 10 29 30 31 0 BCLK Don't care SDI Don't care 23 24 2 1 0 Don't care 23 22 2 1 0 Front stuffing format LRCLK 0 1 2 3 22 23 Lch 24 25 26 27 28 29 30 31 0 1 2 3 22 23 24 Rch 25 26 27 28 29 30 31 0 BCLK SDI 23 22 21 1 0 Don't care 23 22 21 1 0 Don't care 23 IIS format LRCLK 0 1 2 3 4 23 Lch 24 25 26 27 28 29 30 31 0 1 2 3 13 23 24 Rch 25 26 27 28 29 30 31 0 BCLK Don't care SDI 23 22 21 1 0 Don't care 23 22 21 1 0 Don't care Fig.7 Audio I/F Format www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 13/15 2010.05 - Rev.A BU7839GVW PLL Part Technical Note Ta=25degree,DVDD=DVDDIO=1.5V, VDD_R=VDD_L=PLLVDD=2.8V, REFCLK=12MHz, fs=44.1kHz specification Item Symbol Unit Condition MIN TYP MAX Lock up time BCLK Duty Cycle Tlock Dbclk 40 15 60 msec % PLLCAP 0.068F REFCLK 12MHz 1/N n32 n44 n48 refclk_enb PD VCO 1/M m32 m44 m48 div_vco fs=48k,44.1k,32k fs 1/2 fs=24k,22.05k,16k 1/4 fs=12k,11.025k,8k 1/4 1/256 slave MCLK 0 1 256fs/384fs mclk_enb BCLK 64fs p_pll LRCLK fs slave D-Class Logic Fig.8 Block diagram of PLL part www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 14/15 2010.05 - Rev.A BU7839GVW Ordering part number Technical Note B U 7 Part No. 8 3 9 G V W - E 2 Part No. Package GVW:SBGA024W040 Packaging and forming specification E2: Embossed tape and reel SBGA024W040 1PIN MARK 4.0 0.1 Tape 0.9MAX. 4.0 0.1 Embossed carrier tape (with dry pack) 2500pcs E2 The direction is the 1pin of product is at the upper left when you hold Quantity Direction of feed S 0.08 S 0.70.1 24- 0.330.05 0.08 M S AB E D C B A 12345 0.65 B P=0.65x4 0.7 0.1 A P=0.65x4 0.65 0.08 ( reel on the left hand and you pull out the tape on the right hand ) 1pin Direction of feed (Unit : mm) Reel Order quantity needs to be multiple of the minimum quantity. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 15/15 2010.05 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. R1010A |
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