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Home > Products > Integrated Circuits (ICs) > Linear > Video Processing

NXP Semiconductors TDA9830/V1,112

Name: TDA9830/V1,112
Brand: NXP Semiconductors
SKU: TDA9830/V1,112
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA9830/V1,112

Manufacturer:: NXP Semiconductors

Category:: Video Processing

Package:: 16-DIP (0.300", 7.62mm)

Datasheet:: TDA9830/V1,112.pdf

Description:: IC VIDEO DEMODULATOR 16DIP

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Product details

Overview

TDA9830/V1,112 from NXP Semiconductors (formerly Philips) is a monolithic TV sound AM-demodulator and audio source switch IC designed for L- and L'-standard analog television receivers. It integrates a wideband synchronous AM demodulator (6–70 MHz IF bandwidth), low-noise audio mute/switch function, and dual-supply operation (5–8 V or 12 V). It delivers 500 mV RMS AF output with 53 dB S/N ratio (CCIR 468-3) and 90 dB mute attenuation, enabling direct integration into legacy TV audio signal paths.

For engineers reviewing the TDA9830/V1,112 datasheet, TDA9830/V1,112 pinout, TDA9830/V1,112 application, or TDA9830/V1,112 equivalent, key selection considerations include its dual-voltage supply compatibility (V_P1: 4.5–8.8 V / V_P2: 10.8–13.2 V), 30 mA typical supply current, 66 dB gain control range, 700 kHz audio switch bandwidth, and DIL-16 (SOT38) package with verified pin mapping for IF differential input, AGC capacitor, reference filtering, and switch control logic.

Technical Context

The TDA9830/V1,112 implements a three-stage AC-coupled differential IF amplifier with current-distribution gain control (−6 to +60 dB range, 10 mV/dB steepness) and a synchronous in-phase AM demodulator using limiter-multiplier architecture. Its internal bandgap reference (~3.6 V) stabilizes biasing across temperature and supply variations.

Audio switching is realized via an op-amp-based triple-input stage (AMIN, EXTIN, internal mute) with 0 dB nominal gain, controlled by digital-level SWITCH (pin 10) and MUTE (pin 12) inputs. The IC supports two independent power domains: 5–8 V primary supply (pin 14) and optional 12 V alternative (pin 11), with internal voltage division to protect high-frequency circuit blocks.

Key Specifications

Parameter	Value and Actual Design Meaning
IF Bandwidth	6–70 MHz (−3 dB); enables full L/L′ standard TV sound IF processing without external tuning
AF Output Level	500 mV RMS at pin 6 (m = 54%); directly interfaces with downstream audio amplifiers without level-shifting
S/N Ratio	53 dB (CCIR 468-3 weighted); meets EN50049 audio quality requirements for broadcast reception
Mute Attenuation	90 dB (20 Hz–20 kHz); ensures silent channel switching in multi-source TV audio systems
Supply Current	30 mA typical; supports low-power TV standby and active modes with thermal resistance of 74 K/W (SOT38)
Gain Control Range	66 dB typical; provides robust AGC response to varying IF signal strength across antenna environments
Audio Switch Bandwidth	100 kHz (−3 dB upper limit); preserves full audible spectrum for stereo or mono TV audio
THD (AF Output)	0.8% typical at 500 mV RMS; maintains fidelity under standard broadcast modulation conditions

Pinout & Package

Package: Plastic dual in-line package (DIP), 16 leads, 300 mil body width (SOT38-1), JEDEC MS-001AE compliant. Thermal resistance R_{th j-a} = 74 K/W in free air.

Pin/Terminal	Circuit Role	Design Meaning
1, 16	IFIN	Differential sound IF input (1.75–2.65 kΩ input impedance); accepts 60–100 µV RMS signals for −3 dB AF output
3	CAGC	AGC capacitor connection; sets AGC time constant to control THD vs. low-frequency response trade-off
4	CREF	Reference voltage filter capacitor; reduces noise on internal ~3.6 V bandgap reference
6	AMOUT	AM demodulator output (500 mV RMS, 2.15 V DC offset); directly drives audio switch input (pin 7) with minimal coupling capacitance
7	AMIN	Internal AM audio input to switch; DC potential matches AMOUT to minimize switching pop (≤10 mV typical)
8	AFOUT	Final audio output (70–150 Ω output impedance); delivers buffered signal to volume control or power amp
9	EXTIN	External audio source input (1.2 V RMS max, <1.5% THD); enables auxiliary audio injection (e.g., VCR, tuner)
10	SWITCH	Source select control (0–0.8 V = AMIN; 1.5–V_P = EXTIN); TTL/CMOS-compatible logic interface
11	Vp2	+12 V alternative supply input; internally divided to ~6 V for core circuitry when Vp1 is unused
12	MUTE	Mute enable control (0–0.8 V = mute ON; 1.5–V_P = mute OFF); provides 90 dB signal suppression
13	GND	Analog ground reference (0 V); must be star-connected to minimize noise coupling into IF/AF paths
14	Vp1	+5 to +8 V primary supply input; powers all functional blocks when Vp2 is left unconnected

Key Features

Feature	Design Value
Adjustment-free synchronous AM demodulation	Eliminates external alignment components and drift-sensitive passive filters for stable L/L′ standard decoding
Integrated audio source selector with mute	Reduces BOM count by replacing discrete op-amps, switches, and mute transistors in TV mainboards
Dual-supply flexibility (5–8 V or 12 V)	Supports both legacy 5 V TV logic rails and 12 V analog subsystems without external regulators
Low-pop switching architecture	DC-matched AMOUT and audio switch bias minimizes transient voltage spikes (<10 mV) during source transitions
CCIR 468-3 compliant S/N and THD	Guarantees broadcast-grade audio performance without post-processing or calibration
Internal bandgap reference	Stabilizes gain, offset, and switching thresholds across temperature (0–70°C) and supply variation

Applications

TV Analog Sound Demodulation	Multi-Source Audio Routing
Use Scenario: Processing sound IF signals from PAL/SECAM L- and L′-standard TV tuners in CRT and early flat-panel receivers. IC Role / Device Role / Timing Role: Primary AM demodulator and IF-to-AF converter; provides baseband audio synchronized to video timing. Use Value: Delivers 53 dB S/N and 500 mV output directly compatible with TV audio amplifiers, eliminating external demodulator stages.	Use Scenario: Selecting between internal TV audio (AM demodulated) and external sources (e.g., VCR line-in, auxiliary tuner). IC Role / Device Role / Timing Role: Dual-input audio switch with hardware-controlled mute; enables seamless source transitions without software intervention. Use Value: 90 dB mute attenuation and <10 mV switching pop ensure silent channel changes required for broadcast user experience.
Legacy Broadcast Receiver Design	EN50049-Compliant Audio Stage
Use Scenario: Building cost-sensitive analog TV sets targeting European L/L′ broadcast standards with strict EMI and audio quality mandates. IC Role / Device Role / Timing Role: Integrated IF amplifier, demodulator, and audio switch; replaces ≥3 discrete ICs in traditional TV signal chains. Use Value: Reduces PCB area by 40% versus discrete solutions while maintaining 6–70 MHz IF bandwidth and CCIR-compliant distortion.	Use Scenario: Meeting EN50049 audio level and noise specifications for certified TV receivers sold in EU markets. IC Role / Device Role / Timing Role: Final audio conditioning block ensuring standardized output level (500 mV RMS) and weighted S/N (53 dB). Use Value: Built-in compliance eliminates need for external test-and-tune calibration, accelerating CE certification cycles.

TV Analog Sound Demodulation

Multi-Source Audio Routing

Use Scenario: Processing sound IF signals from PAL/SECAM L- and L′-standard TV tuners in CRT and early flat-panel receivers.

IC Role / Device Role / Timing Role: Primary AM demodulator and IF-to-AF converter; provides baseband audio synchronized to video timing.

Use Value: Delivers 53 dB S/N and 500 mV output directly compatible with TV audio amplifiers, eliminating external demodulator stages.

Use Scenario: Selecting between internal TV audio (AM demodulated) and external sources (e.g., VCR line-in, auxiliary tuner).

IC Role / Device Role / Timing Role: Dual-input audio switch with hardware-controlled mute; enables seamless source transitions without software intervention.

Use Value: 90 dB mute attenuation and <10 mV switching pop ensure silent channel changes required for broadcast user experience.

Legacy Broadcast Receiver Design

EN50049-Compliant Audio Stage

Use Scenario: Building cost-sensitive analog TV sets targeting European L/L′ broadcast standards with strict EMI and audio quality mandates.

IC Role / Device Role / Timing Role: Integrated IF amplifier, demodulator, and audio switch; replaces ≥3 discrete ICs in traditional TV signal chains.

Use Value: Reduces PCB area by 40% versus discrete solutions while maintaining 6–70 MHz IF bandwidth and CCIR-compliant distortion.

Use Scenario: Meeting EN50049 audio level and noise specifications for certified TV receivers sold in EU markets.

IC Role / Device Role / Timing Role: Final audio conditioning block ensuring standardized output level (500 mV RMS) and weighted S/N (53 dB).

Use Value: Built-in compliance eliminates need for external test-and-tune calibration, accelerating CE certification cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar AM demodulator and audio switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDA9830T	SO-16 (SOT109) surface-mount package; identical electrical specs but 100 K/W thermal resistance	Requires reflow soldering and PCB layout revision; unsuitable for through-hole legacy TV designs	Select TDA9830T only when migrating to compact SMT assembly with thermal management provisions.
LA75550	Single 5 V supply only; no 12 V option; 45 dB S/N (CCIR), lower IF sensitivity (120 µV RMS min)	Limited to newer low-voltage TV platforms; cannot replace TDA9830/V1,112 in 12 V or high-sensitivity L′-standard systems	Use LA75550 only in cost-optimized 5 V-only designs where 53 dB S/N and 60 µV sensitivity are non-critical.

Compared with TDA9830T and LA75550, the TDA9830/V1,112 uniquely supports dual-supply operation (5–8 V or 12 V), achieves superior 53 dB S/N and 60 µV IF sensitivity, and is validated for through-hole DIP-16 assembly-making it the sole option for drop-in replacement in legacy L/L′ TV mainboards requiring full spec compliance.

Availability

TDA9830/V1,112 is available at Aetrix Electronics and suitable for analog TV receiver manufacturing, broadcast equipment repair, and legacy consumer electronics refurbishment requiring stable component supply and long-term obsolescence support.

Supply support for TDA9830/V1,112 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

NXP Semiconductors, headquartered in Eindhoven, Netherlands, develops high-performance analog and mixed-signal ICs for automotive, industrial, and consumer applications, with deep heritage in broadcast and TV signal processing from its Philips Semiconductors roots.

The TDA9830/V1,112 belongs to NXP's legacy TV signal processing product line, engineered specifically for L- and L′-standard analog television receivers to integrate AM demodulation, audio switching, and compliance-grade audio conditioning in a single DIP-16 package.

FAQ

What is the primary function of the TDA9830/V1,112 in analog TV systems?

The TDA9830/V1,112 serves as a combined TV sound AM-demodulator and audio source switch for L- and L′-standard broadcast reception. It converts sound IF signals (6–70 MHz) into baseband audio, provides gain control, and selects between internal AM audio and external sources with hardware mute. Its design enables direct integration into analog TV mainboards without external alignment components, and the TDA9830/V1,112 meets EN50049 audio level and CCIR 468-3 S/N requirements out-of-the-box.

Does the TDA9830/V1,112 support both 5 V and 12 V power supplies simultaneously?

No, the TDA9830/V1,112 supports either 5–8 V operation at pin 14 (Vp1) or 12 V operation at pin 11 (Vp2), but not both simultaneously. The unused supply pin must remain unconnected to prevent internal voltage conflict. When powered from Vp2 (12 V), internal circuitry is regulated to ~6 V to protect high-frequency blocks, and performance remains comparable to Vp1 operation per the datasheet. This dual-supply flexibility makes the TDA9830/V1,112 adaptable to diverse TV platform architectures.

What is the significance of the CAGC (pin 3) and CREF (pin 4) capacitors in the TDA9830/V1,112 circuit?

The CAGC capacitor at pin 3 sets the time constant for automatic gain control, directly influencing low-frequency THD and AGC reaction speed to IF level changes. The CREF capacitor at pin 4 filters noise from the internal ~3.6 V bandgap reference voltage, ensuring stable biasing for IF amplification, demodulation, and audio switching. Both capacitors are critical for achieving specified S/N (53 dB), THD (<0.8%), and mute attenuation (90 dB); incorrect values degrade audio fidelity and cause switching artifacts. These external components are mandatory and must be selected per the TDA9830/V1,112 datasheet recommendations.

Can the TDA9830/V1,112 be used in modern digital TV designs?

The TDA9830/V1,112 is purpose-built for analog TV L- and L′-standard sound IF processing and is not intended for digital TV (DTV) or ATSC/DVB systems, which use digital audio decoding (e.g., MPEG, AC-3). Its 6–70 MHz IF bandwidth, AM demodulation architecture, and EN50049 compliance target legacy broadcast infrastructure. While it may function in hybrid systems with analog front-ends, the TDA9830/V1,112 offers no advantage over modern digital audio processors and lacks interfaces like I²C or SPDIF. For new designs, NXP recommends evaluating current-generation audio SoCs instead of the TDA9830/V1,112.

How does the TDA9830/V1,112 handle audio switching pop, and what design practices minimize it?

The TDA9830/V1,112 minimizes audio switching pop through DC voltage matching between AMOUT (pin 6) and the audio switch input bias (pin 7), resulting in ≤10 mV typical transient during source transitions. To maintain this, decoupling capacitors at pins 7 and 9 are required to isolate internal bias voltages from external signal sources. Omitting the capacitor between pins 6 and 7 increases pop to ≤100 mV. Layout best practices include star grounding at pin 13, short traces for IF inputs (pins 1/16), and separate AGC/CREF capacitor routing-all documented in the TDA9830/V1,112 reference schematics.

TDA9830/V1,112 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: 16-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Function:: Demodulator

Applications:: Consumer Video

Standards:: -

Control Interface:: -

Voltage - Supply:: 4.5V ~ 8.8V, 10.8V ~ 13.2V

Mounting Type:: Through Hole

Grade:: -

Qualification:: -

Supplier Device Package:: 16-DIP

TDA9830/V1,112 FAQ

1.How can I place an order for TDA9830/V1,112 through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA9830/V1,112 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 TDA9830/V1,112 reliable?

The price and inventory of TDA9830/V1,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA9830/V1,112 is usually 5 days.

3.What payment methods are accepted for TDA9830/V1,112?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA9830/V1,112 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA9830/V1,112?

TDA9830/V1,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA9830/V1,112 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 TDA9830/V1,112?

For technical support, including TDA9830/V1,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA9830/V1,112 requirements.

6.How does Aetrix verify that TDA9830/V1,112 is sourced from the original manufacturer or authorized distributors?

All TDA9830/V1,112 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 TDA9830/V1,112 meets industry standards.

7.What is the process for return or replacement of TDA9830/V1,112?

All TDA9830/V1,112 units undergo pre-shipment inspection (PSI). If there is an issue with TDA9830/V1,112, 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 TDA9830/V1,112 part is unused and in its original packaging.

Return procedure for TDA9830/V1,112:

1.Submit a request within 90 days.

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

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