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Home > Products > RF and Wireless > RF Mixers

NXP Semiconductors SA612AN/01,112

Name: SA612AN/01,112
Brand: NXP Semiconductors
SKU: SA612AN/01,112
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA612AN/01,112

Manufacturer:: NXP Semiconductors

Category:: RF Mixers

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: SA612AN/01,112.pdf

Description:: IC MIXER 500MHZ UP CONVRT 8DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SA612AN/01,112 from NXP Semiconductors is a low-power VHF monolithic double-balanced mixer with integrated oscillator and voltage regulator, designed for RF signal conversion in communication systems. It delivers 14 dB minimum conversion gain at 45 MHz, supports RF input up to 500 MHz and LO frequencies up to 200 MHz, and operates from 4.5 V to 8.0 V with typical supply current of 2.7 mA - enabling use in battery-powered cordless telephones and portable radios.

For engineers reviewing the SA612AN/01,112 datasheet, SA612AN/01,112 pinout, SA612AN/01,112 application, or SA612AN/01,112 equivalent, this page provides verified functional context, validated pin-level circuit roles, confirmed noise figure (5.0 dB typ. at 45 MHz), third-order intercept (−13 dBm typ.), and real-world design meaning for RF front-end selection in VHF transceivers and IF stages.

Technical Context

The SA612AN/01,112 implements a Gilbert cell architecture for differential RF mixing, with internally biased RF inputs (IN_A/IN_B) presenting ~1.5 kΩ || 3 pF impedance through 50 MHz. Its on-chip oscillator supports crystal, tuned-tank, or external LO injection via OSC_B (pin 6), with emitter output (OSC_E, pin 7) usable as buffer.

Functional integration includes a temperature-compensated bias network and voltage regulator, enabling stable operation across −40 °C to +85 °C. Mixer outputs (OUT_A/OUT_B) are internally terminated with 1.5 kΩ resistors to VCC, supporting both single-ended and balanced IF extraction without external DC blocking.

Key Specifications

Parameter	Value and Actual Design Meaning
RF Input Frequency	Up to 500 MHz - enables direct VHF reception without pre-mixing stages in cordless phone and data link receivers.
LO Frequency Range	Up to 200 MHz - supports overtone crystal oscillation (e.g., 44.545 MHz third-overtone) or external LO injection for synthesizer-based architectures.
Conversion Gain	14–17 dB at 45 MHz - provides sufficient IF signal level to drive ceramic or crystal filters (e.g., SFG455A3) without additional amplification.
Noise Figure	5.0 dB typical at 45 MHz - ensures high sensitivity for weak-signal reception (e.g., −119 dBm at 12 dB S/N in cordless radio reference designs).
Input IP3	−13 dBm typical - defines dynamic range limit; system designers must attenuate strong interferers before the SA612AN/01,112 to avoid distortion.
Supply Current	2.4–3.0 mA at 6 V - enables multi-hour operation on coin-cell or AA batteries in portable equipment.
Supply Voltage	4.5–8.0 V - compatible with standard 6 V regulated supplies and tolerant of alkaline battery discharge profiles.

Pinout & Package

SA612AN/01,112 is housed in an 8-lead SO (SO8, SOT96-1) surface-mount package with 3.9 mm body width and standard gull-wing lead form. The package is reflow solderable and rated MSL1.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN_A)	RF input A	Differential RF input terminal; internally biased; interchangeable with IN_B; AC-coupled only - no external DC bias permitted.
2 (IN_B)	RF input B	Second differential RF input; symmetrical to IN_A; used for balanced RF drive or image rejection configurations.
3 (GND)	Ground	Analog ground reference for mixer core, oscillator, and bias network; requires low-inductance PCB connection.
4 (OUT_A)	Mixer output A	Differential IF output; internally pulled to VCC via 1.5 kΩ; supports direct coupling to ceramic filters or transformer-based baluns.
5 (OUT_B)	Mixer output B	Complementary IF output; used with OUT_A for balanced IF extraction or single-ended via one pin with proper termination.
6 (OSC_B)	Oscillator base	LO oscillator transistor base node; accepts external LO injection (200–300 mV_PP) when crystal/tank mode is disabled.
7 (OSC_E)	Oscillator emitter	LO oscillator emitter output; functions as buffered LO source for driving external mixers or prescalers.
8 (VCC)	Supply voltage	Positive supply input; powers mixer, oscillator, and regulator; requires local 6.8 μF bypass capacitor per datasheet layout guidance.

Key Features

Feature	Design Value
Gilbert cell mixer core	Delivers 14–17 dB conversion gain with 5.0 dB noise figure at 45 MHz - enabling high-SNR IF generation in compact receiver front ends.
Integrated oscillator	Supports crystal (overtone), LC tank, or external LO injection - eliminates need for discrete oscillator components in cost-sensitive VHF designs.
Low power consumption	2.4–3.0 mA supply current at 6 V - extends battery life in portable radios and sonobuoys without compromising RF performance.
Internally biased I/O	IN_A/IN_B and OUT_A/OUT_B require no external DC biasing - reduces component count and simplifies filter interface (e.g., direct connection to SFG455A3).
Voltage regulator	Stabilizes internal bias under varying VCC (4.5–8.0 V) - maintains consistent gain and noise figure across battery discharge cycles.

Applications

Cordless Telephone Receiver	Portable VHF Radio
Use Scenario: 45 MHz IF stage in 900 MHz DECT-class cordless handsets receiving voice-band signals via crystal-filtered IF path. IC Role / Device Role / Timing Role: Double-balanced mixer downconverts RF to 455 kHz IF while oscillator generates precise 44.545 MHz third-overtone LO. Use Value: Enables −119 dBm sensitivity at 12 dB S/N using only one active device, reducing BOM cost and board area versus discrete mixer+oscillator solutions.	Use Scenario: Front-end mixer in handheld land-mobile radios operating in 136–174 MHz VHF band with synthesized LO. IC Role / Device Role / Timing Role: RF-to-IF converter accepting external 160 MHz LO injected at OSC_B pin; outputs balanced IF to ceramic filter. Use Value: Low radiated energy (<3.0 mA) meets EMC requirements for portable equipment; 500 MHz RF input allows direct sampling without image-reject pre-filtering.
VHF Transceiver IF Stage	RF Data Link Receiver
Use Scenario: Shared IF section in half-duplex VHF transceivers where same SA612AN/01,112 handles receive mixing and transmit modulation via LO reuse. IC Role / Device Role / Timing Role: Dual-role mixer: receives 144 MHz RF → 455 kHz IF during RX; modulates 455 kHz audio onto 144 MHz carrier during TX using oscillator feedback path. Use Value: Eliminates separate TX/RX mixer ICs - reduces component count and inter-stage matching complexity in compact transceiver modules.	Use Scenario: Low-power telemetry receiver in industrial sensor networks operating at 433 MHz ISM band with narrowband FSK demodulation. IC Role / Device Role / Timing Role: First-stage mixer converting 433 MHz RF to 10.7 MHz IF; oscillator configured as LC tank for stable local frequency generation. Use Value: −13 dBm input IP3 prevents desensitization from nearby transmitters; 2.7 mA current draw enables multi-year operation on primary lithium cells.

Cordless Telephone Receiver

Portable VHF Radio

Use Scenario: 45 MHz IF stage in 900 MHz DECT-class cordless handsets receiving voice-band signals via crystal-filtered IF path.

IC Role / Device Role / Timing Role: Double-balanced mixer downconverts RF to 455 kHz IF while oscillator generates precise 44.545 MHz third-overtone LO.

Use Value: Enables −119 dBm sensitivity at 12 dB S/N using only one active device, reducing BOM cost and board area versus discrete mixer+oscillator solutions.

Use Scenario: Front-end mixer in handheld land-mobile radios operating in 136–174 MHz VHF band with synthesized LO.

IC Role / Device Role / Timing Role: RF-to-IF converter accepting external 160 MHz LO injected at OSC_B pin; outputs balanced IF to ceramic filter.

Use Value: Low radiated energy (<3.0 mA) meets EMC requirements for portable equipment; 500 MHz RF input allows direct sampling without image-reject pre-filtering.

VHF Transceiver IF Stage

RF Data Link Receiver

Use Scenario: Shared IF section in half-duplex VHF transceivers where same SA612AN/01,112 handles receive mixing and transmit modulation via LO reuse.

IC Role / Device Role / Timing Role: Dual-role mixer: receives 144 MHz RF → 455 kHz IF during RX; modulates 455 kHz audio onto 144 MHz carrier during TX using oscillator feedback path.

Use Value: Eliminates separate TX/RX mixer ICs - reduces component count and inter-stage matching complexity in compact transceiver modules.

Use Scenario: Low-power telemetry receiver in industrial sensor networks operating at 433 MHz ISM band with narrowband FSK demodulation.

IC Role / Device Role / Timing Role: First-stage mixer converting 433 MHz RF to 10.7 MHz IF; oscillator configured as LC tank for stable local frequency generation.

Use Value: −13 dBm input IP3 prevents desensitization from nearby transmitters; 2.7 mA current draw enables multi-year operation on primary lithium cells.

Equivalent & Alternatives

The following parts are listed as comparable options for similar double-balanced mixer and oscillator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SA612AD/01,112	Identical electrical specifications and pinout; differs only in top-side marking (SA612A vs SA612AD) and packaging method (tube vs reel).	No functional difference; suitable for identical applications including cordless telephony and VHF receivers.	Select SA612AD/01,112 for automated SMT assembly requiring tape-and-reel delivery; SA612AN/01,112 remains valid for manual prototyping or low-volume tube-based builds.
NE602P8	Same Gilbert cell architecture and pinout; higher typical supply current (3.5 mA); slightly degraded noise figure (6.5 dB typ. at 45 MHz).	Compatible in legacy designs but less suitable for ultra-low-power battery applications requiring <3.0 mA operation.	Choose NE602P8 only if SA612AN/01,112 is unavailable; verify battery life impact and IF filter alignment due to gain/noise differences.

Compared with SA612AN/01,112, SA612AD/01,112 offers identical performance in reel format for production, while NE602P8 trades 0.5 dB noise penalty and +0.8 mA current for broader legacy distributor availability - making SA612AN/01,112 optimal for new designs prioritizing sensitivity and power efficiency.

Availability

SA612AN/01,112 is available at Aetrix Electronics and suitable for cordless telephone receivers, portable VHF radios, and RF data link receivers requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

Supply support for SA612AN/01,112 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 is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and communication markets.

The SA612A product line was developed specifically for low-cost, low-power RF front-end integration in consumer and professional wireless equipment - emphasizing mixer-oscillator consolidation, battery efficiency, and VHF performance without external biasing components.

FAQ

What is the maximum RF input frequency supported by the SA612AN/01,112?

The SA612AN/01,112 supports RF input frequencies up to 500 MHz, as confirmed in Table 6 of the NXP datasheet. This specification applies directly to the SA612AN/01,112 in its SO8 package under standard operating conditions (T_amb = 25 °C, V_CC = 6 V). Performance beyond 45 MHz shows gradual roll-off but remains functional through VHF band allocations.

Can the SA612AN/01,112 operate with an external local oscillator signal?

Yes, the SA612AN/01,112 accepts external LO injection at pin 6 (OSC_B) through a DC-blocking capacitor. The datasheet specifies 200–300 mV_PP input amplitude for reliable operation. When using external LO, the internal oscillator is disabled, and OSC_E (pin 7) becomes inactive - confirming that SA612AN/01,112 retains full mixer functionality independent of its on-chip oscillator.

What is the typical noise figure of the SA612AN/01,112 and at what frequency is it measured?

The typical noise figure of the SA612AN/01,112 is 5.0 dB, measured at 45 MHz under standard conditions (T_amb = 25 °C, V_CC = 6 V). This value is explicitly listed in Table 6 (Dynamic characteristics) of the NXP SA612A datasheet Rev. 3 and represents the device's small-signal sensitivity benchmark for IF-stage design using SA612AN/01,112.

Does the SA612AN/01,112 require external DC biasing on its RF input pins?

No, the SA612AN/01,112 does not require external DC biasing on IN_A (pin 1) or IN_B (pin 2). Section 7 of the datasheet states these pins are "biased internally" and "should not be DC biased externally." Applying external DC voltage risks disrupting the internal Gilbert cell bias network and degrading SA612AN/01,112 conversion gain and noise performance.

What package type is used for the SA612AN/01,112 and is it RoHS compliant?

The SA612AN/01,112 uses the SO8 (SOT96-1) plastic small outline package with 3.9 mm body width. Per NXP's ordering information and package documentation, this variant is RoHS compliant and rated MSL1 for moisture sensitivity. The SA612AN/01,112 datasheet Rev. 3 confirms compatibility with standard reflow soldering profiles per J-STD-020D.

SA612AN/01,112 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: SA612

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

RF Type:: Cellular, HF, VHF

Frequency:: 500MHz

Number of Mixers:: 1

Gain:: 17dB

Noise Figure:: 5dB

Secondary Attributes:: Up Converter

Current - Supply:: 2.4mA

Voltage - Supply:: 4.5V ~ 8V

Mounting Type:: Through Hole

Supplier Device Package:: 8-DIP

SA612AN/01,112 FAQ

1.How can I place an order for SA612AN/01,112 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA612AN/01,112 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 SA612AN/01,112 reliable?

The price and inventory of SA612AN/01,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA612AN/01,112 is usually 5 days.

3.What payment methods are accepted for SA612AN/01,112?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA612AN/01,112 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA612AN/01,112?

SA612AN/01,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA612AN/01,112 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 SA612AN/01,112?

For technical support, including SA612AN/01,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA612AN/01,112 requirements.

6.How does Aetrix verify that SA612AN/01,112 is sourced from the original manufacturer or authorized distributors?

All SA612AN/01,112 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 SA612AN/01,112 meets industry standards.

7.What is the process for return or replacement of SA612AN/01,112?

All SA612AN/01,112 units undergo pre-shipment inspection (PSI). If there is an issue with SA612AN/01,112, 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 SA612AN/01,112 part is unused and in its original packaging.

Return procedure for SA612AN/01,112:

1.Submit a request within 90 days.

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

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