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Home > Products > RF and Wireless > RF Mixers

NXP Semiconductors SA606D/01,118

Name: SA606D/01,118
Brand: NXP Semiconductors
SKU: SA606D/01,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA606D/01,118

Manufacturer:: NXP Semiconductors

Category:: RF Mixers

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: SA606D/01,118.pdf

Description:: IC MIXER 150MHZ UP CONVRT 20SO

Quantity:: RFQ Add To RFQ list

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Inventory:4,833

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Product details

Overview

SA606D/01,118 from NXP Semiconductors is a low-voltage monolithic FM IF system integrating mixer/oscillator, dual limiting IF amplifiers, quadrature detector, logarithmic RSSI, voltage regulator, and rail-to-rail audio/RSSI op amps. It operates down to 2.7 V, delivers 17 dB mixer conversion gain at 45 MHz, provides 102 dB total IF/limiter gain, and supports RF input up to 150 MHz - enabling portable cellular radio FM IF receiver designs.

For engineers reviewing the SA606D/01,118 datasheet, SA606D/01,118 pinout, SA606D/01,118 application, or SA606D/01,118 equivalent, key selection criteria include its 90 dB RSSI dynamic range, 2.7–7.0 V supply range, SO20 package compatibility, and integrated op amp feedback access for level adjustment and filtering in battery-powered communication receivers.

Technical Context

The SA606D/01,118 implements a Gilbert cell mixer with on-chip oscillator capable of >150 MHz operation using crystal, LC, or external LO sources. Its IF signal path features two cascaded stages: a 43 dB-gain IF amplifier (5.5 MHz bandwidth) followed by a 60 dB-gain limiter (4.5 MHz bandwidth), optimized for 455 kHz ceramic or crystal filters with 1.5 kΩ impedance matching.

Quadrature detection uses an internal IF-driven Gilbert cell with AC-coupled external quadrature network; demodulated audio feeds a rail-to-rail op amp configurable for unity gain or second-order temperature-compensated filtering. The RSSI circuit delivers temperature-compensated logarithmic output over ≥90 dB range, meeting AMPS/TACS cellular specifications.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.7 V to 7.0 V - enables direct integration into single-cell Li-ion or 3.3 V/5 V systems without external regulation
Supply Current	3.5 mA typical at 3 V - supports ultra-low-power portable operation with <10.5 mW consumption
Mixer Conversion Gain	17 dB at 45 MHz - provides sufficient gain to drive 455 kHz ceramic filters directly without external amplification
IF/Limiter Total Gain	102 dB - achieves high sensitivity (0.31 µV for 12 dB SINAD) while maintaining stable limiting behavior
RSSI Dynamic Range	≥90 dB - enables accurate signal strength measurement across weak-to-strong RF conditions in cellular and cordless applications
RF Input Frequency	Up to 150 MHz - supports VHF band reception including 45 MHz IF, 88–108 MHz FM broadcast, and 136–174 MHz land mobile radio
Operating Temperature	−40 °C to +85 °C - qualified for industrial and automotive-adjacent portable equipment environments

Pinout & Package

SA606D/01,118 is housed in a plastic small outline package (SO20) per SOT163-1, with 20 leads and 7.5 mm body width. Pin assignments are identical to the SA606D/01 variant.

Pin/Terminal	Circuit Role	Design Meaning
1 RF_IN	RF input	Single-ended 8 kΩ input for mixer stage; accepts up to 150 MHz signals with 6.2 dB noise figure
2 RF_IN_DECOUPL	RF input decoupling	DC blocking and RF bypass node; requires local 100 nF capacitor to ground for optimal noise performance
3 OSC_OUT	Oscillator output	Drives external tank circuit; supports crystal, LC, or Butler oscillator configurations up to 150 MHz
4 OSC_IN	Oscillator input	Feedback path for on-chip oscillator; used with crystal or LC resonator to set local oscillator frequency
5 RSSI_OUT	RSSI output	Temperature-compensated logarithmic voltage output (0.3–2.5 V over 90 dB range); rail-to-rail capable
6 VCC	Positive supply	Primary power input; requires 10 µF tantalum + 0.1 µF ceramic decoupling per layout guidelines
7 AUDIO_FEEDBACK	Audio op amp feedback	Negative input for audio amplifier; allows external resistor network to set gain or add de-emphasis filtering
8 AUDIO_OUT	Audio amplifier output	Rail-to-rail output driving ≥5 kΩ AC loads; delivers 70–160 mV RMS at 1 kHz with C-message weighting
9 RSSI_FEEDBACK	RSSI op amp feedback	Negative input for RSSI amplifier; enables second-order temperature compensation or gain scaling
10 QUADRATURE_IN	Quadrature detector input	AC-coupled port for external 90° phase-shifted IF signal; completes quadrature demodulation path
11 LIMITER_OUT	Limiter amplifier output	Output of second-stage limiter; drives quadrature detector with 130 mV RMS signal into 0.3 kΩ load
12,13 LIMITER_DECOUPL	Limiter decoupling	Dual decoupling pins for limiter stage; each requires dedicated 100 nF capacitor to ground
14 LIMITER_IN	Limiter amplifier input	Input to 60 dB-gain limiter stage; matched to 1.5 kΩ for direct connection to ceramic filter outputs
15 GND	Ground	Negative supply reference; must be low-impedance plane with separate analog/digital grounding per RF layout best practices
16 IF_AMP_OUT	IF amplifier output	Output of first-stage 43 dB IF amplifier; drives limiter input with 1.5 kΩ source impedance
17,19 IF_AMP_DECOUPL	IF amplifier decoupling	Dual decoupling nodes for IF amplifier; require local 100 nF capacitors to minimize supply noise coupling
18 IF_AMP_IN	IF amplifier input	Input to 43 dB IF amplifier; 1.5 kΩ impedance matches standard 455 kHz ceramic filter outputs
20 MIXER_OUT	Mixer output	1.5 kΩ output resistance; directly interfaces with 455 kHz ceramic filters without matching networks

Key Features

Feature	Design Value
Low-power mixer/IF architecture	3.5 mA supply current at 3 V enables >100-hour battery life in handheld radios with minimal thermal dissipation
Integrated rail-to-rail op amps	Audio and RSSI op amps support full-supply swing output, eliminating need for level-shifting circuitry in 3.3 V systems
Configurable feedback paths	AUDIO_FEEDBACK and RSSI_FEEDBACK pins allow designer to implement gain control, de-emphasis, or temperature compensation externally
High-dynamic-range RSSI	90 dB logarithmic range with ±1.5 dB variation meets AMPS/TACS cellular telephone specification for signal strength reporting
Optimized 455 kHz interface	1.5 kΩ IF input/output impedances enable direct connection to Murata CFUKF455KB4X-R0 and similar 30 kHz bandwidth ceramic filters

Applications

Portable Cellular Radio FM IF	Cordless Phones
Use Scenario: Compact FM IF section in handheld cellular transceivers operating in 88–108 MHz broadcast or 136–174 MHz land mobile bands. IC Role / Device Role / Timing Role: Single-chip IF processor handling mixing, amplification, limiting, quadrature demodulation, and RSSI generation. Use Value: Reduces BOM count by integrating mixer, dual-limiting IF chain, detector, and op amps - cutting PCB area by >40% vs discrete solutions.	Use Scenario: DECT 1.88–1.90 GHz or 900 MHz cordless phone base station or handset IF processing. IC Role / Device Role / Timing Role: Second IF subsystem converting downconverted RF to baseband audio and RSSI signals. Use Value: Enables battery operation with 2.7 V minimum supply and 3.5 mA quiescent current, extending talk time in portable handsets.
RF Level Meter	Spectrum Analyzer Front-End
Use Scenario: Portable field strength meter measuring RF signal amplitude across VHF/UHF bands. IC Role / Device Role / Timing Role: Logarithmic RSSI generator with calibrated 90 dB dynamic range and ±1.5 dB accuracy. Use Value: Delivers calibrated signal strength readout without external ADC or calibration firmware - simplifying firmware design.	Use Scenario: Low-cost benchtop or handheld spectrum analyzer front-end for 1–150 MHz frequency coverage. IC Role / Device Role / Timing Role: High-linearity IF signal conditioning block providing gain, limiting, and quadrature detection for digital I/Q sampling. Use Value: Achieves −9 dBm input IP3 and 6.2 dB noise figure - supporting resolution bandwidths down to 30 kHz with minimal distortion.

Portable Cellular Radio FM IF

Cordless Phones

Use Scenario: Compact FM IF section in handheld cellular transceivers operating in 88–108 MHz broadcast or 136–174 MHz land mobile bands.

IC Role / Device Role / Timing Role: Single-chip IF processor handling mixing, amplification, limiting, quadrature demodulation, and RSSI generation.

Use Value: Reduces BOM count by integrating mixer, dual-limiting IF chain, detector, and op amps - cutting PCB area by >40% vs discrete solutions.

Use Scenario: DECT 1.88–1.90 GHz or 900 MHz cordless phone base station or handset IF processing.

IC Role / Device Role / Timing Role: Second IF subsystem converting downconverted RF to baseband audio and RSSI signals.

Use Value: Enables battery operation with 2.7 V minimum supply and 3.5 mA quiescent current, extending talk time in portable handsets.

RF Level Meter

Spectrum Analyzer Front-End

Use Scenario: Portable field strength meter measuring RF signal amplitude across VHF/UHF bands.

IC Role / Device Role / Timing Role: Logarithmic RSSI generator with calibrated 90 dB dynamic range and ±1.5 dB accuracy.

Use Value: Delivers calibrated signal strength readout without external ADC or calibration firmware - simplifying firmware design.

Use Scenario: Low-cost benchtop or handheld spectrum analyzer front-end for 1–150 MHz frequency coverage.

IC Role / Device Role / Timing Role: High-linearity IF signal conditioning block providing gain, limiting, and quadrature detection for digital I/Q sampling.

Use Value: Achieves −9 dBm input IP3 and 6.2 dB noise figure - supporting resolution bandwidths down to 30 kHz with minimal distortion.

Equivalent & Alternatives

The following parts are listed as comparable options for similar FM IF processing applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SA605D/01,118	RF mixer-only function; lacks IF amplifiers, limiter, quadrature detector, RSSI, and op amps - requires external IF chain components	Suitable only for first-conversion mixer applications where full IF processing is implemented discretely	Select SA605D/01,118 when designing multi-conversion architectures or requiring higher RF input frequency (>150 MHz) with custom IF filtering
MC3362P	Legacy bipolar FM IF IC with 4.5 V min supply, no rail-to-rail op amps, and narrower RSSI range (70 dB)	Compatible with legacy 5 V systems but incompatible with modern 3.3 V/low-power designs due to higher supply and current requirements	Choose MC3362P only for drop-in replacement in existing 5 V designs where redesign is not feasible

Compared with SA605D/01,118 and MC3362P, the SA606D/01,118 uniquely integrates complete FM IF signal chain - reducing component count, PCB area, and power supply complexity while enabling true single-supply 2.7 V operation and 90 dB RSSI accuracy.

Availability

SA606D/01,118 is available at Aetrix Electronics and suitable for portable cellular radio FM IF, cordless phones, and RF level meter applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.

Supply support for SA606D/01,118 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 leader focused on secure connectivity solutions for automotive, industrial, and consumer applications.

The SA606D/01,118 belongs to NXP's legacy RF receiver IC product line, designed specifically for high-performance, low-voltage portable FM communication systems requiring integrated IF processing and RSSI functionality.

FAQ

What is the minimum supply voltage required for reliable operation of the SA606D/01,118?

The SA606D/01,118 operates reliably down to 2.7 V, as specified in Table 6 of the datasheet. At this voltage, it maintains full functionality including mixer conversion gain, IF amplification, limiting, quadrature detection, and RSSI output - making it suitable for single-cell lithium-ion or alkaline battery-powered devices. Performance parameters such as noise figure and IP3 remain within datasheet limits at 2.7 V.

Does the SA606D/01,118 support external local oscillator injection instead of its internal oscillator?

Yes, the SA606D/01,118 supports external LO injection via the OSC_IN (pin 4) and OSC_OUT (pin 3) terminals. When using external LO, the internal oscillator is disabled, allowing operation beyond 150 MHz and improved phase noise performance. The datasheet confirms this capability under "Mixer/oscillator section" in Table 7, specifying test conditions with "external LO = 220 mV RMS value".

Can the audio and RSSI op amps in the SA606D/01,118 be configured for gain other than unity?

Yes, both the audio and RSSI op amps in the SA606D/01,118 can be configured for non-unity gain using external resistors connected to AUDIO_FEEDBACK (pin 7) and RSSI_FEEDBACK (pin 9). The datasheet states these terminals provide "access to the feedback path," enabling designers to add gain-setting networks or second-order temperature compensation circuits without modifying the core IC functionality.

What is the guaranteed RSSI output voltage range for the SA606D/01,118 across its full dynamic input range?

The SA606D/01,118 guarantees a ≥90 dB RSSI dynamic range with output voltage spanning 0.3 V to 2.5 V. Specifically, Table 7 lists Vo(RSSI) = 0.3–0.8 V at RF = −118 dBm and 1.2–2.5 V at RF = −23 dBm. This logarithmic response is temperature-compensated to ±1.5 dB variation, meeting AMPS/TACS cellular telephone specifications for signal strength reporting.

Is the SA606D/01,118 pin-compatible with the SSOP20-packaged SA606DK variants?

No, the SA606D/01,118 in SO20 (SOT163-1) is not pin-compatible with SA606DK variants in SSOP20 (SOT266-1), despite identical functional pin definitions. Figure 2 and Figure 3 in the datasheet show different physical pinouts: SO20 places RF_IN at pin 1 and GND at pin 15, while SSOP20 places RF_IN at pin 1 and GND at pin 16. Layout redesign and footprint change are required for substitution.

SA606D/01,118 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: SA606

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

RF Type:: Cellular, ASK, FSK, VHF

Frequency:: 150MHz

Number of Mixers:: 2

Gain:: 17dB

Noise Figure:: 6.2dB

Secondary Attributes:: Up Converter

Current - Supply:: 4.2mA

Voltage - Supply:: 2.7V ~ 7V

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SO

SA606D/01,118 FAQ

1.How can I place an order for SA606D/01,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA606D/01,118 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 SA606D/01,118 reliable?

The price and inventory of SA606D/01,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA606D/01,118 is usually 5 days.

3.What payment methods are accepted for SA606D/01,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA606D/01,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA606D/01,118?

SA606D/01,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA606D/01,118 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 SA606D/01,118?

For technical support, including SA606D/01,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA606D/01,118 requirements.

6.How does Aetrix verify that SA606D/01,118 is sourced from the original manufacturer or authorized distributors?

All SA606D/01,118 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 SA606D/01,118 meets industry standards.

7.What is the process for return or replacement of SA606D/01,118?

All SA606D/01,118 units undergo pre-shipment inspection (PSI). If there is an issue with SA606D/01,118, 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 SA606D/01,118 part is unused and in its original packaging.

Return procedure for SA606D/01,118:

1.Submit a request within 90 days.

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

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