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TC9459F-TC9459N
ELECTRONIC VOLUME CONTROL
TOSHIBA
TC9459N/F
TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC
TC9459N, TC9459F
ELECTRONIC VOLUME CONTROL
The TC9459N, TC9459F are electronic volume control ICs
developed for use in home stereos and other audio
equipment.
Using serial data input from external sources, it controls
the sound volume, balance and loudness circuits.
FEATURES
0 Sound volume can be controlled in 91 steps from 0 to
-89dB or up to an infinite level in 1dB increments.
o Incorporating two channels of volume control circuits, the
device allows independent volume control : therefore, it
also provides the balancing function.
0 A loudness circuit (20dB tap) is built in.
It Can operate with a single or dual power supplies.
0 Can control up to 4 chips on the same bus by using chip
select input.
0 Thanks to its polysilicon resistor, the device allows you to
configure a Iow-distortion, high-performance volume
control system.
TC9459 N
SDlP28-P-400-1.78
TC9459F
SOP24-P-450-1.27A
Weight
SDlP28-P-400-1.78 : 2.2g (Typ.)
SOP24-P-450-1.27A : 0.44g (Typ.)
2001 -06-1 9
TOSHIBA
TC9459N/F
PIN CONNECTIONS
TC9459N
vss 1 VDD vss 1
NC 2 NC L-OUT 2
L-OUT 3 R-OUT NC 3
NC 4 NC L-IN 4
L-ch L-IN 5 RAN R-ch L-ch L-LDI 5
L-LD1 6 R-LD1 L-LD2 6
L-LD2 7 R-LO2 L-A-GND 7
L-A-GN D 8 R-A-GN D NC 8
NC NC CS1
CS1 CS2 NC
NC NC GND
NC NC CK
GND STB
CK I 14 DATA
BLOCK DIAGRAM (TC9459N)
Vss VDD
Same as L-ch
L-LD1 Circuit
L-A-GND
L-ch 7 to 91 R-ch 7 to 91
decoder decoder
L-ch data R-ch data
latch circuit latch circuit
NC Shift register (24BIT)
NC Level shift circuit
TC9459F
R-LD1 Rich
R-A-GND
R-A-G N D
2001 -06-1 9
TOSHIBA
TC9459N/F
BLOCK DIAGRAM (TC9459F)
L-A-G N D
91STEP
L-ch 7 to 91
decoder
L-ch data
latch circuit
Same as L-ch
Circuit
R-ch 7 to 91
decoder
R-ch data
latch circuit
Shift register (24BIT)
Level shift circuit
R-A-G N D
2001 -06-1 9
TOSHIBA TC9459N/F
PIN DESCRIPTION
Numeral in ( ) means the pin No. of TC9459F.
PIN No. SYMBOL PIN NAME FUNCTION REMARK
1 (1) VSS Negative power When using 1/DD=6.0--17V
supply pin duallpower E GND=0V
. . supp let;
28 (24) VDD Posntlve Power VSS= -6.0-- - 17V -
supply pm When using a
13 (11) GND Di ital GND in single power VDD--6.0--18V
g p supply GND =VSS =0V
3 (2) L-OUT Volume output . Volume circuit
26 (23) R-OUT pin OUT
5 (4) L-IN IN _ VR
Volume input pin 7.4m LA1 2:531:32
24 (21) R-IN LD1 n
6 (5) L-LD1 LD2 'yn -
23 (20) R-LDI Loudness tap A-GND
7 (6) L-LD2 output pin
22 (19) R-LD2 LA1 LA2
8 (7) L-A-GND LOUDNESS "ON" ON OFF
Analog GND pin LOUDNESS "OFF" OFF ON
21 (18) R-A-GND
10 (9) CS1 Chip select input Up to 4 chips 9n t.he same Ps can
in be used by switching over chip select -
19 (16) CS2 p code.
14 (12) CK Clock input pin Data transfer clock input Low
15 (13) DATA Data input pin Volume setup serial data input thCiittd
16 (14) STB Strobe input pin Data write strobe input input pin
27 (22)
9 (8) .
20 (17) NC No connection - -
12 (10)
17 (15)
2001 -06-1 9
TOSHIBA TC9459N/F
DEVICE OPERATION
1. Setting up volume value (amount of attenuation)
Serial data consisting of 24bits is used to set a volume value.
It Data format
(LSB) " (MSB)
DATA ID01lo02lry0alr)0slo0slD07l 'l I o I o I o I CI I Ci? I c3 I C4 I
STB ff n
LSB 1 2 3 4 5 6 7 8
I D01 I D02 I D03 I D04 I D05 I D06 I D07 I "0" I .' Left channel volume data
9 1O 11 12 13 14 15 16
I D11 I D12 I D13 I D14 I D15 I D16 I D17 I "0" I : Right channel volume
“.mm : Loudness data
21 22 23 24 MSB
: Chip select data
(1) Chip select data
The bits "C1" through "C4" are the chip select code data.
These bits set the code data that corresponds to the CS1 and CS2 inputs.
CSICS2 C1 C2 C3 C4
(2) Loudness setting
The bit "LD" is the loudness setup data. Loudness is turned on when LD=1.
5 2001-06-19
TC9459N/F
TOSHIBA
(3) Volume setup data
The bits "D01" through "D07" are the left channel volume setup data, the bits "D11" through
"D17" are the right channel volume setup data. For details, see the tables below.
D01 D02 D03 D04 D05 D06 D07
D11 D12 D13 D14 D15 D16 D17
VOLUME
D01 D02 D03 D04 D05 D06 D07
D11 D12 D13 D14 D15 D16 D17
VOLUME
2001 -06-1 9
TOSHIBA
2. Serial data timing
TC9459N/F
Make sure that CK, DATA and STB are input to the device at the timings shown below.
DATA X X X :‘E X l A:
CK i," i..' "
i s i E s "
STB i' i,' i' i.' i' n
' i i .. : "
i a g a 5 5 E a a a
-.- E E
i.' b i' a>0.5,us, b>1.0,us
3. Operating with a single or dual power supplies
The TC9459N, TC9459F can operate with either a
0 Operation with single power supply
(1/2 VDD)
GND/Vss
Analog signal Logic signal
single power supply or dual power supplies.
0 Operation with dual power supplies
GND/A-GND
Analog signal Logic signal
2001 -06-1 9
TOSHIBA TC9459N/F
MAXIMUM RATINGS (Ta=25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage (1) VDD'VSS -0.3--36 V
Supply Voltage (2) VDD-GND -0.3-20 V
GND Block Input Voltage VIN(1) -0.3-VDD+0.3 V
vss Block Input Voltage VIN(Z) VSS-0.r-VDD+0.3 v
Power Dissipation PD 300 mW
Operating Temperature Topr -40--85 "C
Storage Temperature Tstg -6r-150 °C
ELECTRICAL CHARACTERISTICS
(Referenced to VDD=15V, vss-- -15V, GND=0V at Ta =25°C unless otherwise noted)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Operating Supply Voltage VDD'VSS - Operating t.ith dual 12 ~ 34 V
(1) power supplies
Operating Supply Voltage VDD-GND - Operating with single 6.0 FN.. 18 V
(2) power supply
Operating Supply Current IDD 1 Non-loaded, no input - 0.5 2.0 mA
Input "H" Level 1/IH(1) CK, DATA, STB pins 4.0 -- VDD V
Voltage "L" Level V|L(1) - VDD=6.0~18V GND ._ 1.0
Input "H" Level VIH (2) . VDDXO.7 -- VDD
Voltage "L" Level 1/IL(2) - CS1 and CS2 pms GND -- VDon.3 V
Input "H" Level IIH CK, DATA, STB, V|H=15V -1.0 _ 1.0 A
Current "L" Level Ill. - CS1, CS2 pins 1/IL=01/ -1.0 ~ 1.0 ’u
Operating Frequency fop 0 ' 1.0 MHz
Min. Operating Clock - CK, DATA, STB pins
Width Tck 0.5 - - ps
Volume Resistance RVR - When loudness OFF 20.5 29.3 38.2 k0
Step Deviation AVR - Deviation between - 1.2 -- 1.2 dB
volume steps
Analog Switch ON- RON(1) 21et:i,tyct2e,Ct, - 350 - fl
. - og WI c xc p
Res stan e -
I C RON (2) for LA2 750 1500
Analog Switch Leakage .
Current 'OFF - Internal analog switch -0.1 0.1 PA
Total Harmonic Distortion THD hN=1kHz - 0.005 - %
Maximum Attenuation ATTMAX VIN =1Vrms - 100 - dB
Output Noise Voltage VN 1 Rg=6000, RL=100kQ - 1.0 - [1Vrms
Crosstalk CT BW = 20Hz-20KHz - 100 - dB
8 2001-06-19
TOSHIBA TC9459N/F
TEST CIRCUIT 1 (IDD/THD/ATTMAX/VN/CT)
VDD samel as for L- ch j STB DATA CK
"ir,",-:-.)--,-, _,-rrs,/2Icsi,/2csiic--, gt
J, : TC9459N
3'299@9@099999999
V.M RL 56
EXAMPLE OF APPLICATION CIRCUIT (TC9459N)
Vss=-15V VDD=+15V
E , 47/1F 47pF E ,
-ra+ -n+
-h' 'F-
0.1/1F I” 0.1/1F
4.7,uF
L-ch out 26 + - R-ch out
4 7/1F E
'- g-fi) Da, 9
L-ch in 5 R-ch in
0.1M 1500pF +3"
(00] 1x4) (05)
01,UF 150
(8: ha)
(w: f0)
DATA STB
(Note) Since a high-frequency digital signal is input to the CK, DATA and STB pins, corrective
measures must be taken to prevent it from getting mixed in the analog circuit to
generate noise by, for example, guarding the above signal lines with ground patterns
or using shielding wire for these lines.
2001 -06-1 9
TOSHIBA TC9459N/F
PACKAGE DIMENSIONS
SDIP28-P-400-1.78 Unit : mm
28 15 "i
J""''1r-1rOC''lf-ll-1l-1r-1f-1i-lr-nFTr-1I-'l O
3) 3 g
l-It-JI-lL-llc-JL-lL-dt-ICJ/lr-lr-IL:
26.1MAX
25.6K0.2
“a r'?-
-a- m.
1 .243TYP 04610.1
Weight : 2.29 (Typ.)
10 2001-06-19
TOSHIBA
PACKAGE DIMENSIONS
SOP24-P-450-1.27A
'i4cr:uuuuuu/i1--------r
3) st',i.ii,s'',.i
jasflmm nnz
1.015TYP L-tl-ttl-l-mE-ggi;
Weight : 0.44g (Typ.)
TC9459N/F
Unit : mm
(450mil)
2001 -06-1 9
TOSHIBA TC9459N/F
RESTRICTIONS ON PRODUCT USE
000707EBA
OTOSHIBA is continually working to improve the quality and reliability of its products.
Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent
electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer,
when utilizing TOSHIBA products, to comply with the standards of safety in making a safe
design for the entire system, and to avoid situations in which a malfunction or failure of such
TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified
operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please
keep in mind the precautions and conditions set forth in the "Handling Guide for
Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc..
OThe TOSHIBA products listed in this document are intended for usage in general electronics
applications (computer, personal equipment, office equipment, measuring equipment, industrial
robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor
warranted for usage in equipment that requires extraordinarily high quality and/or reliability or
a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended
Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship
instruments, transportation instruments, traffic signal instruments, combustion control
instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA
products listed in this document shall be made at the customer's own risk.
0 The products described in this document are subject to the foreign exchange and foreign trade
OThe information contained herein is presented only as a guide for the applications of our
products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of
intellectual property or other rights of the third parties which may result from its use. No
license is granted by implication or otherwise under any intellectual property or other rights of
TOSHIBA CORPORATION or others.
0 The information contained herein is subject to change without notice.
12 2001-06-19
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