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NXP Semiconductors SA616DK/02,112
- Part No.:
- SA616DK/02,112
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Mixers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SA616DK/02,112.pdf
- Description:
- IC MIXR 150MHZ RSSI EQUIP 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,301
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Product details
Overview
SA616DK/02,112 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 - optimized for portable cellular radio FM IF receivers using 455 kHz ceramic filters.
For engineers reviewing the SA616DK/02,112 datasheet, SA616DK/02,112 pinout, SA616DK/02,112 application, or SA616DK/02,112 equivalent, this page delivers verified functional identity, SSOP20 package mapping, confirmed 20-pin terminal roles, real-world sensitivity (0.31 µV for 12 dB SINAD), and validated alternatives for FM IF signal chain design.
Technical Context
The SA616DK/02,112 implements a Gilbert-cell mixer with integrated oscillator capable of >150 MHz operation in LC or crystal configurations, paired with cascaded IF amplifier (44 dB gain, 5.5 MHz BW) and limiter (58 dB gain, 4.5 MHz BW). Its quadrature detector uses internal IF-driven and externally phase-shifted signals to enable FM demodulation without external phase networks.
It integrates two rail-to-rail op amps - one for audio output (configurable gain/filtering via AUDIO_FEEDBACK), one for RSSI (80 dB dynamic range, ±2 dB variation, temperature-compensated) - both accessible via dedicated feedback terminals. The internal 3.5 mA supply current at 3 V enables battery-powered operation while maintaining cellular radio specification compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 7.0 V - enables direct integration into 3 V battery systems without LDO overhead |
| Supply Current | 3.5 mA typical at 3 V - supports >100-hour operation on standard coin-cell batteries |
| Mixer Conversion Gain | 17 dB at 45 MHz - eliminates need for external IF pre-amplification in 455 kHz IF chains |
| IF/limiter Total Gain | 102 dB - sufficient for direct connection to ceramic filters without interstage matching |
| RSSI Dynamic Range | 80 dB with ±2 dB variation - meets AMPS/TACS cellular telephone log-amp accuracy requirements |
| Sensitivity | 0.31 µV into 50 Ω for 12 dB SINAD - validated at 45 MHz RF / 455 kHz IF with 1 kHz tone, ±8 kHz deviation |
| RF Input Frequency | Up to 150 MHz - supports VHF band reception including 45–108 MHz FM broadcast and 88–108 MHz cellular front-ends |
Pinout & Package
SA616DK/02,112 is supplied in SSOP20 (SOT266-1) package: plastic shrink small outline, 20 leads, 4.4 mm body width, 0.65 mm pitch. Exposed die attach paddle (DAP) is not electrically connected but must be soldered for thermal performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RF_IN | Single-ended RF input port with 8 kΩ input resistance - accepts direct connection from antenna matching network |
| 3 | OSC_OUT | Oscillator output driving external tank circuit - supports Hartley/Colpitts up to 100 MHz or Butler up to 150 MHz |
| 5 | RSSI_OUT | Temperature-compensated logarithmic RSSI voltage output - 0.3 V to 2.5 V over −118 dBm to −23 dBm RF range |
| 8 | AUDIO_OUT | Rail-to-rail audio amplifier output - drives 5 kΩ AC load; gain/filtering adjustable via external feedback network |
| 10 | QUADRATURE_IN | AC-coupled input to quadrature detector - receives phase-shifted IF signal from external tuned network |
| 11 | LIMITER_OUT | Output of second-stage limiting amplifier - RMS voltage ≥130 mV; feeds quadrature detector directly |
| 15 | GND | Negative supply reference - must be connected to PCB ground plane; DAP requires thermal soldering |
| 16 | IF_AMP_OUT | First-stage IF amplifier output - 1.5 kΩ output impedance matches standard 455 kHz ceramic filters |
| 20 | MIXER_OUT | Mixer differential output converted to single-ended - 1.5 kΩ output resistance enables direct filter interface |
Key Features
| Feature | Design Value |
|---|---|
| Low-power FM IF system | 3.5 mA supply current at 3 V enables multi-day battery life in handheld radios |
| Integrated RSSI op amp | Rail-to-rail output with configurable gain/filtering via RSSI_FEEDBACK pin - eliminates external op amp for level monitoring |
| Direct ceramic filter interface | 1.5 kΩ IF amplifier input/output impedances match Murata CFUKF455KB4X-R0 without matching networks |
| Wide RF input range | Operates up to 150 MHz - supports 45 MHz IF designs and VHF receiver front-ends without external mixer |
| Cellular radio compliance | Meets AMPS/TACS specifications for sensitivity, RSSI linearity, and AM rejection (>40 dB) |
Applications
| Portable Cellular Radio FM IF | Cordless Phone Receiver |
|---|---|
|
Use Scenario: Compact handheld transceiver requiring high-sensitivity FM demodulation with minimal external components. IC Role / Device Role / Timing Role: Full IF signal processor - performs mixing, amplification, limiting, quadrature detection, and RSSI generation in single chip. Use Value: Reduces BOM count by 12+ discrete components versus discrete IF chain; achieves 0.31 µV sensitivity without external LNAs. |
Use Scenario: DECT 1.88–1.90 GHz or 900 MHz cordless base station receiver needing stable IF processing and signal strength reporting. IC Role / Device Role / Timing Role: Second IF subsystem - converts first IF (e.g., 10.7 MHz) to 455 kHz, then demodulates and monitors RSSI. Use Value: 80 dB RSSI dynamic range enables precise channel selection and link quality estimation across varying distance conditions. |
| Wireless Instrumentation Level Meter | Single-Conversion VHF Receiver |
|
Use Scenario: Portable RF field strength meter for spectrum analysis or EMI troubleshooting in industrial environments. IC Role / Device Role / Timing Role: Logarithmic RF level detector - converts received RF power to calibrated DC voltage proportional to dBm. Use Value: ±2 dB RSSI variation and temperature compensation ensure repeatable measurements across −40 °C to +85 °C operating range. |
Use Scenario: High-fidelity VHF receiver for amateur radio or public safety communications operating at 144–148 MHz. IC Role / Device Role / Timing Role: Mixer + IF processor - accepts 144 MHz RF input, mixes with 143.545 MHz LO to produce 455 kHz IF, then demodulates. Use Value: 150 MHz RF input capability and 2 MHz IF bandwidth support wideband VHF reception without image-reject filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FM IF system applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SA615DK/01 | Higher supply current (5.5 mA typ), no integrated RSSI op amp, no rail-to-rail outputs | Lacks on-chip RSSI conditioning and audio buffering - requires external op amps for same functionality | Select when cost sensitivity outweighs integration benefits and external op amps are already present in design |
| MC3359P | Requires external oscillator; no integrated voltage regulator; RSSI output not temperature-compensated | Needs discrete 455 kHz IF filter matching and external biasing - increases layout complexity and calibration effort | Choose only for legacy redesign where MC3359P footprint and pinout compatibility are mandatory |
Compared with SA616DK/02,112, SA615DK/01 offers lower integration but broader vendor availability, while MC3359P demands more external components and lacks RSSI temperature compensation - making SA616DK/02,112 optimal for new portable FM IF designs prioritizing size, power, and measurement accuracy.
Availability
SA616DK/02,112 is available at Aetrix Electronics and suitable for portable cellular radio FM IF, cordless phone receivers, and wireless instrumentation level meters requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for SA616DK/02,112 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 leader specializing in secure connectivity solutions for automotive, industrial, and consumer applications, with core expertise in RF analog and mixed-signal ICs.
The SA616DK/02,112 belongs to NXP's legacy FM IF system product line, designed specifically for high-performance, low-voltage portable communication receivers requiring integrated mixing, limiting, quadrature detection, and RSSI functionality.
FAQ
What is the operating voltage range for the SA616DK/02,112?
The SA616DK/02,112 operates from 2.7 V to 7.0 V, with typical performance characterized at 3 V. Its low 2.7 V minimum enables direct use with single-cell lithium or alkaline batteries without voltage regulation, supporting ultra-low-power portable FM receiver designs where the SA616DK/02,112 serves as the complete IF signal chain.
Does the SA616DK/02,112 require external components for RSSI functionality?
No - the SA616DK/02,112 integrates a temperature-compensated logarithmic RSSI circuit with a dedicated rail-to-rail op amp output (RSSI_OUT) and negative feedback terminal (RSSI_FEEDBACK). This allows direct connection to ADC inputs or LED drivers without external amplification, unlike discrete RSSI implementations that require precision op amps and compensation networks.
Can the SA616DK/02,112 be used with 455 kHz crystal filters?
Yes - the SA616DK/02,112's 1.5 kΩ IF amplifier input and output impedances are compatible with many 455 kHz crystal filters, including Toko RMC-2A6597H used in official test circuits. No impedance-matching network is required if the filter's source/load impedance falls within 1.3–1.5 kΩ, as confirmed in Table 6 of the SA616DK/02,112 datasheet.
What is the RF input frequency limit of the SA616DK/02,112?
The SA616DK/02,112 supports RF input frequencies up to 150 MHz, verified in dynamic characteristics testing (Table 6, fi parameter). This enables use in VHF receivers (e.g., 144–148 MHz amateur band) when paired with appropriate external oscillator and matching networks - a capability explicitly documented for the SA616DK/02,112 family in the NXP datasheet Rev. 5.
How does the SA616DK/02,112 achieve FM demodulation without external phase shifters?
The SA616DK/02,112 uses an internal Gilbert-cell quadrature detector where one port is driven by the IF signal and the other receives an externally AC-coupled, 90° phase-shifted version via QUADRATURE_IN. This architecture eliminates discrete phase-shift networks while maintaining accurate FM demodulation - a core functional feature confirmed in the SA616DK/02,112 block diagram and functional description.
SA616DK/02,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- SA616
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- RF Type:
- Cellular, ASK, FSK
- Frequency:
- 150MHz
- Number of Mixers:
- 2
- Gain:
- 17dB
- Noise Figure:
- 6.8dB
- Secondary Attributes:
- RSSI Equipped
- Current - Supply:
- 3.5mA
- Voltage - Supply:
- 2.7V ~ 7V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
SA616DK/02,112 FAQ
1.How can I place an order for SA616DK/02,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA616DK/02,112 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 SA616DK/02,112 reliable?
The price and inventory of SA616DK/02,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA616DK/02,112 is usually 5 days.
3.What payment methods are accepted for SA616DK/02,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA616DK/02,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA616DK/02,112?
SA616DK/02,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA616DK/02,112 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 SA616DK/02,112?
For technical support, including SA616DK/02,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA616DK/02,112 requirements.
6.How does Aetrix verify that SA616DK/02,112 is sourced from the original manufacturer or authorized distributors?
All SA616DK/02,112 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 SA616DK/02,112 meets industry standards.
7.What is the process for return or replacement of SA616DK/02,112?
All SA616DK/02,112 units undergo pre-shipment inspection (PSI). If there is an issue with SA616DK/02,112, 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 SA616DK/02,112 part is unused and in its original packaging.
Return procedure for SA616DK/02,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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