LM4937RL/NOPB National Semiconductor, LM4937RL/NOPB Datasheet - Page 9

• Manufacturer Part Number: LM4937RL/NOPB
• Description: IC AUDIO SUBSYSTM 1.25W 36USMDXT
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4937RL/NOPB

• Output Type: 1-Channel (Mono) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 1.25W x 1 @ 8 Ohm; 80mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Depop, Differential Inputs, I²C, I²S, Mute, Shutdown, SPI, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 36-MicroSMDxt
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM4937RLTR

V
V
IH
IL
Note 1: All voltages are measured with respect to the GND pin unless otherwise specified.
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions
which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters
where no limit is given, however, the typical value is a good indication of device performance.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
with V
Note 4: Human body model: 100pF discharged through a 1.5kΩ resistor.
Note 5: Machine model: 220pF - 240pF discharged through all pins.
Note 6: Typicals are measured at 25°C and represent the parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9: Shutdown current is measured in a normal room environment.
Note 10: Internal DAC only with DAC modes 00 and 01.
Note 11: Enabling mono bit (D_6 in Output Control Register 01h) will save 400μA (typ) from specified current.
Symbol
DD
= 3.3V, R
Digital Input High Voltage
Digital Input Low Voltage
L
= 8Ω stereo operation, the total power dissipation is TBDW. θ
Parameter
DMAX
= (T
JMAX
– T
A
) / θ
JA
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4937 typical application
9
JA
Conditions
= TBD°C/W.
JMAX
,θ
JA
, and the ambient temperature, T
LM4937
(Note 6)
Typical
(Notes 7,
VDD_IO
VDD_IO
Limits
0.7 x
0.3x
8)
A
. The maximum
www.national.com
(Limits)
V (max)
V (min)
Units