NJM2073M NJR, NJM2073M Datasheet - Page 5

• Manufacturer Part Number: NJM2073M
• Description: IC PWR AMP DUAL LOW-VOLT 8-DMP
• Manufacturer: NJR
• Type: Class ABr

Specifications of NJM2073M

• Output Type: 1-Channel (Mono) or 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 2W x 1 @ 16 Ohm; 270mW x 2 @ 8 Ohm
• Voltage - Supply: 1.8 V ~ 15 V
• Features: Depop
• Mounting Type: Surface Mount
• Package / Case: 8-DMP
• Product: Class-AB
• Output Power: 2 W
• Available Set Gain: 44 dB
• Thd Plus Noise: 0.2 %
• Operating Supply Voltage: 3 V, 5 V, 9 V, 12 V
• Supply Current: 6 mA
• Maximum Power Dissipation: 300 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 16 Ohms
• Input Bias Current (max): 0.1 uA
• Input Signal Type: Differential
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Differential
• Supply Type: Single
• Supply Voltage (max): 15 V
• Supply Voltage (min): 1.8 V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

■ PARASTIC OSCILLATION PREVEMTING CIRCUIT
frequency characteristics in to near ground and supply voltage pins.
same value of pure resistance(r) when it is lower than 3V.
■ MUTING CIRCUIT
■ VOLTAGE GAIN REDUCTION APPLICATION EXAMPLE
minus input helps to get reduction of stabilized Voltage Gain.Fig.5 indicates the model example.
as DC condition,(inserting C
phase margin.The reduction of voltage gain is limited at around 26dB (20 times),and when oscillation,it in necessary to attach the
oscillation stopper.Please examine the C
Fig.5 Model of Voltage Gain Reduction
Ver.2004-03-01
In BTL operation of less than 2V supply voltage,parastic oscillation may be occurred with R=1Ω.And so recommended R to be the
When Mute ON.OUTPUT level saturates to GND side.
Put 1Ω+0.22µF on parallel to load,if the load is speaker.Recommend putting 0.1µF and more than 100µF capacitors with good high
(1) Outline of way to further Reduction
NJM2073 by taking in assamption,as one of OP-AMP ( Gain 44dB,minus input impedance about 300Ω ),to feedback from output to
Here is the point to be noticed that,in order to get the appropriate output Bias Voltage,it is important to keep the minus input floating
Fig.3 BTL Configuration
X
),and also that when extended too much reduction of Gain might cause Oscillation due to high band
X
value accordingly to the application requirement.
Fig.4 Stereo Configuration
- 5 -