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NXP Semiconductors SA616DK/01,112
- Part No.:
- SA616DK/01,112
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Mixers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SA616DK/01,112.pdf
- Description:
- IC MIXR 150MHZ RSSI EQUIP 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,153
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Product details
Overview
SA616DK/01 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 reception.
For engineers reviewing the SA616DK/01 datasheet, SA616DK/01 pinout, SA616DK/01 application, or SA616DK/01 equivalent, this page delivers verified functional context, SSOP20 package mapping, confirmed RSSI dynamic range (80 dB), mixer noise figure (6.8 dB), and real-world design implications for battery-powered FM receiver front-ends.
Technical Context
The SA616DK/01 implements a two-stage IF architecture: first-stage IF amplifier (44 dB gain, 5.5 MHz bandwidth) feeds a second-stage limiter (58 dB gain, 4.5 MHz bandwidth), optimized for 455 kHz ceramic filters with 1.5 kΩ input/output impedance. Its Gilbert-cell mixer features 8 kΩ RF input resistance and 1.5 kΩ output resistance, enabling direct connection to 455 kHz filters without matching networks.
Internal rail-to-rail op amps drive audio and RSSI outputs with configurable feedback paths for gain adjustment or filtering; the RSSI circuit delivers temperature-compensated logarithmic response across 80 dB dynamic range, meeting AMPS/TACS cellular specifications. The oscillator supports crystal (≤150 MHz), LC, or external LO configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 7.0 V - enables single-cell Li-ion or dual-cell alkaline operation in portable radios. |
| Supply Current | 3.5 mA typical at 3 V - supports >100-hour battery life in low-duty-cycle handheld receivers. |
| Mixer Conversion Gain | 17 dB at 45 MHz - ensures sufficient signal level after RF-to-IF translation for robust demodulation. |
| RSSI Dynamic Range | 80 dB with ±2 dB variation - provides accurate received signal strength measurement across weak to strong signals. |
| IF Amplifier Gain | 44 dB - establishes high sensitivity while maintaining stability in cascaded limiting stages. |
| Noise Figure | 6.8 dB at 45 MHz - directly determines minimum detectable signal level in FM front-end design. |
| RF Input Frequency | Up to 150 MHz - supports VHF FM band (88–108 MHz) and extended applications like wireless microphones. |
Pinout & Package
SA616DK/01 uses the 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 enhances thermal performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RF_IN | Single-ended RF input terminal; 8 kΩ input resistance enables direct antenna coupling or filter interface. |
| 3 | OSC_OUT | Oscillator output driving external tank circuit; supports crystal, LC, or buffered external LO. |
| 5 | RSSI_OUT | Temperature-compensated logarithmic RSSI voltage output; requires external feedback resistor for scaling. |
| 8 | AUDIO_OUT | Rail-to-rail audio amplifier output; drives 5 kΩ AC loads with de-emphasis filtering capability. |
| 10 | QUADRATURE_IN | Input to quadrature detector; accepts phase-shifted IF signal for FM demodulation. |
| 15 | GND | Primary ground reference; must be connected to PCB ground plane for stable bias and noise control. |
| 16 | IF_AMP_OUT | Output of first IF amplifier stage; connects directly to ceramic filter or limiter input. |
| 20 | MIXER_OUT | Mixer differential output converted to single-ended; 1.5 kΩ output resistance matches 455 kHz filters. |
Key Features
| Feature | Design Value |
|---|---|
| Low-power mixer core | 3.5 mA supply current at 3 V enables multi-day battery operation in handheld radios. |
| Integrated RSSI op amp | Rail-to-rail output with configurable feedback allows precise 0.3–2.5 V RSSI scaling across 80 dB range. |
| Direct-filter interface | 1.5 kΩ IF input/output impedances eliminate external matching components for standard 455 kHz ceramic filters. |
| Wide RF input range | Supports 150 MHz RF input - covers full VHF FM broadcast band and extends to cordless phone ISM bands. |
| ESD robustness | 2000 V HBM / 1000 V CDM rating ensures reliability during board assembly and field handling. |
Applications
| Portable Cellular Radio FM IF | Cordless Phone Receiver |
|---|---|
Use Scenario: Compact handheld transceiver requiring FM demodulation at 455 kHz IF with battery-constrained power budget. IC Role / Device Role / Timing Role: Full IF signal chain - mixer, IF amplification, limiting, quadrature detection, and RSSI generation - all in one IC. Use Value: Reduces BOM count by eliminating discrete IF transformers, limiters, and log amps while maintaining 0.31 µV sensitivity. |
Use Scenario: 900 MHz DECT or 2.4 GHz cordless base station receiver needing stable FM/FSK demodulation. IC Role / Device Role / Timing Role: Second IF processor accepting 455 kHz input from first mixer stage; provides audio output and RSSI for link quality monitoring. Use Value: Enables RSSI-based channel selection and automatic gain control via programmable op amp feedback networks. |
| RF Level Meter | Single-Conversion VHF Receiver |
Use Scenario: Handheld field strength meter measuring FM broadcast or two-way radio signal levels. IC Role / Device Role / Timing Role: Logarithmic RSSI generator with calibrated 80 dB dynamic range and ±2 dB accuracy. Use Value: Delivers repeatable RF level readings without external ADC or calibration firmware - analog output directly interfaces to meter display. |
Use Scenario: High-selectivity VHF receiver for amateur radio or public safety systems using 455 kHz IF filtering. IC Role / Device Role / Timing Role: Complete IF subsystem including 2 MHz small-signal bandwidth limiter and quadrature detector for low-distortion FM recovery. Use Value: Achieves 17 dB SINAD at −110 dBm IF input, supporting weak-signal reception in noisy RF environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FM IF processing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SA616BS | HVQFN20 package (4 × 4 × 0.85 mm); lower thermal impedance (40 K/W vs. 117 K/W); identical electrical specs. | Better thermal performance in space-constrained, high-density layouts; requires reflow-only assembly. | Select SA616BS when PCB area is limited and thermal management is critical; SSOP20 remains preferred for wave-solder compatibility. |
| SA606DK | Lower IF gain (70 dB vs. 102 dB); no internal RSSI op amp; 5 V minimum supply; lacks rail-to-rail outputs. | Suitable only for fixed-supply, non-battery designs where RSSI is externally processed. | Choose SA616DK/01 over SA606DK when operating below 3 V, requiring integrated RSSI scaling, or needing rail-to-rail audio drive capability. |
Compared with SA616BS, SA616DK/01 offers easier hand-soldering and wave-solder compatibility but higher thermal resistance; versus SA606DK, it delivers superior low-voltage operation, integrated RSSI conditioning, and wider dynamic range - making it the only choice for modern portable FM receivers demanding 2.7 V operation and analog RSSI output.
Availability
SA616DK/01 is available at Aetrix Electronics and suitable for portable cellular radio FM IF, cordless phone receivers, and RF level meters requiring stable component supply across industrial temperature ranges (−40 °C to +85 °C).
Supply support for SA616DK/01 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.
The SA616DK/01 belongs to NXP's legacy RF receiver IC portfolio, designed specifically for high-performance, low-power FM IF signal processing in portable communication devices - emphasizing integration, battery efficiency, and analog signal fidelity.
FAQ
What is the minimum supply voltage required for SA616DK/01 to operate correctly?
The SA616DK/01 functions correctly down to 2.7 V, as specified in its static characteristics table. Below this threshold, mixer conversion gain drops significantly, RSSI linearity degrades, and audio output amplitude falls outside guaranteed limits. Operation at 2.7 V is validated across the full −40 °C to +85 °C ambient range, making SA616DK/01 suitable for single-cell lithium polymer or alkaline battery systems.
Does SA616DK/01 support external oscillator injection, or is it limited to crystal/LC oscillators?
The SA616DK/01 supports external oscillator injection via the OSC_IN pin (Pin 4), allowing use of a buffered external LO signal instead of the internal oscillator. This mode bypasses the on-chip oscillator transistor and enables higher-frequency operation beyond 150 MHz. The datasheet confirms external LO use in the mixer/oscillator section under dynamic characteristics, with test conditions specifying "external LO = 220 mV RMS value" for key parameters like IP3I and NF.
How is the RSSI output of SA616DK/01 calibrated, and what is its voltage range?
The SA616DK/01 RSSI output delivers a temperature-compensated logarithmic voltage ranging from 0.3 V at −118 dBm RF input to 2.5 V at −23 dBm RF input - covering an 80 dB dynamic range with ±2 dB variation. Calibration is factory-trimmed; no user adjustment is needed. The RSSI_FEEDBACK pin (Pin 9) allows external resistor networks to scale or offset the output, enabling direct interface to ADCs or analog meters without additional op amps.
Can SA616DK/01 drive a 50 Ω load directly at the AUDIO_OUT pin?
No, SA616DK/01 AUDIO_OUT (Pin 8) is rated for minimum 5 kΩ AC loads per the datasheet's Vo(aud) specification. Driving a 50 Ω load would overload the internal rail-to-rail op amp, causing distortion, reduced output swing, and potential thermal stress. For 50 Ω interfacing, an external buffer amplifier or transformer is required. The SA616DK/01 design assumes connection to high-impedance audio stages or de-emphasis filters, not transmission lines.
What is the purpose of the two LIMITER_DECOUPL pins (Pins 12 and 13) on SA616DK/01?
Pins 12 and 13 on SA616DK/01 are both labeled LIMITER_DECOUPL and serve as dedicated decoupling terminals for the limiter amplifier stage. Each connects to a separate internal limiter section - one for the first limiter, one for the second - and must be bypassed to ground with 100 nF ceramic capacitors. This dual-decoupling structure isolates high-gain limiter stages from supply noise, preventing oscillation and ensuring stable limiting behavior across the 2 MHz small-signal bandwidth.
SA616DK/01,112 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/01,112 FAQ
1.How can I place an order for SA616DK/01,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA616DK/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 SA616DK/01,112 reliable?
The price and inventory of SA616DK/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 SA616DK/01,112 is usually 5 days.
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SA616DK/01,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA616DK/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 SA616DK/01,112?
For technical support, including SA616DK/01,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA616DK/01,112 requirements.
6.How does Aetrix verify that SA616DK/01,112 is sourced from the original manufacturer or authorized distributors?
All SA616DK/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 SA616DK/01,112 meets industry standards.
7.What is the process for return or replacement of SA616DK/01,112?
All SA616DK/01,112 units undergo pre-shipment inspection (PSI). If there is an issue with SA616DK/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 SA616DK/01,112 part is unused and in its original packaging.
Return procedure for SA616DK/01,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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