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LM4938 bảng dữ liệu(PDF) 4 Page - Texas Instruments

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LM4938 bảng dữ liệu(HTML) 4 Page - Texas Instruments

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LM4938
SNAS245B – FEBRUARY 2005 – REVISED MAY 2013
www.ti.com
Electrical Characteristics for Entire IC
(1) (2)
The following specifications apply for VDD = 5V unless otherwise noted. Limits apply for TA = 25°C.
LM4938
Units
Symbol
Parameter
Conditions
(Limits)
Typical(3)
Limit(4)
VDD
Supply Voltage
2.7
V (min)
5.5
V (max)
IDD
Quiescent Power Supply Current
VIN = 0V, IO = 0A
11
30
mA (max)
ISD
Shutdown Current
Vshutdown = VDD
0.5
2.0
μA (max)
VIH
Headphone Sense High Input Voltage
4
V (min)
VIL
Headphone Sense Low Input Voltage
0.8
V (max)
(1)
All voltages are measured with respect to the ground pins, unless otherwise specified. All specifications are tested using the typical
application as shown in Figure 1.
(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 ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(3)
Typicals are measured at 25°C and represent the parametric norm.
(4)
Limits are specified to Texas Instruments' AOQL (Average Outgoing Quality Level). Datasheet min/max specification limits are specified
by design, test, or statistical analysis.
Electrical Characteristics for Volume Attenuators
(1) (2)
The following specifications apply for VDD = 5V. Limits apply for TA = 25°C.
LM4938
Units
Symbol
Parameter
Conditions
(Limits)
Typical(3)
Limit(4)
Gain accuracy with VDCVol = 5V,
±0.5
±0.75
dB (max)
No Load
Gain accuracy with VDCVol < 0.5V,
CRANGE
Attenuator Range
±2
dB (max)
No Load
Attenuation with VDCVol = 0V
dB (min)
89
75
(BM & SE)
AM
Mute Attenuation
Vmute = 5V, Bridged Mode (BM)
89
78
dB (min)
Vmute = 5V, Single-Ended Mode (SE)
78
dB (min)
(1)
All voltages are measured with respect to the ground pins, unless otherwise specified. All specifications are tested using the typical
application as shown in Figure 1.
(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 ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(3)
Typicals are measured at 25°C and represent the parametric norm.
(4)
Limits are specified to Texas Instruments' AOQL (Average Outgoing Quality Level). Datasheet min/max specification limits are specified
by design, test, or statistical analysis.
4
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Copyright © 2005–2013, Texas Instruments Incorporated
Product Folder Links: LM4938


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