LME49724MR/NOPB National Semiconductor, LME49724MR/NOPB Datasheet - Page 17

• Manufacturer Part Number: LME49724MR/NOPB
• Description: IC AMP AUDIO MONO AB HIFI 8PSOP
• Manufacturer: National Semiconductor

Specifications of LME49724MR/NOPB

• Amplifier Type: Audio
• Number Of Circuits: 1
• Output Type: Differential
• Slew Rate: 18 V/µs
• Gain Bandwidth Product: 50MHz
• Current - Input Bias: 60nA
• Voltage - Input Offset: 200µV
• Current - Supply: 10mA
• Current - Output / Channel: 80mA
• Voltage - Supply, Single/dual (±): 5 V ~ 36 V, ±2.5 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-PSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -

PERFORMANCE VARIATIONS
The LME49724 has excellent performance with little variation
across different supply voltages, load impedances, and input
configuration (single-ended or differential). Inspection of the
THD+N vs Frequency and THD+N vs Output Voltage perfor-
mance graphs reveals only minimal differences with different
load values. Figures 7 and 8 below show the performance
across different supply voltages with the same output signal
level and load. Figure 7 has plots at ±5V, ±12V, ±15V, and
±18V with a 3V
±15V, and ±18V with a 10V
600Ω load. The performance for each different supply voltage
under the same conditions is so similar it is nearly impossible
to discern the different plots lines.
FIGURE 7. THD+N vs FREQUENCY with R
V
OUT
= 3V
V
S
RMS
= ±5V, ±12V, ±15V, and ±18V
RMS
output while Figure 8 has plots at ±12V,
, Differential Input, 80kHz BW
RMS
output. Both figures use a
FIGURE 6. THD+N and IMD Distortion Test Circuit
300442x5
L
= 600Ω
17
Whether the input configuration is single-ended or differential
has only a minimal affect on THD+N performance at higher
audio frequencies or higher signal levels. For easy compari-
son, Figures 9 and 10 are a combination of the performance
graphs found in the Typical Performance Characteristics sec-
tion above.
FIGURE 8. THD+N vs FREQUENCY with R
V
OUT
= 10V
V
S
RMS
= ±12V, ±15V, and ±18V
, Differential Input, 80kHz BW
300442r5
300442x4
L
www.national.com
= 600Ω