NJU8790 Datasheet, PDF (1/15 Pages) New Japan Radio – Pushbutton Interface EVR with Class D Stereo Power Amplifier

NJU8790
Pushbutton Interface EVR with Class D Stereo Power Amplifier
„ GENERAL DESCRIPTION
The NJU8790 is a pushbutton interface electronic volume
with class D stereo power amplifier. It includes input selector,
electronic volume, and limiter.
The NJU8790 can control the volume and the mode select
without the micro-controller by the pushbutton interface.
The NJU8790 is suitable for low power consumption and
simple control application such as mobile audio player, active
speaker and cradle speaker.
„ PACKAGE OUTLINE
NJU8790V
„ FEATURES
OOperating Voltage
+2.7 to +5.5V
OLow operating current
10mA typ. (Active mode)
OOutput power
1µA max. (Stand-by mode)
2.7W+2.7W (V⁺= 5V, 4ohm, BTL)
OOutput filter-less
OPop-noise reduction circuit
OShort-circuit protection circuit
OSupply voltage monitoring circuit
O2-Input 1-Output selector (Single-end / Differential)
OPushbutton interface EVR 0 to -68dB, MUTE
OActive filter, limiter
OCMOS Technology
OPackage Outline
SSOP44 (11 x 7.6 x 1.15mm, 0.5mm pitch)
„ BLOCK DIAGRAM
V⁺
Pow
Power
Button
V⁺
V⁺
V⁺
V⁺
Mid
Max
Power
indicator
Volume
indicator
Active filter
V⁺
V⁺
TEST SWMODE PWSW SELOUTL VOLINL
NJU8790
IN1L
IN1G
IN1R
Input
IN2L
Selector
IN2R
PWIND VOLIND2 VOLIND1 OUTL
Electric
Volume
TEST1
SELSW SELOUTR VOLINR VOLADJ ATTADJ ATT UP DOWN OUTR
EQ1L
EQ2L IREF VDD VREF GND
UVLO
VDDL VDDR
Limiter
2.7W(4ohm)
1.5W(8ohm)
Stereo
Class‐D Amp
OUTLP
OUTLN
OUTRP
EQ1R
EQ2R
+12dB typ.
OUTRN
INT
SENSE
VSS Short
Protection
VSSL VSSR
V⁺
V⁺
Input1/Input2
Initial Vol adjuster
‐12, ‐16, ‐20, ‐24 dB
Att
Up Dn
V⁺
V⁺
Att. Level adjuster
‐10, ‐15, ‐20, Mute
Active filter
NJU8790 Ver.6.1 E
-1-