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NJM2792
www.DataSheet4U.com
Quad Boost Amplifier
s GENERAL DESCRIPTION The NJM2792 is a quad boost amplifier designed for car audio system. It expands the frequency characteristics by high slew rate. It can swing 14V peak-to-peak output voltage at 9V. It consists of four channel non-inverting amplifier with the gain of 8dB. It is suitable for car audio system and other boost amplifier system. s PACKAGE OUTLINE
NJM2792V
s FEATURES q Operating Voltage q Operating Current q Boost output Function q Maximum Output Voltage q Supply Voltage Rejection Ratio q Total Harmonic Distortion q Noise Output Voltage q Bipolar Technology q Package Outline
(6 to 11V) (12mA typ. ) + (VO=14Vpp:@V =9V) (4.5Vrms typ., @ f=100kHz ) (50dB typ. ) (0.003% typ. ) (5µVrms typ. ) SSOP20
s BLOCK DIAGRAM
LIFT AMP
CLS
SIGNAL AMP LF-IN SIGNAL AMP LR-IN LR-OUT LF-OUT
RF-IN
SIGNAL AMP
RF-OUT
RR-IN
SIGNAL AMP
RR-OUT
LIFT AMP
CLS
–1–
NJM2792
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sPIN CONFIGURATION
1 2 3 4 5 6 7 8 9 10
L-GND L-CONT FL-OUT FL-FB FL-IN REF FR-IN FR-FB FR-OUT R-COUT
L-CIN RL-OUT RL-FB RL-IN V+ RR-IN RR-FB RR-OUT R-CIN R-GND
20 19 18 17 16 15 14 13 12 11
No.
1 2 3 4 5 6 7 8 9 10
Symbol
L-GND L-COUT FL-OUT FL-FB FL-IN REF FR-IN FR-FB FR-OUT R-COUT
Function
Ground for Left Channel Capacitor for - Level Shift Left Channel Output for Front Left Channel - Input for Front Left Channel + Input for Front Left Channel Reference Voltage + Input for Front Right Channel - Input for Front Right Channel Output for Front Right Channel Capacitor for - Level Shift Right Channel
No
11 12 13 14 15 16 17 18 19 20
Symbol
R-GND R-CIN RR-OUT RR-FB RR-IN V+ RL-IN RL-FB RL-OUT L-CIN
Function
Ground for Right Channel Capacitor for + Level Shift Right Channel Output for Rear Right Channel - Input for Rear Right Channel + Input for Rear Right Channel Power Supply + Input for Rear Left Channel - Input for Rear Left Channel Output for Rear Left Channel Capacitor for + Level Shift Left Channel
–2–
NJM2792
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s ABSOLUTE MAXIMUM RANGES PARAMETER Supply Voltage Power Dissipation Operating Temperature Storage Temperature V
+
(Ta=25°C) RANGE +15
550
NOTE: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
SYMBOL PD Topr Tstg
+
UNIT V mW °C °C
-40 to +85 -40 to +125
s ELECTRICAL CHARACTERRISTIC (V =9V,Ta=25°C) PARAMETER DC CHARACTERRISTIC Operating Voltage Operating Current Output Voltage Voltage Gain Channel Separation 1 Channel Separation 2 Channel Balance Roll-off Low Frequency Roll-off High Frequency Input Resistance Output Resistance Maximum Output Voltage 1 Maximum Output Voltage 2 Noise Output Voltage Total Harmonic Distortion Supply Voltage Rejection Ratio
V
+
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
6.0 No Signal 7.5 RS=600Ω , VO=1Vrms, f = 1kHz,
Front channel vs. Rear channel L channel vs. R channel
9.0 12.0 7.8 8.0 80 100 5 60 2 5.2 4.5 5 0.003 0.01 50
11.0 18.0 8.5 0.5 76 10 0.01 -
V mA V dB dB dB dB Hz kHz kΩ Ω Vrms Vrms µVrms % % dB dB
ICC VODC
AC CHARACTERRISTIC (f=1kHz , Vo=1Vrms, RL=10kΩ)
Av CS1 CS2 BAL fRL fRH RIN ROUT VOM1 VOM2 VNO THD1 THD2 SVR1 SVR2
70 -
RS=600Ω , VO=1Vrms, f = 1kHz,
-1dB -1dB
100 44 -
THD=0.1%, f = 1kHz THD=1%, f = 100kHz Rs=0Ω , A-Weighting f=1kHz , VO=3Vrms, A-Weighting f=17Hz to 20kHz , VO=3Vrms, A-Weighting Rs=0Ω, f=1kHz , VRP=100mVrms Rs=0Ω, f=20Hz to 20kHz , VRP=100mVrms
5.0 55 -
–3–
NJM2792
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! TERMINAL DESCRIPTION
PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT TERMINAL DC VOLTAGE
2 10
L-COUT R-COUT
Capacitor for - Level Shift Left Channel Capacitor for - Level Shift Right Channel
12kΩ
2PIN, 10PIN
(V+-1.4)x0.09 [V]
12 20 3 9 13 19
R-CIN L-CIN FL-OUT FR-OUT RR-OUT RL-OUT
Capacitor for + Level Shift Right Channel Capacitor for + Level Shift Left Channel Output for Front Left Channel Output for Front Right Channel Output for Rear Right Channel Output for Rear Left Channel
12PIN, 20PIN 3PIN, 9PIN, 13PIN, 19PIN 8.5kΩ 8.5kΩ
V -0.7 [V]
(12,20PIN)
+
V -1.4 [V]
(3,9,13,19PIN)
+
4 8 14 18 5 7 15 17
FL-FB FR-FB RR-FB RL-FB FL-IN FR-IN RR-IN RL-IN
- Input for Front Left Channel - Input for Front Right Channel - Input for Rear Right Channel - Input for Rear Left Channel + Input for Front Left Channel + Input for Front Right Channel + Input for Rear Right Channel + Input for Rear Left Channel
5PIN, 7PIN, 15PIN, 17PIN
300Ω
300Ω
2kΩ
2kΩ
4PIN, 8PIN, 14PIN, 18PIN
(V+-1.4)x0.4 [V]
60kΩ
–4–
NJM2792
www.DataSheet4U.com
! TERMINAL DESCRIPTION
PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT TERMINAL DC VOLTAGE
300Ω
44kΩ 24kΩ 46kΩ
44kΩ 24kΩ 46kΩ 6PIN
6
REF
Reference Voltage
(V+-1.4)x0.6 [V]
300Ω
–5–
NJM2792
www.DataSheet4U.com
s APPLICATION CIRCUIT
CLS 220µF Lift Amp 2 22 µF
+
1
L-GND L-CIN
+
20
L-COUT FL-OUT 36kΩ 24kΩ RL-OUT RL-FB Signal Amp 19 33kΩ 18 22kΩ RL-IN 17
+ +
1.5nF 22 µF RL=10kΩ
3
RL=10kΩ 22kΩ
+
33kΩ FL-FB 4 Signal Amp 5 FL-IN
60kΩ
60kΩ
10µF
Front-Left
Rear-Left
10µF
44kΩ 24kΩ 46kΩ REF 6 47µF
+
V+ 16 .