Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Audio amplifier 1-channel (mono) Class AB SOIC 8

TPA311

350-mW MONO AUDIO POWER AMPLIFIER

SLOS207C – JANUARY 1998 – REVISED MAY 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Fully Specified for 3.3-V and 5-V Operation

D Wide Power Supply Compatibility

2.5 V – 5.5 V

D Output Power for R

= 8 Ω

– 350 mW at V

= 5 V, BTL

– 250 mW at V

= 5 V, SE

– 250 mW at V

= 3.3 V, BTL

– 75 mW at V

= 3.3 V, SE

D Shutdown Control

– I

= 7 µA at 3.3 V

– I

= 60 µA at 5 V

D BTL to SE Mode Control

D Integrated Depop Circuitry

D Thermal and Short-Circuit Protection

D Surface Mount Packaging

– SOIC

– PowerPAD MSOP

description

The TPA311 is a bridge-tied load (BTL) or

single-ended (SE) audio power amplifier devel-

oped especially for low-voltage applications

where internal speakers and external earphone

operation are required. Operating with a 3.3-V

supply, the TPA311 can deliver 250-mW of

continuous power into a BTL 8-Ω load at less than 1% THD+N throughout voice band frequencies. Although

this device is characterized out to 20 kHz, its operation was optimized for narrower band applications such as

cellular communications. The BTL configuration eliminates the need for external coupling capacitors on the

output in most applications, which is particularly important for small battery-powered equipment. A unique

feature of the TPA311 is that it allows the amplifier to switch from BTL to SE on the fly when an earphone drive

is required. This eliminates complicated mechanical switching or auxiliary devices just to drive the external load.

This device features a shutdown mode for power-sensitive applications with special depop circuitry to virtually

eliminate speaker noise when exiting shutdown mode and during power cycling. The TPA311 is available in an

8-pin SOIC surface-mount package and the surface-mount PowerPAD MSOP, which reduces board space by

50% and height by 40%.

Audio

Input

Bias

Control

350 mW

BYPASS

SE/BTL

SHUTDOWN

From HP Jack

–8

GND

From System Control

–

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

SHUTDOWN

BYPASS

SE/BTL

–

GND

D OR DGN PACKAGE

(TOP VIEW)

PowerPAD is a trademark of Texas Instruments.

Summary of content (39 pages)

PAGE 1
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 D Fully Specified for 3.3-V and 5-V Operation D Wide Power Supply Compatibility 2.5 V – 5.5 V Output Power for RL = 8 Ω – 350 mW at VDD = 5 V, BTL – 250 mW at VDD = 5 V, SE – 250 mW at VDD = 3.3 V, BTL – 75 mW at VDD = 3.3 V, SE D D Shutdown Control D D D D – IDD = 7 µA at 3.
PAGE 2
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 AVAILABLE OPTIONS PACKAGED DEVICES TA SMALL OUTLINE† (D) MSOP Symbolization MSOP† (DGN) – 40°C to 85°C TPA311D TPA311DGN AAB † The D and DGN packages are available taped and reeled. To order a taped and reeled part, add the suffix R to the part number (e.g., TPA311DR). Terminal Functions TERMINAL NAME NO. I/O DESCRIPTION I BYPASS is the tap to the voltage divider for internal mid-supply bias.
PAGE 3
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 recommended operating conditions ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Supply voltage, VDD High level voltage, voltage VIH High-level Low level
PAGE 4
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 electrical characteristics at specified free-air temperature, VDD = 5 V, TA = 25°C (unless otherwise noted) ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ
PAGE 5
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 PARAMETER MEASUREMENT INFORMATION VDD 6 RF VDD/2 Audio Input RI VDD CS 1 µF 4 IN 2 BYPASS – CI VO+ 5 + CB 0.1 µF RL = 8 Ω – VO– 8 + 7 1 SHUTDOWN 3 SE/BTL GND Bias Control Figure 1. BTL Mode Test Circuit VDD 6 RF Audio Input RI VDD CS 1 µF VDD/2 4 IN 2 BYPASS – CI VO+ 5 + CC 330 µF CB 0.1 µF RL = 32 Ω – VO– 8 + 7 VDD 1 SHUTDOWN 3 SE/BTL GND Bias Control Figure 2.
PAGE 6
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS Table of Graphs FIGURE IDD PO Supply voltage rejection ratio vs Frequency Supply current vs Supply voltage Output power THD + N Vn PD 8, 9 vs Load resistance 10, 11 vs Frequency 12, 13, 16, 17, 20, 21, 24, 25, 28, 29, 32, 33 vs Output power 14, 15, 18, 19, 22, 23, 26, 27, 30, 31, 34, 35 Total harmonic distortion plus noise Open loop gain and phase vs Frequency 36, 37 Closed loop g
PAGE 7
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs SUPPLY VOLTAGE SUPPLY VOLTAGE REJECTION RATIO vs FREQUENCY 1.1 0 –20 0.9 I DD– Supply Current – mA –10 –30 –40 –50 VDD = 5 V –60 –70 VDD = 3.3 V –80 SE/BTL = 0.1 VDD 0.7 0.5 SE/BTL = 0.9 VDD 0.3 0.1 –90 –0.
PAGE 8
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS OUTPUT POWER vs SUPPLY VOLTAGE OUTPUT POWER vs SUPPLY VOLTAGE 1000 350 THD+N 1% BTL THD+N 1% SE 300 PO – Output Power – mW PO – Output Power – mW 800 600 RL = 8 Ω 400 RL = 32 Ω 250 200 RL = 8 Ω 150 100 RL = 32 Ω 200 50 0 2 2.5 3 3.5 4 4.5 5 0 5.5 2 3 2.5 VDD – Supply Voltage – V Figure 8 4.5 5 5.
PAGE 9
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY 10 VDD = 3.3 V PO = 250 mW RL = 8 Ω BTL THD+N –Total Harmonic Distortion + Noise – % THD+N –Total Harmonic Distortion + Noise – % 10 AV = –20 V/V 1 AV = –10 V/V AV = –2 V/V 0.1 0.01 20 100 1k 10k 20k PO = 125 mW 0.
PAGE 10
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY 10 VDD = 5 V PO = 350 mW RL = 8 Ω BTL THD+N –Total Harmonic Distortion + Noise – % THD+N –Total Harmonic Distortion + Noise – % 10 AV = –20 V/V 1 AV = –10 V/V AV = –2 V/V 0.1 0.01 20 100 1k 10k VDD = 5 V RL = 8 Ω AV = –2 V/V BTL 1 PO = 175 mW 0.1 PO = 350 mW 0.
PAGE 11
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY 10 THD+N –Total Harmonic Distortion + Noise – % THD+N –Total Harmonic Distortion + Noise – % 10 VDD = 3.3 V PO = 30 mW RL = 32 Ω SE 1 0.1 AV = –1 V/V AV = –10 V/V 0.01 AV = –5 V/V 0.001 20 100 1k 10k VDD = 3.3 V RL = 32 Ω AV = –1 V/V SE 1 PO = 10 mW 0.1 0.01 PO = 15 mW PO = 30 mW 0.
PAGE 12
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY 10 THD+N –Total Harmonic Distortion + Noise – % THD+N –Total Harmonic Distortion + Noise – % 10 VDD = 5 V PO = 60 mW RL = 32 Ω SE 1 AV = –10 V/V 0.1 AV = –5 V/V 0.01 AV = –1 V/V 0.001 20 100 1k 1 PO = 15 mW 0.1 PO = 30 mW 0.01 PO = 60 mW 0.
PAGE 13
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY 1 THD+N –Total Harmonic Distortion + Noise – % THD+N –Total Harmonic Distortion + Noise – % 1 VDD = 3.3 V PO = 0.1 mW RL = 10 kΩ SE 0.1 AV = –1 V/V AV = –2 V/V AV = –5 V/V 0.01 20 100 1k 10k VDD = 3.3 V RL = 10 kΩ AV = –1 V/V SE PO = 0.05 mW 0.1 PO = 0.1 mW 0.01 20 20k PO = 0.
PAGE 14
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY 1 THD+N –Total Harmonic Distortion + Noise – % THD+N –Total Harmonic Distortion + Noise – % 1 VDD = 5 V PO = 0.3 mW RL = 10 kΩ SE 0.1 AV = –1 V/V AV = –2 V/V AV = –5 V/V 0.01 20 100 1k 10k VDD = 5 V RL = 10 kΩ AV = –1 V/V SE PO = 0.3 mW 0.1 PO = 0.2 mW PO = 0.1 mW 0.
PAGE 15
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS OPEN-LOOP GAIN AND PHASE vs FREQUENCY 40 180 VDD = 3.
PAGE 16
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS CLOSED-LOOP GAIN AND PHASE vs FREQUENCY 1 180 Phase 0.75 170 0.25 0 160 Gain –0.25 150 –0.5 –0.75 140 –1 –1.25 –1.5 –1.75 –2 101 Phase – ° Closed-Loop Gain – dB 0.5 VDD = 3.3 V RL = 8 Ω PO = 0.25 W CI =1 µF BTL 102 130 103 104 105 106 120 f – Frequency – Hz Figure 38 CLOSED-LOOP GAIN AND PHASE vs FREQUENCY 1 180 Phase 0.75 170 0.25 0 160 Gain –0.25 150 –0.5 –0.
PAGE 17
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS CLOSED-LOOP GAIN AND PHASE vs FREQUENCY 7 180 Phase 6 170 Gain 160 4 150 3 140 2 1 0 –1 –2 –3 101 VDD = 3.
PAGE 18
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS OUTPUT NOISE VOLTAGE vs FREQUENCY 100 VDD = 3.3 V BW = 22 Hz to 22 kHz RL = 32 Ω CB =0.1 µF AV = –1 V/V Vn – Output Noise Voltage – µ V(rms) Vn – Output Noise Voltage – µ V(rms) 100 OUTPUT NOISE VOLTAGE vs FREQUENCY VO BTL 10 VO+ 1 20 100 1k 10 k VDD = 5 V BW = 22 Hz to 22 kHz RL = 32 Ω CB =0.
PAGE 19
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 TYPICAL CHARACTERISTICS POWER DISSIPATION vs OUTPUT POWER 720 180 640 160 PD – Power Dissipation – mW PD – Power Dissipation – mW POWER DISSIPATION vs OUTPUT POWER 560 480 400 320 VDD = 5 V RL = 8 Ω BTL 240 200 400 600 800 1000 140 120 100 80 RL = 32 Ω VDD = 5 V SE 60 160 0 RL = 8 Ω 1200 40 0 50 PO – Output Power – mW 100 150 200 250 300 PO – Output Power – mW Figure 46 Figure 47 APPLICATION
PAGE 20
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 APPLICATION INFORMATION bridge-tied load versus single-ended mode (continued) VDD VO(PP) RL 2x VO(PP) VDD –VO(PP) Figure 48. Bridge-Tied Load Configuration In typical portable handheld equipment, a sound channel operating at 3.3 V and using bridging raises the power into an 8-Ω speaker from a single-ended (SE, ground reference) limit of 62.5 mW to 250 mW.
PAGE 21
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 APPLICATION INFORMATION bridge-tied load versus single-ended mode (continued) VDD –3 dB VO(PP) CC RL VO(PP) fc Figure 49. Single-Ended Configuration and Frequency Response Increasing power to the load does carry a penalty of increased internal power dissipation. The increased dissipation is understandable, considering that the BTL configuration produces 4× the output power of the SE configuration.
PAGE 22
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 APPLICATION INFORMATION BTL amplifier efficiency (continued) Although the voltages and currents for SE and BTL are sinusoidal in the load, currents from the supply are very different between SE and BTL configurations. In an SE application the current waveform is a half-wave rectified shape whereas, in BTL it is a full-wave rectified waveform. This means RMS conversion factors are different.
PAGE 23
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 APPLICATION INFORMATION application schematic Figure 51 is a schematic diagram of a typical handheld audio application circuit, configured for a gain of –10 V/V. CF 5 pF Audio Input RF 50 kΩ VDD 6 VDD VDD/2 RI 10 kΩ CI 0.47 µF 4 IN 2 BYPASS – VO+ 5 CC 330 µF CS 1 µF + 1 kΩ CB 2.2 µF – VO– 8 + From System Control 0.1 µF 1 SHUTDOWN 3 SE/BTL 7 GND Bias Control 100 kΩ VDD 100 kΩ Figure 51.
PAGE 24
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 APPLICATION INFORMATION component selection (continued) As an example consider an input resistance of 10 kΩ and a feedback resistor of 50 kΩ. The BTL gain of the amplifier would be –10 V/V and the effective impedance at the inverting terminal would be 8.3 kΩ, which is well within the recommended range.
PAGE 25
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 APPLICATION INFORMATION component selection (continued) In this example, CI is 0.40 µF, so one would likely choose a value in the range of 0.47 µF to 1 µF. A further consideration for this capacitor is the leakage path from the input source through the input network (RI, CI) and the feedback resistor (RF) to the load.
PAGE 26
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 APPLICATION INFORMATION single-ended operation (continued) The output coupling capacitor required in single-supply SE mode also places additional constraints on the selection of other components in the amplifier circuit. The rules described earlier still hold with the addition of the following relationship: ǒC B 10 1 v Ơ 1 ǒRF ) RIǓ CI RLCC 250 kΩǓ (12) As an example, consider a circuit where CB is 0.2.2 µF, CI is 0.
PAGE 27
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 APPLICATION INFORMATION SE/BTL operation The ability of the TPA311 to easily switch between BTL and SE modes is one of its most important cost saving features. This feature eliminates the requirement for an additional earphone amplifier in applications where internal speakers are driven in BTL mode but external earphone or speaker must be accommodated. Internal to the TPA311, two separate amplifiers drive VO+ and VO–.
PAGE 28
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 APPLICATION INFORMATION 5-V versus 3.3-V operation The TPA311 operates over a supply range of 2.5 V to 5.5 V. This data sheet provides full specifications for 5-V and 3.3-V operation, as these are considered to be the two most common standard voltages. There are no special considerations for 3.3-V versus 5-V operation with respect to supply bypassing, gain setting, or stability.
PAGE 29
TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 APPLICATION INFORMATION headroom and thermal considerations (continued) This is valuable information to consider when attempting to estimate the heat dissipation requirements for the amplifier system. Comparing the absolute worst case, which is 350 mW of continuous power output with 0 dB of headroom, against 12 dB and 15 dB applications drastically affects maximum ambient temperature ratings for the system.
PAGE 30
PACKAGE OPTION ADDENDUM www.ti.
PAGE 31
PACKAGE OPTION ADDENDUM www.ti.com (4) 24-Jan-2013 Only one of markings shown within the brackets will appear on the physical device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information.
PAGE 32
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPA311DGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPA311DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
PAGE 33
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPA311DGNR MSOP-PowerPAD DGN 8 2500 358.0 335.0 35.0 TPA311DR SOIC D 8 2500 367.0 367.0 35.
PAGE 34
PAGE 35
PAGE 36
PAGE 37
PAGE 38
PAGE 39
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.