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TA7654P
AUDIO LINEAR IC
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TOSHIBA,
ELECTRONIC DE
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DEDWU'172LI'? DDL7LI7E ll T
02E 17472
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5 LED'S DRIVER
. Logarithmic Level Indicator (-10, -5, 0, +3, +6dB)
. LED Drive Current Up to 30mA
. Driving Capability, Green and Red LED
. Two Inputs and Output Amplifier with Selectivity Gain 1
. Superiority Operation for Larger Input Voltage. 3
. Linear Level-Deteetor_and Logarithmic Comparator. g
. Open Collector Output, Low Power Dissipation and
Hide Supply Voltage Range t VCC=4-13V
. Low Quiescent Current: IccQ=1.7mA(Typ.)
. Stable Reference Voltage for Supply Voltage:
Vref=l.25vt0.lV at Vcc=4 --13g
MAXIMUM RATI NGS (Ta=25°C)
Unit in mm
at VCC=9V
2.5 MIN
199MAX 2 1621025
. /,', '
ONlE‘I
(15:0.15 2.54:025
. . +01
1.410.15 0.25-0.05
Lead pitch is 254 and tolerance is
1025 against theoretical center of
each lead that is obtained on the
basis of No.1 and No.14 leads.
CHARACTERISTIC SYMBOL RATING UNIT JEDEC -
Supply Voltage VCC 14 ll TOSHIBA GD16A-P
Output Current lo 30 mA
Power Dissipation (Note) PD 625 MI
Operating Temperature Topr ...30-75 oc
Storage Temperature Tstg -55--150 oc
Note: Derated above Ta=25°C in the proportion of sw/oc.
ELECTRICAL CHARACTERISTICS tvcc=9v,r--1kuz,Ta--efc)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Quiescent Current ICCQ - INPUT=0 - 1.7 2.2 mA
Output Current lo - VCB=1V 15 25 30 mA
::::::£::“:::::;e llcEtsat) - Io=20aut - 0.5 - V
Output Leak Current 10(0FF) - INPUT=0 - ...' 50 ph
Output Offset Voltage VOFF - Gv=15dB - 20 100 mV
Reference Voltage Vref - - 1.15 1.25 1.35 V
LD5 - ciN(+)--1.25v,cIN(-)=0 5 6 7 dB
LDir - CIN(+)=0.88V,CIN(-)=0 2.5 3.5 dB
Comparator Level LD3 - crtu+)=0.625v,c1Nt-r=0 -0.5 0.5 dB
LD2 - crNt+r--0.351r,crNt-y--0 -5.5 -5 '-4.5 dB
LD1 - Clu(+)=0.2V, CIN(-)--0 -11 -10 -9 dB
emnmum
AUDIO LINEAR K2:rerra
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') (1)1NPUT AMP. @)REGULATOR M)DRIVER
ABSTRACT OF THIS IC
This IC consists of (1) Input Amplifier, (2) Regulator, (3) Comparator and
(4) Driver.
(1) Input Amplifier
It consists of the differential amplifier and the emitter follower.
The function ls the amplifier, the peak detector and the peak hold.
There are two input amplifiers with parallel and the amplifier with larger
input voltage operates.
(2) Regulator
It is stable to the ambient temperature drift and supply voltage variation.
The reference voltage is 1.25V. It ls used for the reference of the
comparator.
(3) Comparator
It consists of the five comparators and ladder resister. It drives the
transistor that drives the LED in correspond to the output voltage of the
amplifier.
' (4) Driver
Each driver is the open collector and sinks current of 30mA.
-... -".'.r.=- m-..” t..."
=rd,'Ta'r"2'g'lh' 4-5-4.“ -NMlt..sq...
mTOSHIBA Al'lr-
L.“ ,;--v --¥n-_.. - -= V .4.._-_...._- L - .7. _ .7 . _ _ - _ - - " _ --------'------, u. - ..._.
www.ic-phoenix.com
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