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Home > Products > Integrated Circuits (ICs) > Audio Special Purpose

Diodes Incorporated PAM8100RRR

Name: PAM8100RRR
Brand: Diodes Incorporated
SKU: PAM8100RRR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PAM8100RRR

Manufacturer:: Diodes Incorporated

Category:: Audio Special Purpose

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: PAM8100RRR.pdf

Description:: IC LINE DRIVER 14TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:4,966

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Product details

Overview

PAM8100RRR from Diodes Incorporated is a 3-V_RMS pop-free stereo line driver IC with differential inputs, adjustable gain (±1 to ±10 V/V), and integrated charge-pump architecture enabling capacitorless output coupling. It delivers 3 V_RMS into 2.5-kΩ at 5 V supply, supports mute-controlled pop-free startup/shutdown, and features external undervoltage detection. It is used in compact audio front-ends of consumer video equipment requiring low-noise, high-SNR analog signal conditioning.

For engineers reviewing the PAM8100RRR datasheet, PAM8100RRR pinout, PAM8100RRR application, or PAM8100RRR equivalent, key selection criteria include its 104 dB SNR, <0.0015% THD+N at 2 V_RMS, 20 Hz–20 kHz flat frequency response, TSSOP-14 package compatibility, and capacitorless 3-V_RMS drive capability into high-impedance loads.

Technical Context

The PAM8100RRR implements dual rail-to-rail op-amps with internal charge-pump generating ±V_DD rails for true DC-coupled output swing. Its differential input stage rejects common-mode noise while external resistor networks set precise gain without trimming.

It integrates dual independent mute paths: one digital (MUTE pin) for immediate channel muting, and one analog (UVP pin) tied to an external voltage divider for supply brownout protection. The charge-pump operates at 200–400 kHz and supports up to 470 pF capacitive load stability.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3 V_RMS into 2.5-kΩ @ 5 V supply - enables direct interface to line-level ADCs or codec inputs without coupling caps
THD+N	0.0015% @ 2 V_RMS, 1 kHz - ensures fidelity in high-resolution audio playback paths
SNR	104 dB A-weighted - suppresses audible noise floor in quiet listening environments
Gain Range	±1 V/V to ±10 V/V via external resistors - allows flexible signal scaling across source types (DAC, tuner, Bluetooth baseband)
Supply Range	2.5 V to 5 V - supports operation from single Li-ion or regulated 3.3 V/5 V rails
Input Type	Differential - rejects PCB-level EMI and power-supply ripple in noisy system environments
Charge-Pump Freq	200–400 kHz - avoids audible switching artifacts and simplifies EMI filtering

Pinout & Package

The PAM8100RRR is housed in a 14-pin TSSOP package (5.0 mm × 4.4 mm, 0.65 mm pitch) with exposed thermal pad (PGND-connected) for enhanced thermal dissipation in space-constrained audio modules.

Pin/Terminal	Circuit Role	Design Meaning
+INL / +INR	Left/right positive input	Differential input terminals accepting AC-coupled or DC-coupled line-level signals
-INL / -INR	Left/right negative input	Completes differential pair; enables common-mode rejection and balanced layout routing
OUTL / OUTR	Left/right output	Rail-to-rail outputs driven by internal charge-pump - no external DC-blocking capacitors required
MUTE	Digital mute control	Active-high logic input; asserts fast, pop-free muting of both channels simultaneously
UVP	External undervoltage sense	Analog input monitoring supply rail via resistor divider; triggers mute below 1.25 V threshold
CP / CN	Charge-pump flying capacitor terminals	Connect external 1 µF ceramic capacitor to generate bipolar supply rails internally
PVDD / PVSS	Positive/negative supply rails	PVDD = main V_DD; PVSS = charge-pump negative rail - both require local 1 µF decoupling
SGND / PGND	Signal/power ground	Separate ground returns minimize noise coupling between analog signal path and charge-pump switching

Key Features

Feature	Design Value
Capacitorless output coupling	Eliminates two 1–10 µF electrolytic or tantalum DC-blocking capacitors per channel - reduces BOM count, board area, and aging-related drift
Pop-free startup/shutdown	Integrated soft-mute logic synchronized with charge-pump ramp-up/down prevents transient clicks during power sequencing
Flat 20 Hz–20 kHz response	No high-pass filtering from coupling caps - preserves full audio bandwidth including bass fundamentals and LFE content
Low-noise architecture	13 µV_RMS input-referred noise and >70 dB PSRR ensure clean signal transfer even with noisy mixed-signal SoCs
Configurable gain	External R_IN/R_FB network sets precise gain without laser trimming - supports factory calibration or variant tuning

Applications

Home Theater Audio Front-End

Blu-ray Player Line Output Stage

Use Scenario: Driving line inputs of powered subwoofers or external DACs in compact home theater systems with tight PCB real estate.

IC Role / Device Role / Timing Role: Stereo line driver providing DC-coupled, low-noise, 3-V_RMS outputs compliant with IEC 60268-3 standard.

Use Value: Removes four large electrolytic capacitors, reducing height and cost while maintaining THD+N <0.002% across full bandwidth.

Use Scenario: Interfacing HDMI audio extractor or BD-ROM DAC to analog RCA outputs in Blu-ray disc players.

IC Role / Device Role / Timing Role: Dual-channel line driver with independent mute control for left/right channels during format switching.

Use Value: Enables silent channel switching and eliminates click artifacts during Dolby Digital ↔ DTS transitions.

LCD TV Audio Subsystem

Set-Top Box Analog Audio Output

Use Scenario: Delivering stereo line-level signals from SoC audio engine to internal speaker amplifier or external headphone jack.

IC Role / Device Role / Timing Role: Low-voltage line driver operating from 3.3 V supply with integrated UVP for brownout-safe muting.

Use Value: Supports 2.5 V–5 V supply range and provides 104 dB SNR - meets broadcast audio fidelity requirements without external regulators.

Use Scenario: Providing legacy RCA audio outputs in cable/satellite STBs where space and component count are constrained.

IC Role / Device Role / Timing Role: Pop-free stereo driver with differential inputs rejecting digital noise from nearby QAM demodulators.

Use Value: Differential input + 110 dB crosstalk isolation prevents left/right channel bleed in multi-stream decoding scenarios.

Equivalent & Alternatives

The following parts are listed as comparable options for similar stereo line driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
PAM8908	Successor device with improved PSRR (80 dB), lower THD+N (0.0009%), and extended supply range (2.0–5.5 V)	Supports lower-voltage SoCs (e.g., 2.5 V AVDD rails); same TSSOP-14 footprint but different pinout (UVP relocated)	Select PAM8908 for new designs requiring higher PSRR or wider supply tolerance; not pin-compatible with PAM8100RRR
TPA6138A2	TI device with integrated headphone amp (125 mW), fixed 2× gain, no charge pump - requires output coupling caps	Targets dual-role line-out + headphone output; lacks capacitorless architecture and external gain adjustment	Choose only if headphone drive capability is needed; otherwise PAM8100RRR offers superior SNR and design flexibility

Compared with PAM8908 and TPA6138A2, the PAM8100RRR uniquely balances capacitorless operation, user-adjustable gain, and industry-leading 104 dB SNR in a mature, production-proven TSSOP-14 package - making it optimal for cost-sensitive, space-constrained line-output stages where design stability is prioritized over latest-spec enhancements.

Availability

PAM8100RRR is available at Aetrix Electronics and suitable for LCD TVs, Blu-ray players, set-top boxes, and home theater receivers requiring stable component supply, long-lifecycle support, and RoHS-compliant green packaging.

Supply support for PAM8100RRR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance, energy-efficient solutions for consumer, computing, and industrial markets.

The PAM8100RRR belongs to Diodes' PAM audio line driver family, designed specifically for capacitorless, low-noise, high-fidelity analog output stages in space- and cost-constrained consumer audio products.

FAQ

What is the minimum recommended supply voltage for reliable operation?

The PAM8100RRR operates reliably down to 2.5 V per the Recommended Operating Conditions table. At 2.5 V, it delivers 1.6 V_RMS into 2.5-kΩ with THD+N <0.003%. Operation below 2.5 V risks UVP activation and output muting; absolute minimum is –0.3 V (per Absolute Maximum Ratings), but functional operation is not guaranteed below 2.5 V.

Can the PAM8100RRR drive 600-Ω professional audio loads?

No - the PAM8100RRR is specified for high-impedance line-level loads (≥600 Ω minimum, typical ≥2.5 kΩ). Driving 600 Ω causes THD+N to rise above 0.01% and may trigger thermal shutdown due to increased output current. For 600-Ω loads, use dedicated line drivers like DRV632 or NJM2114.

How does the external UVP circuit function?

The UVP pin monitors a resistor divider from PVDD to GND. When voltage at UVP falls below 1.25 V (with 5 µA hysteresis current), the device mutes outputs. A typical divider uses 100 kΩ (top) and 47 kΩ (bottom) for ~1.25 V trip at 3.3 V supply - ensuring mute before system brownout affects downstream components.

Is the PAM8100RRR pin-compatible with the PAM8908?

No - although both are TSSOP-14 stereo line drivers, the PAM8908 relocates the UVP pin from Pin 11 to Pin 5 and swaps MUTE and SGND positions. PCB layout and firmware GPIO assignments must be revised; no mechanical or electrical drop-in replacement is possible without redesign.

PAM8100RRR Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Function:: Line Driver

Applications:: Consumer Audio

Number of Channels:: 2

Interface:: -

Voltage - Supply:: 2.5V ~ 5V

Operating Temperature:: -40°C ~ 85°C (TA)

Specifications:: -

Mounting Type:: Surface Mount

Grade:: -

PAM8100RRR FAQ

1.How can I place an order for PAM8100RRR through Aetrix?

Please submit a Request for Quotation (RFQ) for PAM8100RRR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for PAM8100RRR reliable?

The price and inventory of PAM8100RRR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM8100RRR is usually 5 days.

3.What payment methods are accepted for PAM8100RRR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM8100RRR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PAM8100RRR?

PAM8100RRR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PAM8100RRR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for PAM8100RRR?

For technical support, including PAM8100RRR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM8100RRR requirements.

6.How does Aetrix verify that PAM8100RRR is sourced from the original manufacturer or authorized distributors?

All PAM8100RRR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PAM8100RRR meets industry standards.

7.What is the process for return or replacement of PAM8100RRR?

All PAM8100RRR units undergo pre-shipment inspection (PSI). If there is an issue with PAM8100RRR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The PAM8100RRR part is unused and in its original packaging.

Return procedure for PAM8100RRR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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