LM4931

SNAS251E – APRIL 2004 – REVISED MAY 2013

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Absolute Maximum Ratings

(1) (2)

Analog Supply Voltage

6.0V

Digital Supply Voltage

6.0V

Storage Temperature

-65°C to +150°C

Power Dissipation(3)

Internally Limited

ESD Susceptibility

Human Body Model(4)

2500V

Machine Model(5)

200V

Junction Temperature

150°C

Thermal Resistance

θJA - YZR0042

105°C/W

(1)

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.

(2)

All voltages are measured with respect to the relevant GND pin unless otherwise specified. All grounds should be coupled as close as

possible to the device.

(3)

The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX ,θJA, and the ambient temperature,

TA. The maximum allowable power dissipation is PDMAX = (TJMAX – TA) / θJA or the number given in Absolute Maximum Ratings,

whichever is lower. For the LM4931, see power derating currents for more information.

(4)

Human body model: 100pF discharged through a 1.5k

Ω resistor.

(5)

Machine model: 220pF - 240pF discharged through all pins.

Operating Ratings

Temperature Range

TMIN ≤ TA ≤ TMAX

−40°C ≤ TA ≤ +85°C

DVDD

(1)

2.7V - 4.0V

Supply Voltage

AVDD

(1)

2.7V - 5.0V

(1)

Best operation is achieved by maintaining 3.0V

≤ AVDD ≤ 5.0 and 3.0V ≤ DVDD ≤ 3.6V and AVDD ≥ DVDD.

Electrical Characteristics DVDD = 3V, AVDD = 3V, RLHP = 32Ω, RLHF = 8Ω

(1) (2)

The following specifications apply for the circuit shown in Figure 62, unless otherwise specified. Limits apply for TA = 25°C.

Symbol

Parameter

Conditions

LM4931

Units

(Limits)

Typical(3

Limits(4)

)

Power

Mode 0

DISD

Digital Shutdown Current

fMLCK = 12MHz

(5)

400

500

μA (max)

No MCLK

1

2

μA (max)

DIST

Digital Standby Current

Mode 1, fMCLK = 12MHz

400

1200

μA (max)

fMLCK = 12MHz

Mode 2, 3, 4

1.3

3.2

mA (max)

DIDD

Digital Power Supply Current

Mode 5, 6, 7

2.8

7

mA (max)

Mode 8, 9, 10

3.2

7.5

mA (max)

PLLIDD

PLL Quiescent Current

fMCLK = 12MHz

2.8

3.5

mA (max)

AISD

Analog Shutdown Current

Mode 0, No load

0.1

2.5

μA (max)

AIST

Analog Standby Current

Mode 1, No load

100

200

μA (max)

(1)

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.

(2)

All voltages are measured with respect to the relevant GND pin unless otherwise specified. All grounds should be coupled as close as

possible to the device.

(3)

Typicals are measured at 25°C and represent the parametric norm.

(4)

Limits are ensured to TI’s AOQL (Average Outgoing Quality Level).

(5)

Digital shutdown current is measured with system clock set for PLL output while the PLL is disabled.

4

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