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BU8732AKV
Communication ICs
CODEC IC for digital mobile phone
BU8732AKV
BU8732AKV is a PCM codec IC for digital cellular phones. This includes plenty of analog input / output functions such as a 14bit precision linear. / A-LAW codec, a microphone amplifier with two systems, amplifiers for speaker and earphone and a switch transistor for driving a ringer. This IC is the most suitable for both PDC system and CDMA system cellular phones.
Application Digital cellular phones with CDMA system, Digital cellular phones with PDC system.
Features 1) +3V single power supply. (VDD=2.7 to 3.3V) 2) 14bit precision linear / A-LAW codec. 3) Transmission filter of the codec block is in conformity to the ITU-T recommendation G. 714. 4) Built-in PLL circuit for system clock generation. 5) Built-in DSP I/F which is in conformity with PDC and N-CDMA. 6) Arbitrary setting of the clock frequency of PCM data transmission is allowed : / A-LAW 64kHz to 2048kHz Linear 128kHz to 2048kHz 7) Plenty of input / output analog functions : * Two systems of built-in microphone amplifier (differential input type, single input type) * Built-in speaker amplifier for receiver (32 BTL type) * Built-in speaker amplifier for earphone (32 single type) * Built-in speaker amplifier for REXT of call receiving system (600) * Built-in electronic volumes for gain adjustment. (Call-receiving system, call sending system, TONE system) * Built-in input / output circuit for data signal which allows external connection. * Pop noise of REXT earphone and receiver outputs at the time of switching on and off the power supply is reduced by means of soft mute. 8) A built-in function to generate DTMF signals and musical scale tones is provided in the tone signal generating block. 9) Built-in switch transistor for driving a ringer. 10) VQFP 48 pin package.
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BU8732AKV
Communication ICs
Absolute maximum rating (Ta=25C unless specified particularly)
Parameter Digital power supply voltage Analog power supply voltage Digital pin apply voltage Analog pin apply voltage Input current Power dissipation Storage temperature range Operation temperature range Symbol DVDD RXVDD TXVDD VTD VTA IIN Pd Tstg Ta Limits -0.3 to +4.5 -0.3 to +4.5 -0.3 to +4.5 DVSS-0.3 to DVDD+0.3 RXVSS-0.3 to RXVDD+0.3 TXVSS-0.3 to TXVDD+0.3 -10 to +10 400 1 -50 to +125 -30 to +85 Unit V V V V V V mA mW C C
1 Drops by 4.0mW per 1C when used at more than Ta=25C.
Recommendable operation condition (Ta=25C unless specified particularly)
Parameter Digital power supply voltege Analog power supply voltege Symbol DVDD RXVDD TXVDD
Radiation resistance is not included design.
Min. 2.7 2.7 2.7
Typ. - - -
Max. 3.3 3.3 3.3
Unit V V V
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BU8732AKV
Communication ICs
Block diagram
TEXT for CPU frame syne signal 8kHz C11
0.01
+
TEXTADD
TEXTDO
R7
TAUDO
PLLLPF
TEXTDI
FSYNC
36
35
34
33
32
31
30
29
28
27
26
MIC2IN
MIC20
TXVDD
SDA
SRL
STB
25
SW8 MIC10 reset
+
37 XPRSTB 38
SW12 - CPU I / F PLL
+
R8
C10
24 + SW0 MIC Amp2 MIC1IN 23
R6 C9 C8 R5
+ + + + + + +
DVSS 39 DVDD 40 PCMOUT DSP 41 PCMIN 42 DCLK PWM 43 CPUSEL 44
ERP0 SPP0
Amp1 DTMF / TONE
+ -
1 2 3 EV3 MIC Amp1 + - Vref / COMMON SOFTMUTE EAmp1 EAmp2 10 11
SPCON SPCOP
MIC1IP 22 TXVSS 21 TXREF
DSP I / F
BPF
A/D
AAF
EV0
EV7 EV4 LPF D/A EV1
RG0 1
RGPULSE R9 45 RINGER1 R10 46 RINGER2
3
JAmp -
RINGER
EXTSEL
Amp3
+
EV6
EV5
47 (20) RINGER3
RAmp SW9A SW9B EV2 Amp5 -
+
Amp4 -
+
48 PVSS
RIN
AUDVR
ERPO
ERPN
REXTDI
1
REXTDO
2
3
+
4
+
AUDO
5
+
6
7
8
9
SPPO
EXTO
SPPN
R2
R4 C5 C6
REXT Power on by REFPON Power on by VCPON Power on by TGPON Power on by VCPON or TGPON Power on by RXPON Power on by SPCON Power on by EARON R1 C1 C2 R3 C3 C4
+ -
+ -
+
-
2
SW4
7
6
5
ERMT
SPMT
+
+ + 12 SPC (32)
20 REFC 19
1
2.2 CODECREF 18 RXREF 17 SMUTE 16 RXVDD 15 EARO 14 RXVSS 13 EAR (32) 0.22 1 1
+
C7
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BU8732AKV
Communication ICs
Pin descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 Pin name REXTDI REXTDO EXTO RIN AUDO AUDVR ERPN ERPO SPPN SPPO SPCOP SPCON RXVSS EARO RXVDD SMUTE RXREF CODCREF REFC TXREF TXVSS MIC1IP MIC1IN MIC1O MIC2IN MIC2O TAUDO TXVDD TEXTADD TEXTDI TEXTDO PLLLPF FSYNC STB SCL SDA XPRSTB DVSS DVDD PCMOUT PCMIN I/O I/O I/O O I O O I O I O O O - O - I O O O O - I I O I O O - I I/O I/O I/O I I I/O I/O I - - O I I Terminal function
Minimum load resistance[] Maximum load capacitance[F]
Input of the data signal of receive Output of the data signal of receive Amplifier output for the gain adjustment of receive signal Direct input of the voice of receive Direct output of receive signal External output of receive signal Inverted amplifier input for the earphone gain adjustment Amplifier output for the earphone gain adjustment Inverted amplifier input for the speaker gain adjustment Amplifier output for the speaker gain adjustment Non-ineverted speaker amplifier output for the receiver Inverted speaker amplifier output for the receiver Analog grounding for the receive Speaker amplifier output for the earphone Analog power source for the receive Time constant terminal for the soft mute setting Analog reference voltage output for the receive Analog reference voltage output for codec Analog reference voltage output Analog reference voltage output for the transmit Analog grounding for the transmit Non-inverted input of the microphone amplifier 1 Inverted input of the microphone amplifier 1 Output of microphone amplifier 1 Inverted input of the microphone amplifier 2 Output of microphone amplifier 2 output External output of transmit signal Analog power source for the transmit Additive input of the transmit signal Input of the data signal of transmit Output of the data signal of transmit Filter connection input/output for PLL PLL reference clock input Strobe input for CPU I/F Shift clock input for CPU I/F Address data input for CPU I/F System reset input (L: reset) Grounding for digital Power supply for digital Output of PCM signal Input of PCM signal Shift clock input for PCM signal
- - 600 - 50k 50k - 50k - 50k 30(BTL) 30(BTL) - 30 - - - - - - - - - 50k - 50k 50k - - - - - - - - - - - - - - -
- - - - 50p 50p - 50p - 50p - - - - - 0.221 11 11 2.21 11 - - - 50p - 50p 50p - - - - 0.011 - - - - - - - - - -
DCLK 42 1 Standard value
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Communication ICs
Pin No. 43 44 45 46 47 48 Pin name CPUSEL RGPULSE RINGER1 RINGER2 RINGER3 PVSS I/O I O O O O - Terminal function
Minimum load resistance[] Maximum load capacitance[F]
Fixed to GND, Fixed "L" Pulse output for the ringer Open drain output of the ringer driving transistor Open drain output of the ringer driving transistor Open drain output of the ringer driving transistor Grounding for ringer
- - 100(at 3V) 60(at 3V) 20(at 3V) -
- - - - - -
1 Standard value
Electrical characteristics (Ta=25C, DVDD=RXVDD=TXVDD=3.0V, FSYNC=8kHz, gain 0dB unless specified particularly)
Parameter Symbol IDD1 IDD2 IDD3 Current consumption(Note 1) IDD4 IDD5 IDD6 IDD7 IDD8 Digital "H" level input voltage Digital "L" level input voltage Digital "H" level input current Digital "L" level input current Digital "H" level output voltage Digital "L" level output voltage VIH VIL IIH IIL VOH VOL Min. - - - - - - - - 0.8DVDD - - -10 DVDD-0.5 - Typ. 8.0 7.0 6.0 5.4 5.1 3.7 3.3 0.1 - - - - - - Max. 11.5 10.2 8.6 7.8 7.3 5.3 4.8 20 - 0.2DVDD 10 - - 0.5 A V V A A V V VIH=DVDD VIL=0V IOH= -1mA IOL=1mA mA Unit Conditions Full operation (Note2) Reference / Voice / SPC ON (Note2) Reference / Voice / EAR ON (Note2) Reference / Voice / RAMP ON (Note2) Reference / Voice ON (Note2) Reference / Tone ON (Note2) Reference ON (Note2) All power down, FSYNC, Fixed DCLK terminal
1) Power supply voltage (DVDD, RXVDD, TXVDD) is 3V. Digital and analog output terminals are free from load. All the digital terminals except FSYNC. CLK terminal are connected to either DVDD or DVSS.
Analog terminals are connected with an appropriate resistance to TXREF or RXREF. The soft mute is in the canceled status. (SMUTE="0") 2) FSYNC=8kHz, DCLK=256kHz
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Communication ICs
Electrical characteristics (Ta=25C, DVDD=RXVDD=TXVDD=3.0V, FSYNC=8kHz, DCLK=256kHz, gain 0dB, input signal frequency=1 kHz, 30 kHz LFP, specified particularly) < CODEC block >
Parameter Transmit signal-todistortion ratio TEXTADDPCMOUT Receive signal-todistortion ratio PCMINAUDO Transmit Gain error TEXTADDPCMOUT SDR SDT Symbol Min. 35 29 24 35 29 24 -0.3 GTX -0.6 -1.6 -0.3 Receive Gain error PCMINAUDO Transmit reference signal level Receive reference signal level GRX -0.6 -1.6 VITX 0.257 Typ. - - - - - - - - - - - - 0.346 Max. - - - - - - 0.3 0.6 1.6 0.3 0.6 1.6 0.436 Vrms dB dB dB dB Unit 1020Hz input (LINEAR) 3) Conditions 0 to -40dBm0 -40dBm0 -45dBm0 0 to -40dBm0 -40dBm0 -45dBm0 +3 to -40dBm0 -40 to -50dBm0 -50 to -55dBm0 +3 to -40dBm0 -40 to -50dBm0 -50 to -55dBm0 TEXTADD PCMOUT PCMINAUDO 0.06kHz 0.2kHz 1020Hz, 0dBm0 dB Input reference EV0=0dB, (LINEAR) 0.3 to 3.0kHz 3.4kHz 3.6kHz 3.78kHz 0.3 to 3.0kHz 1020Hz, 0dBm0 dB Input reference EV1=0dB, (LINEAR) 3.4kHz 3.6kHz 3.78kHz dBV EV0=0dB, (LINEAR) 3) PCMIN= "L" fixed, EV1=0dB, (LINEAR) 3) SPCOP-SPCON, RL=32 Connect SPPN-SPPO 3) EARO, RL=32 Connect ERPN-ERPO 3)
1020Hz input (LINEAR) 3)
1020Hz, (LINEAR) 3) Reference level= -10dBm0 1020Hz, (LINEAR) 3) Reference level= -10dBm0 1020Hz, 0dBm0 EV0=0dB, (LINEAR) 3) 1020Hz, 0dBm0 EV1=0dB, (LINEAR) 3)
VORX
0.291 24
0.346 - - - - - - - - - - - - -90 -93
0.411 - 2.5 0.3 0.9 - - 0.3 0.9 - - -65 -70 - -
Vrms
Transmit Gain relative to input signal gain at 1.02KHZ TEXTADDPCMOUT GRTX
0 -0.3 -0.3 0 6.5 -0.3 GRRX -0.3 0 6.5 VNTX - - -
Receive Gain relative to input signal gain at 1.02KHZ PCMINAUDO Transmit noise level TEXTADDPCMOUT Receive noise level PCMINAUDO Noise level of speaker amplifier for receiver Noise level of speaker amplifier for earphone
VNRX
dBV
VNSPC
dBV
VNEAR
-
dBV
3)
Using C-MESSAGE filter
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Communication ICs
< Analog element (1) >
Parameter Symbol GCMIC1 Min.
40 40 40 40 50k 50k 600 30 30 - - 0.707
Typ.
- - - - - - - - - - - - -
Max.
- - - - - - - - - 50p 50p - - - - -
Unit
Conditions MICAMP1, THD<5%
Max. Closed loop gain
GCMIC2 GCAMP4 GCAMP5 RLTX RLRX
dB
MICAMP2, THD<5% AMP4, THD<5% AMP5, THD<5% MIC10, MIC20, TAUDOGND AUDO, AUDVR, ERPO, SPPO GND
Min. Load impedance
RLEXT RLSPC RLEAR CLTX
EXTO
GND
SPCOP-SPCON EARO-GND MIC10, MIC20, TAUDO F AUDO, ERPO, SPPO MIC10, MIC20, TAUDO RL=50k, CL=50pF, THD<5% AUDO, AUDVR, ERPO, SPPO RL=50k, CL=50pF, THD<5% Vrms SPCOP-SPCON RL=32, THD<5% GND GND
Max. Load capacitance
CLRX VOTX
VORX
0.707
Max. Output level
VOSPC
0.791
1.130
VOEAR
0.485
0.693
EARO RL=32, THD<5%
VOEXT
0.393 -1.5 -1.5 -1.5 -1.5
0.562 - - - -
EXTO RL=600, THD<5% TEXTADDTAUDO SW0=SW12=ON, SW1=SW2=SW3=OFF
GVAMP11
1.5
Absolute gain error of AMP1
GVAMP12
1.5
dB
MIC20TAUDO SW1=SW12=ON, SW0=SW2=SW3=OFF
GVAMP13
1.5
MIC10TAUDO SW2=SW12=ON, SW0=SW1=SW3=OFF
Absolute gain error of AMP3
GVAMP31
1.5
dB
RINAUDO SW7=ON, SW4=SW5=SW6=OFF
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BU8732AKV
Communication ICs
< Analog element (2) >
Parameter Symbol GEV0H GEV1H GEV2H Min.
10.8 1.8 -1.2 4.8 4.8 -1.2 -1.2 -6.2 -20.2 -5.2 -32.2 -27 -27 -16.2 -16.2 -21.2 - - - -
Typ.
12 3 0 6 6 0 0 -5 -19 -4 -31 -25 -25 -15 -15 -20 - - - -
Max.
13.2 4.2 1.2 7.2 7.2 1.2 1.2 -3.2 -17.8 -2.8 -29.8 -23 -23 -13.8 -13.8 -18.8 -60 -60 -60 -60
Unit
Conditions EV0=12dB, TEXTADDPCMOUT EV1=3dB, PCMINAUDO EV2=0dB, RINAUDVR
Max. Volume level
GEV3H GEV4H GEV5H GEV6H GEV7H GEV0L GEV1L GEV2L
dB
EV3=6dB, DTMF / TONETAUDO EV4=6dB, DTMF / TONEAUDO EV5=0dB, SPPOSPCON EV6=0dB, ERPOEARO EV7= -5dB, TEXTADDAUDO, EV0=0dB EV0= -19dB, TEXTADDPCMOUT EV1= -4dB, PCMINAUDO EV2= -31dB, RINAUDVR EV3= -25dB, DTMF / TONETAUDO EV4= -25dB, DTMF / TONEAUDO EV5= -15dB, SPPOSPCON EV6= -15dB, ERPOEARO EV7= -20dB, TEXTADDAUDO, EV0=0dB SW0=SW1=SW2=SW3=OFF, SW12=ON 0dBm0 input, TEXTADDTAUDO SW0=SW1=SW2=SW3=OFF, SW12=ON 0dBm0 input, MIC20TAUDO SW0=SW1=SW2=SW3=OFF, SW12=ON 0dBm0 input, MIC10TAUDO SW0=SW1=SW2=SW3=OFF, SW12=ON HTONE 1KHz, EV3=0dB DTMF / TONETAUDO
Min. volume level
GEV3L GEV4L GEV5L GEV6L GEV7L GVSW0 GVSW1 GVSW2
dB
GVSW3
Output muting level
GVSW4
-
-
-60
dBV
SW4=SW5=SW6=SW7=OFF HTONE 1KHz, EV4=0dB DTMF / TONEAUDO SW4=SW5=SW6=SW7=OFF 0dBm0 input, EV0=EV7=0dB TEXTADDAUDO SW4=SW5=SW6=SW7=OFF 0dBm0 input, EV1=0dB, PCMINAUDO SW4=SW5=SW6=SW7=OFF 0dBm0 input, RINAUDO SW1=SW2=SW3=OFF, SW0=SW12=ON 0dBm0 input, TEXTADDTAUDO
GVSW5 GVSW6 GVSW7 GVSW12
- - - -
- - - -
-60 -60 -60 -60
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BU8732AKV
Communication ICs
< Tone block >
Parameter Symbol Min. -16 VTNH -16 -16 - Typ. -14 -14 -14 - Max. -12 -12 -12 -25 Unit Conditions HTONE 2kHz, DTMF / TONEAUDO EV4=0dB dBV HTONE 2kHz, DTMF / TONETAUDO EV3=0dB LTONE 384Hz, DTMF / TONEAUDO EV4=0dB dB HTONE 1kHz, DTMF / TONEAUDO EV4=0dB
Tone output level
VTNL
Tone distortion
SDTN
< Reference block >
Parameter Symbol VOTX Min. - - - -10 -10 -10 Typ. 1.5 1.5 1.4 - - - Max. - - - 10 10 10 A V Unit Conditions TXREF, All power on RXREF, All power on CODECREF, All power on TXREF, All power on, VOTX 50mV RXREF, All power on, VORX 50mV CODECREF, All power on, VOCODEC 50mV
Output reference signal Voltage
VORX VOCODEC IOTX
input/output current
IORX IOCODEC
< Ringer driver block >
Parameter Symbol IORG1 Min. Typ. Max. Unit Conditions RINGER1=ON, Vsat<0.3 mA RINGER2=ON, Vsat<0.4 RINGER3=ON, Vsat<0.7 RINGER1=OFF, VO=3V A RINGER2=OFF, VO=3V RINGER3=OFF, VO=3V
30 50 150 - - -
- - - - - -
- - - 5 5 5
Max. output drive current
IORG2 IORG3 IL1
Leakage current
IL2 IL3
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BU8732AKV
Communication ICs
Digital AC characteristics (Ta=25C, DVDD=RXVD =TXVDD=3.0V, FSYNC=8kHz, DCLK=256 kHz, unless specified particularly Gain= 0db) < Serial interface timing >
Parameter Symbol fCLK fSYNC TIR TIF TRS TRH TSR Min. Typ. Max. Unit kHz kHz ns ns ns ns / A-LAW Linear FSYNC frequency Signal rise time Signal fall time DCLK -PCMIN DCLK -PCMIN DCLK -FSYNC ns DCLK -PCMOUT DCLK -PCMOUT Conditions
Data clock frequency (DCLK) Frame Sync Frequency (FSYNC) Input transition time 0 1 Input transition time 1 0 PCMIN Set up time
64 128 7.996 - - 100 100 100 100 100
- - 8.000 - - - - - - -
2048 2048 8.004 20 20 - - - - -
PCMIN Hold time
Other timings
TSS TSH
< Write timing for the internal registers >
Parameter
Symbol fSCL tSU : DATA tHD : DATA tsud thtd tpwd
Min.
- 100 100 333 1000 667
Typ.
- - - - - -
Max.
3 - - - - -
Unit MHz ns ns ns ns ns
Conditions SCL clock frequency SDA -SCL SDA -SCL SCL -STB SCL -STB STB -STB
SCL frequency SDA input set up time SDA input hold time Input hold time Input setup time
STB input hold time
External dimensions (Unit : mm)
9.00.3 7.00.2 36 25 24 13 1 12 0.1250.1 0.5 0.20.1 0.10
9.00.3
7.00.2
37 48
1.4250.1 0.10
VQFP48
0.5
10/10
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1

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