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TC9260
ELECTRONIC VOLUME
TOSHIBA TC9260P/F
TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC
TC9260P, TC9260F
ELECTRONIC VOLUME
The TC9260P and TC9260F are an optimum CMOS which TC9260P
has been designed for electronization of volume control
of audio equipment, etc.
FEATURES
0 Attenuation can be controlled from OdB to -78dB by
2dB/step.
DlP16-P-300-2.54A
o This ICs feature a built-in loudness circuit. (20dB tap) TC9260F
o The volume, balance and loudness circuits can be
controlled by serial data.
. Chip select input allows control of up to 2 of these chip
on the same bus.
o Polysilicon resistors enables Iow-distortion, high-
performance volume system.
SOP16-P-300-1 .27
0 Package is DIP16 and SOP16. Weight
DlP16-P-300-2.54A : 1.0g (Typ.)
PIN CONNECTION BLOCK DIAGRAM SOP16-P-300-1.27 : 0.16g (Typ.)
Vss VDD
OUT OUT
Vss 1 IN IN
OUT 2 L-ch R-ch
IN 3 LDI LDI
VOLUME VOLUME
L02 5 LD2 LD2
A-GND 6
CS 7 A GND 11 A GND
CK 8 - -
cs DATA DECODER, STB GENERATOR 1 STB
CK SHIFT REGISTER (13bit) 9 DATA
980508EBA2
O TOSHIBA is continually working to improve the quality and the 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 observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product 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 products specifications Also, please keep in mind the precautions and conditions set forth in the
TOSHIBA Semiconductor Reliability Handbook.
1998-05-15 1/10
TOSHIBA TC9260P/F
PIN FUNCTION
2f. SYMBOL PIN NAME FUNCTION AND OPERATION NOTE
1 I/ss Digital ground pin
16 VDD Power supply pin
2 L-OUT
Volume output pin
15 R-OUT
3 L-IN V I . t .
14 R-IN o ume Inpu pm
4 L-LD1 Tap output pins for
13 R-LD1 loudness (1)
5 L-LD2 Tap output pins for
12 R-LD2 loudness (2)
6 L-GND
11 R-GND
Analog ground pins
It Volume circuit
LD1 o-o" i,ir,ii,
A-GND O—
o Loudness ON : LS1=ON, LS2=OFF
7 CS Chip select input pin
It Input pin for designating chip select code.
This pin correspond to bit "C1" which is chip
select bit in serial data.
When CS="1" and C1="1”, Data is valid.
When CS="0" and C1="0", Data is valid.
8 CK Clock input pin
Clock input for data transfer.
9 DATA Data input pin
Attenuation channel selection data input
terminal.
Data consists of 13 bits and input by CK signal.
10 STB Strobe input pin
Attenuation setting signal take from DATA and
CK terminals are latched when this terminal is
placed at "H" level.
threshold
value input
980508EBA2'
O The products described in this document are subject to foreign exchange and foreign trade laws.
0 The information contained herein is presented only as a guide for the ap lications of our products. No responsibility is assumed by TOSHIBA
CORPORATION for any infringements of intellectual property or other rights D the third parties which may result from its use. No license is granted
, implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others.
0 T e information contained herein is subject to change without notice.
1998-05-15 2/10
TOSHIBA TC9260P/F
OPERATION
1. Volume circuit
Volume circuit consist of ladder resistor and analog switch.
Tap for loudness is connected to step 10 (20dB). Loudness operation is controlled by LS1/LS2
switches.
0 Equipment circuit It Volume step and attenuation
oo— STEP tfy/Ill-, STEP f)JItlt
IN r so SO 0 (dB) S21 42
S1 S1 2 S22 44
S2 4 S23 46
l I ' S3 6 S24 48
285k9 " E E E S4 8 S25 50
ss 10 S26 52
LSI S9 S6 12 S27 54
E2 . S7 14 S28 56
LDI 33m r mo S8 16 S29 58
$11 S9 18 S30 60
LD2 .512 S10 20 S31 62
S11 22 S32 64
20.25kQ) S12 24 S33 66
s13 26 s34 68
S14 28 S35 70
rS39 SIS 30 S36 72
A-GND S40 S16 32 S37 74
S17 34 S38 76
S18 36 s39 78
s19 38 S40 co
S20 40
0 Loudness ON : LS1=ON, LS2=OFF
o Loudness OFF : LS1=OFF, LS2=ON
1998-05-15 3/10
TOSHIBA TC9260P/F
2. Setting volume values
Optional attenuation data is input through the DATA, CK and STB terminals.
Data consists of 18 bits as follows.
(1)Serial data format
DATA /iF1)(rr2)(rr3)(oT0(rrs)(rr6)(G)(ci2)(ci1
(2) Chip select code (C1~C4)
Chip select code is set to use serial bus line in common with other ICs.
Data C2, C3, C4 is fixed 0, I, 1 in TC9260P, TC9260F.
When level of CS input pin (7pin) correspond to C1 bit, data is valid.
CS C1 C2 C3 C4
"1 " 1 0 1 1
"0" 0 O 1 1
(3) L is left-channel select data ; R is right-channel select data. (L/R)
When L= 1, left-channel volume is set ; when R=1, right-channel volume is set.
(When R=L= l, both channel volume are set simultaneously).
(4) LD is loudness setting data
When LD-- "0", loudness is OFF (LS1=OFF, LS2 =ON)
When LD="1", loudness is ON (LS1=ON, LS2=OFF)
1998-05-15 4/10
TOSHIBA TC9260P/F
(5)Volume setting data (DI--D6)
List of volume data and step
I/el-ll')? D1 D2 D3 D4 D5 D6 I/fu/l/IE D1 D2 D3 D4 D5 D6
OdB 0 o o o o o 40dB o o 1 o 1 o
2 1 o o o o o 42 1 o 1 o 1 o
4 o 1 o o o o 44 o 1 1 o 1 o
6 1 1 o 0 o o 46 1 1 1 o 1 o
8 o o 1 o o o 48 o o 0 1 1 o
10 1 o 1 o o o 50 1 0 o 1 1 0
12 o 1 1 o o o 52 o 1 o 1 1 o
14 1 1 1 o o o 54 1 1 o 1 1 o
16 o o o 1 o o 56 o 0 1 1 1 0
18 1 o o 1 o o 58 1 o 1 1 1 o
20 o 1 o 1 o o 60 o 1 1 1 1 o
22 1 1 o 1 o o 62 1 1 1 1 1 o
24 o o 1 1 o o 64 o o o o o 1
26 1 o 1 1 o o 66 1 o 0 o o 1
28 o 1 1 1 o o 68 o 1 0 o o 1
30 1 1 1 1 o o 70 1 1 o o o 1
32 o o o 0 1 o 72 o o 1 o o 1
34 1 o o o 1 o 74 1 o 1 o o 1
36 o 1 o o 1 o 76 o 1 1 o o 1
38 1 1 o o 1 o 78 1 1 1 o o 1
oo o o o 1 o 1
(Note) Note that if data other than those listed above are input, volume values are
undefined.
(6) Serial data timing
Input CK, DATA and STB according to the following timing.
a>1ps, b>2ps, c>2ps
1998-05-15 5/10
TOSHIBA TC9260P/F
MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VDD -0.3--15 V
Input Voltage VIN -0.3--VDD+0.3 V
Power Dissipation PD 300 mW
Operating Temperature Topr -40--85 "C
Storage Temperature Tstg - 55-150 "C
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Ta =25°C, VDD=9V)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Operating Supply - 0
Voltage VDD - Ta= 40 85 C 4.5 9.0 12 V
Operating Supply
Current IDD 1 No load - 0.3 1.0 mA
"H" Level VIH (1) CK, DATA, STB input pin 4.0 -- VDD
"H" Level l/IH (2) . . VDDXOJ ~ VDD
I V I - V
nput otage "L" Level VIL(2) CS input pm 0 -- VDDX0-3
"H" Level IIH . . VIH =VDD -1 - 1
- All In ut In
Input Current "L" Level IIL p p lhL=0V -1 - 1 pA
Volume Resistance RVR - Loudness "OFF" 20 28 37 kn
Analog Switch ON
Resistance RON - - - 250 600 f)
Attenuation Error AATT - - 0 -+2 dB
Volume Balance Volume error between left
AR - - i 0
Between Left And Right VR and right 0 3 A
Total Harmonic
THD = OdB - . - o
Distortion 1 UN 3:72 0 01 A
Maximum Attenuation ATTM 1 1"1=, l'? 00dB - 100 - dB
Cross Talk CT 1 RL_¢15330 odB - 100 - dB
Output Noise Voltage VN 1 g- - 2.0 - PA/rms
Operation Frequency fop - CK, DATA, STB - - 500 kHz
. . . TCK CK input - 0.5 1.0
Minimum Pulse Width TSTB - STB input - 1.0 2.0 [as
1998-05-15 6/10
TOSHIBA
TEST CIRCUIT 1
TC9260P/F
V . + t
g-C D- I L:
'x?., IF'
6000 600.0
V.M pf, tft s C E3) s G pfu.M
" -e 12 RL
+ . G,', fi:) t
(1 /2 VDD) IVDD 7 . STB (1 /2 VDD)
J -e D- DATA
APPLICATION CIRCUIT
Mr- 1 /2 VDD
\ I l I
J76 Vss VDD 16
OUTPUT a + (j..2 tis) + a - OUTPUT
L-ch R-ch
INPUT 'p.- [ Ca..? Ci?, -a+ INPUT
R1é2l1
A LD1 LD1 13
5 LD2 LD2 Cj)
1 /2 VDD
c2 1/2 VDD
+—I—@ D--4
+5 I 7 cs STB
r--,(ii] CK DATA
- TO CPU
J: :77
(Note) It L-ch circuit is loudness operation, R-ch circuit is without loudness.
RI--8.2kf1, C1=1500pF, C2 =0.1pF
For preventing noise when loudness is turned on or off. R=220kn--470kn
High-frequency digital signals are input to pins CK, DATA and STB. Since these
signals may cause noise in analog circuits, either use shield wire for CK, DATA,
and STB signal lines, or design the pattern so that these signal lines are protected
by the ground line.
1998-05-15 7/10
TOSHIBA
THD - Vout
fin=1kHz, Rg=6000,
RL=100kQ, HPF=20Hz
LPF = 80kHz
0.01 0.1 l 10
Vout (Vrms)
TC9260P/F
LD Characteristics
10000 1 00000
1998-05-15 8/10
TOSHIBA TC9260P/F
OUTLINE DRAWING
DlP16-P-300-2.54A Unit : mm
Cl r'-n m F-n fl '-l r-n r-1 d
y ' |_I L..U L_l l-l L_I V
V 19.75MAX "
19.25i0.2 V.
C.9§i0.1
“L 'R-r:
{r m' "li'
I -f..'?., v
ze' I cr?
ll d m
0.735TYP l‘1.410.1 “40.5101 0.25
Weight : 1.0g (Typ.)
1998-05-15 9/10
TOSHIBA TC9260P/F
OUTLINE DRAWING
SOP16-P-300-1.27 Unit : mm
'ilaFiflliHrlc"
N t'0. 7;
_ilirl,ri,leilj--v-
0.705TYP " ' 0.43:0.1 Ms 1
_ I‘ ' “I A
v, 10,8MAX t
L 10.3102 "
, .1 rl
' 1 .9MAX
E!!! if
c; - 0.8:t0.2
Weight : 0.169 (Typ.)
1998-05-15 10/10
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