Cellphone ICs

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Part RoHS Manufacturer Telecom IC Type Temperature Grade Terminal Form No. of Terminals Package Code Package Shape Package Body Material Surface Mount No. of Functions Output Code No. of Channels Technology Screening Level No. of Transceivers Maximum Supply Current Nominal Supply Voltage Power Supplies (V) Package Style (Meter) Package Equivalence Code Sub-Category Terminal Pitch Maximum Operating Temperature Resolution (um) Minimum Operating Temperature Maximum Gain Tolerance Terminal Finish Maximum Output Voltage Terminal Position Data Rate JESD-30 Code Output (V) Moisture Sensitivity Level (MSL) Maximum Seated Height Linear Coding Width Qualification Companding Law Input Type Additional Features Maximum Analog Input JESD-609 Code Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Length Filter

LMH6521SQ

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

32

VQCCN

SQUARE

UNSPECIFIED

YES

1

5 V

CHIP CARRIER, VERY THIN PROFILE

.5 mm

85 Cel

-40 Cel

QUAD

S-XQCC-N32

.8 mm

5 mm

5 mm

CC2510F32RSPRG3

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

36

HVQCCN

SQUARE

UNSPECIFIED

YES

1

CMOS

3 V

2.5/3.3

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC36,.25SQ,20

Other Telecom ICs

.5 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

S-XQCC-N36

3

.9 mm

6 mm

Not Qualified

e4

30

260

6 mm

CC2510F16RSPRG3

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

36

HVQCCN

SQUARE

UNSPECIFIED

YES

1

CMOS

3 V

2.5/3.3

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC36,.25SQ,20

Other Telecom ICs

.5 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

S-XQCC-N36

3

.9 mm

6 mm

Not Qualified

e4

30

260

6 mm

CC2420ZRTCR

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

48

HVQCCN

SQUARE

UNSPECIFIED

YES

1

CMOS

1.8 V

1.8,1.8/3.3

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC48,.27SQ,20

Other Telecom ICs

.5 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

S-XQCC-N48

3

.9 mm

7 mm

Not Qualified

e4

30

260

7 mm

TCM320AC56CDWR

Texas Instruments

BASEBAND CIRCUIT

COMMERCIAL

GULL WING

20

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

5 V

SMALL OUTLINE

1.27 mm

70 Cel

0 Cel

DUAL

R-PDSO-G20

2.65 mm

7.5 mm

Not Qualified

12.8 mm

CC2511F8RSP

Texas Instruments

RF AND BASEBAND CIRCUIT

OTHER

NO LEAD

36

HVQCCN

SQUARE

UNSPECIFIED

YES

1

CMOS

3.3 V

3

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC36,.25SQ,20

Other Telecom ICs

.5 mm

85 Cel

0 Cel

Nickel/Palladium/Gold (Ni/Pd/Au)

QUAD

S-XQCC-N36

3

.9 mm

6 mm

Not Qualified

e4

NOT SPECIFIED

260

6 mm

TLV321AC37CN

Texas Instruments

BASEBAND CIRCUIT

COMMERCIAL

THROUGH-HOLE

20

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

1

CMOS

3 V

IN-LINE

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T20

5.08 mm

7.62 mm

Not Qualified

24.325 mm

TCM320AC57N

Texas Instruments

BASEBAND CIRCUIT

INDUSTRIAL

THROUGH-HOLE

20

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

1

5 V

IN-LINE

2.54 mm

85 Cel

-40 Cel

DUAL

R-PDIP-T20

5.08 mm

7.62 mm

Not Qualified

24.325 mm

CC2510F16RSPG3

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

36

HVQCCN

SQUARE

UNSPECIFIED

YES

1

CMOS

3 V

2.5/3.3

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC36,.25SQ,20

Other Telecom ICs

.5 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

S-XQCC-N36

3

.9 mm

6 mm

Not Qualified

e4

30

260

6 mm

TRF96001GQE

Texas Instruments

RF AND BASEBAND CIRCUIT

COMMERCIAL

BALL

80

VFBGA

SQUARE

PLASTIC/EPOXY

YES

1

3 V

GRID ARRAY, VERY THIN PROFILE, FINE PITCH

.5 mm

70 Cel

-20 Cel

BOTTOM

S-PBGA-B80

1 mm

5 mm

Not Qualified

5 mm

TCM8030PN

Texas Instruments

BASEBAND CIRCUIT

INDUSTRIAL

GULL WING

80

LFQFP

SQUARE

PLASTIC/EPOXY

YES

1

CMOS

3 V

3/5

FLATPACK, LOW PROFILE, FINE PITCH

QFP80,.55SQ,20

Other Telecom ICs

.5 mm

85 Cel

-40 Cel

QUAD

S-PQFP-G80

1.6 mm

12 mm

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

12 mm

TRF4900PWG4

Texas Instruments

RF AND BASEBAND CIRCUIT

COMMERCIAL

GULL WING

24

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

3 V

2.5/3.3

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

TSSOP24,.25

Other Telecom ICs

.65 mm

70 Cel

0 Cel

DUAL

R-PDSO-G24

1.2 mm

4.4 mm

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

7.8 mm

TLV320AC57CDWR

Texas Instruments

BASEBAND CIRCUIT

COMMERCIAL

GULL WING

20

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

3 V

SMALL OUTLINE

1.27 mm

70 Cel

0 Cel

DUAL

R-PDSO-G20

2.65 mm

7.5 mm

Not Qualified

12.8 mm

ADC31RF80IRMPT

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

72

HVQCCN

SQUARE

UNSPECIFIED

YES

1

1439 mA

1.15 V

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

.5 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

S-XQCC-N72

3

.9 mm

10 mm

e4

30

260

10 mm

GC5325IZND

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

BALL

352

LBGA

SQUARE

PLASTIC/EPOXY

YES

1

1.2 V

GRID ARRAY, LOW PROFILE

1 mm

85 Cel

-40 Cel

TIN SILVER COPPER

BOTTOM

S-PBGA-B352

3

1.6 mm

27 mm

Not Qualified

e1

30

260

27 mm

LP3939ILQX

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

16

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

1

3 V

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

.5 mm

85 Cel

-40 Cel

QUAD

S-PQCC-N16

.8 mm

4 mm

4 mm

TLV321AC37IDW

Texas Instruments

BASEBAND CIRCUIT

INDUSTRIAL

GULL WING

20

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

3 V

SMALL OUTLINE

1.27 mm

85 Cel

-40 Cel

DUAL

R-PDSO-G20

2.65 mm

7.5 mm

Not Qualified

12.8 mm

TCM320AC56DW

Texas Instruments

BASEBAND CIRCUIT

INDUSTRIAL

GULL WING

20

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

5 V

SMALL OUTLINE

1.27 mm

85 Cel

-40 Cel

DUAL

R-PDSO-G20

2.65 mm

7.5 mm

Not Qualified

12.8 mm

AFE7989IABJ

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

BALL

400

FBGA

SQUARE

PLASTIC/EPOXY

YES

1

GRID ARRAY, FINE PITCH

BGA400,20X20,32

.8 mm

85 Cel

-40 Cel

TIN SILVER COPPER

BOTTOM

S-PBGA-B400

3

2.65 mm

17 mm

RF frequency(Min)(MHz) is 600; RF frequency(Max)(MHz) is 6000

e1

30

260

17 mm

LMH2120UM

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

BALL

6

VFBGA

RECTANGULAR

PLASTIC/EPOXY

YES

1

2.7 V

GRID ARRAY, VERY THIN PROFILE, FINE PITCH

.4 mm

85 Cel

-40 Cel

BOTTOM

R-PBGA-B6

.47 mm

.825 mm

Not Qualified

1.225 mm

TRF4903PW

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

GULL WING

24

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

.042 mA

2.7 V

2.7

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

TSSOP24,.25

Other Telecom ICs

.65 mm

85 Cel

-40 Cel

DUAL

R-PDSO-G24

1.2 mm

4.4 mm

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

7.8 mm

TLV320AC56IDWR

Texas Instruments

BASEBAND CIRCUIT

INDUSTRIAL

GULL WING

20

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

3 V

SMALL OUTLINE

1.27 mm

85 Cel

-40 Cel

DUAL

R-PDSO-G20

2.65 mm

7.5 mm

Not Qualified

12.8 mm

LMH2121TME/NOPB

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

BALL

4

VFBGA

RECTANGULAR

PLASTIC/EPOXY

YES

1

1

4.7 mA

2.7 V

GRID ARRAY, VERY THIN PROFILE, FINE PITCH

.4 mm

85 Cel

-40 Cel

TIN SILVER COPPER

BOTTOM

R-PBGA-B4

1

.675 mm

.858 mm

e1

30

260

1.058 mm

ADS58C20IPFPR

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

GULL WING

80

HTFQFP

SQUARE

PLASTIC/EPOXY

YES

1

FLATPACK, HEAT SINK/SLUG, THIN PROFILE, FINE PITCH

QFP80,.55SQ,20

.5 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

S-PQFP-G80

3

1.2 mm

12 mm

3.45 V

e4

30

260

12 mm

CC2510F32RSP

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

36

HVQCCN

SQUARE

UNSPECIFIED

YES

1

CMOS

3 V

2.5/3.3

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC36,.25SQ,20

Other Telecom ICs

.5 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

S-XQCC-N36

3

.9 mm

6 mm

Not Qualified

e4

30

260

6 mm

LMV228SDX/NOPB

Texas Instruments

RF AND BASEBAND CIRCUIT

MATTE TIN

1

e3

30

260

CC2420RGZR

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

48

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

1

CMOS

3.3 V

1.8,1.8/3.3

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC48,.27SQ,20

Other Telecom ICs

.5 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

S-PQCC-N48

3

1 mm

7 mm

Not Qualified

e4

30

260

7 mm

TRF6901PTRG4

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

GULL WING

48

LFQFP

SQUARE

PLASTIC/EPOXY

YES

1

2.7 V

FLATPACK, LOW PROFILE, FINE PITCH

.5 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

S-PQFP-G48

1

1.6 mm

7 mm

Not Qualified

e4

30

260

7 mm

CC2420-RTB2

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

48

HVQCCN

SQUARE

UNSPECIFIED

YES

1

CMOS

1.8 V

1.8,1.8/3.3

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC48,.27SQ,20

Other Telecom ICs

.5 mm

85 Cel

-40 Cel

QUAD

S-XQCC-N48

.9 mm

7 mm

Not Qualified

7 mm

1200

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

20

HVQCCN

SQUARE

UNSPECIFIED

YES

1

CMOS

3 V

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

.5 mm

85 Cel

-40 Cel

QUAD

S-XQCC-N20

.95 mm

4 mm

Not Qualified

4 mm

LMH6521SQE

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

32

VQCCN

SQUARE

UNSPECIFIED

YES

1

5 V

CHIP CARRIER, VERY THIN PROFILE

.5 mm

85 Cel

-40 Cel

QUAD

S-XQCC-N32

.8 mm

5 mm

5 mm

TCM320AC56CDW

Texas Instruments

BASEBAND CIRCUIT

COMMERCIAL

GULL WING

20

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

.0099 mA

5 V

5

SMALL OUTLINE

SOP20,.4

Codecs

1.27 mm

70 Cel

0 Cel

1 dB

DUAL

R-PDSO-G20

2.65 mm

13-BIT

7.5 mm

Not Qualified

MU-LAW

NOT SPECIFIED

NOT SPECIFIED

12.8 mm

YES

LMH2120UM/NOPB

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

BALL

6

VFBGA

RECTANGULAR

PLASTIC/EPOXY

YES

1

1

4 mA

4.5 V

GRID ARRAY, VERY THIN PROFILE, FINE PITCH

.4 mm

85 Cel

-40 Cel

TIN SILVER COPPER

BOTTOM

R-PBGA-B6

1

.47 mm

.816 mm

e1

30

260

1.216 mm

LMH6522SQE

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

54

HVQCCN

RECTANGULAR

UNSPECIFIED

YES

1

5 V

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

.5 mm

85 Cel

-40 Cel

QUAD

R-XQCC-N54

.8 mm

5.5 mm

10 mm

LMV226URX

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

BALL

4

VFBGA

SQUARE

PLASTIC/EPOXY

YES

1

2.7 V

GRID ARRAY, VERY THIN PROFILE, FINE PITCH

.5 mm

85 Cel

-40 Cel

TIN LEAD

BOTTOM

S-PBGA-B4

1

.425 mm

.975 mm

Not Qualified

e0

40

260

.975 mm

TRF6900APTG4

Texas Instruments

RF AND BASEBAND CIRCUIT

COMMERCIAL

GULL WING

48

LFQFP

SQUARE

PLASTIC/EPOXY

YES

1

CMOS

.05 mA

3 V

3

FLATPACK, LOW PROFILE, FINE PITCH

QFP48,.35SQ,20

Other Telecom ICs

.5 mm

60 Cel

-20 Cel

NICKEL PALLADIUM GOLD

QUAD

S-PQFP-G48

1

1.6 mm

7 mm

Not Qualified

e4

30

260

7 mm

CC2420-RTB1

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

48

HVQCCN

SQUARE

UNSPECIFIED

YES

1

CMOS

1.8 V

1.8,1.8/3.3

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC48,.27SQ,20

Other Telecom ICs

.5 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

S-XQCC-N48

3

.9 mm

7 mm

Not Qualified

e4

30

260

7 mm

TCM320AC57DW

Texas Instruments

BASEBAND CIRCUIT

INDUSTRIAL

GULL WING

20

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

5 V

SMALL OUTLINE

1.27 mm

85 Cel

-40 Cel

DUAL

R-PDSO-G20

2.65 mm

7.5 mm

Not Qualified

12.8 mm

CC2511F32RSPG3

Texas Instruments

RF AND BASEBAND CIRCUIT

OTHER

NO LEAD

36

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

1

CMOS

3 V

3

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC36,.25SQ,20

Other Telecom ICs

.5 mm

85 Cel

0 Cel

Nickel/Palladium/Gold (Ni/Pd/Au)

QUAD

S-PQCC-N36

3

.9 mm

6 mm

Not Qualified

e4

NOT SPECIFIED

260

6 mm

LMH6523SQE

Texas Instruments

RF AND BASEBAND CIRCUIT

TLV320AC56CPT

Texas Instruments

BASEBAND CIRCUIT

COMMERCIAL

GULL WING

48

LFQFP

SQUARE

PLASTIC/EPOXY

YES

1

CMOS

.0075 mA

3 V

3

FLATPACK, LOW PROFILE, FINE PITCH

QFP48,.35SQ,20

Codecs

.5 mm

70 Cel

0 Cel

1 dB

QUAD

S-PQFP-G48

1.6 mm

13-BIT

7 mm

Not Qualified

MU-LAW

NOT SPECIFIED

NOT SPECIFIED

7 mm

YES

LMV228UR

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

BALL

4

VFBGA

SQUARE

PLASTIC/EPOXY

YES

1

2.7 V

GRID ARRAY, VERY THIN PROFILE, FINE PITCH

.5 mm

85 Cel

-40 Cel

TIN LEAD

BOTTOM

S-PBGA-B4

1

.425 mm

.975 mm

Not Qualified

e0

40

260

.975 mm

TRF4900PWR

Texas Instruments

RF AND BASEBAND CIRCUIT

COMMERCIAL

GULL WING

24

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

.075 mA

3 V

3

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

TSSOP24,.25

Other Telecom ICs

.65 mm

60 Cel

-20 Cel

DUAL

R-PDSO-G24

1.2 mm

4.4 mm

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

7.8 mm

TS3A26746EYZPR

Texas Instruments

BASEBAND CIRCUIT

INDUSTRIAL

BALL

6

VFBGA

RECTANGULAR

UNSPECIFIED

YES

1

2

.05 mA

3.3 V

GRID ARRAY, VERY THIN PROFILE, FINE PITCH

.5 mm

85 Cel

-40 Cel

TIN SILVER COPPER

BOTTOM

R-XBGA-B6

1

.5 mm

.9 mm

Not Qualified

e1

30

260

1.4 mm

LMV232TL/NOPB

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

BALL

8

VFBGA

SQUARE

PLASTIC/EPOXY

YES

1

2

13 mA

2.7 V

GRID ARRAY, VERY THIN PROFILE, FINE PITCH

.5 mm

85 Cel

-40 Cel

TIN SILVER COPPER

BOTTOM

S-PBGA-B8

1

.675 mm

1.5095 mm

e1

30

260

1.5095 mm

TCM320AC57DWR

Texas Instruments

BASEBAND CIRCUIT

INDUSTRIAL

GULL WING

20

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

5 V

SMALL OUTLINE

1.27 mm

85 Cel

-40 Cel

DUAL

R-PDSO-G20

2.65 mm

7.5 mm

Not Qualified

12.8 mm

LMH6522SQ/NOPB

Texas Instruments

RF AND BASEBAND CIRCUIT

INDUSTRIAL

NO LEAD

54

HVQCCN

RECTANGULAR

UNSPECIFIED

YES

1

4

485 mA

5 V

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

.5 mm

85 Cel

-40 Cel

25.74 dB

MATTE TIN

QUAD

R-XQCC-N54

2

.8 mm

5.5 mm

e3

30

260

10 mm

TRF6900PT

Texas Instruments

RF AND BASEBAND CIRCUIT

COMMERCIAL

GULL WING

48

LFQFP

SQUARE

PLASTIC/EPOXY

YES

1

CMOS

2.2/3.6

FLATPACK, LOW PROFILE, FINE PITCH

QFP48,.35SQ,20

Other Telecom ICs

.5 mm

60 Cel

-20 Cel

QUAD

S-PQFP-G48

1.6 mm

7 mm

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

7 mm

Cellphone ICs

Cellphone ICs (Integrated Circuits) are the electronic components that provide the processing power and functionality for modern cellphones. They are responsible for a wide range of functions, including signal processing, data storage, and communication protocols.

Some common types of cellphone ICs include:

1. Baseband processors: These ICs are responsible for handling the core functions of a cellphone, such as making calls and sending messages. They also manage the cellphone's power consumption and system resources.

2. Radio frequency (RF) transceivers: These ICs are responsible for transmitting and receiving RF signals over cellular networks. They also provide the ability to switch between different network bands and frequencies.

3. Power management ICs: These ICs manage the power supply and battery life of a cellphone. They regulate voltage and current to ensure efficient operation and prevent damage to the device.

4. Memory ICs: These ICs provide storage for the cellphone's operating system, applications, and user data. They include flash memory, RAM, and other types of non-volatile memory.

5. Sensor ICs: These ICs provide sensing capabilities, such as accelerometers, gyroscopes, and proximity sensors. They enable the cellphone to detect motion, orientation, and other environmental conditions.