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NXP Semiconductors SA616DK/03,118
- Part No.:
- SA616DK/03,118
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Mixers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SA616DK/03,118.pdf
- Description:
- IC MIXR 150MHZ RSSI EQUIP 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,829
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Product details
Overview
SA616DK/03,118 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 - optimized for portable cellular radio FM IF applications.
For engineers reviewing the SA616DK/03,118 datasheet, SA616DK/03,118 pinout, SA616DK/03,118 application, or SA616DK/03,118 equivalent, this page delivers verified technical context, SSOP20 package mapping, confirmed pin functions, real-world dynamic specs (e.g., 0.31 µV sensitivity, 80 dB RSSI range), and two validated alternative parts for FM IF signal chain design.
Technical Context
The SA616DK/03,118 implements a Gilbert-cell mixer with integrated oscillator capable of >150 MHz operation using crystal, LC, or external LO sources. Its IF signal path features cascaded 43 dB IF amplifier and 60 dB limiter stages, both with 1.5 kΩ input impedance - enabling direct interface to standard 455 kHz ceramic or crystal filters without matching networks.
Quadrature detection uses internal IF-driven and externally phase-shifted signals to drive a Gilbert-cell multiplier, feeding a configurable rail-to-rail audio op amp. The logarithmic RSSI circuit delivers temperature-compensated output over 80 dB dynamic range, with dedicated feedback terminals (RSSI_FEEDBACK, AUDIO_FEEDBACK) allowing gain adjustment and second-order compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.7 V to 7.0 V - enables battery-powered portable designs with headroom for aging or ripple. |
| Supply current | 3.5 mA typical at 3 V - ultra-low power consumption critical for handheld radios and cordless phones. |
| Mixer conversion gain | 17 dB at 45 MHz - high gain reduces need for external pre-amplification in receiver front-ends. |
| RSSI dynamic range | 80 dB with ±2 dB variation - supports accurate signal strength measurement across weak to strong RF inputs. |
| IF/limiter small-signal bandwidth | 2 MHz - sufficient for wideband FM demodulation (±75 kHz deviation) and FSK/ASK data recovery. |
| Sensitivity | 0.31 µV into 50 Ω for 12 dB SINAD - meets cellular radio specifications with 455 kHz IF and 45 MHz RF input. |
| Noise figure | 6.8 dB at 45 MHz - low noise preserves SNR in weak-signal reception scenarios. |
Pinout & Package
SA616DK/03,118 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 terminal; 8 kΩ input resistance, 3–4 pF capacitance - accepts up to 150 MHz signals directly. |
| 3 | OSC_OUT | Oscillator output driving external tank or crystal; supports Hartley/Colpitts up to 100 MHz, Butler up to 150 MHz. |
| 5 | RSSI_OUT | Temperature-compensated logarithmic RSSI voltage output; 0.3–2.5 V range across −118 to −23 dBm RF input. |
| 6 | VCC | Positive supply pin; requires 10–15 µF tantalum + 0.1 µF ceramic bypass near pin for stable 2.7–7 V operation. |
| 7 | AUDIO_FEEDBACK | Negative feedback terminal for internal audio op amp - enables gain setting, filtering, or de-emphasis network insertion. |
| 10 | QUADRATURE_IN | AC-coupled input to quadrature detector's external phase-shift network - critical for FM demodulation linearity. |
| 15 | GND | Ground reference for analog/RF sections; must connect to system ground plane; DAP soldering enhances thermal dissipation. |
| 20 | MIXER_OUT | Mixer output with 1.25–1.5 kΩ resistance - directly drives 455 kHz ceramic filters without impedance matching. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail op amps | Both audio and RSSI outputs support full 0 V to VCC swing - simplifies AC coupling and load driving down to 5 kΩ. |
| Low external component count | Supports crystal, ceramic, or LC filters directly - eliminates discrete matching networks for 455 kHz IF stages. |
| ESD robustness | Exceeds 2000 V HBM and 1000 V CDM - ensures reliability during handling and in-field operation. |
| Temperature-compensated RSSI | 80 dB dynamic range with ±2 dB variation over −40 °C to +85 °C - enables stable signal strength reporting in varying environments. |
| High IF/limiter gain | 102 dB total gain with 2 MHz bandwidth - achieves high sensitivity while maintaining FM fidelity and distortion performance. |
Applications
| Portable Cellular Radio FM IF | Cordless Phone Receiver |
|---|---|
Use Scenario: Compact handheld transceiver requiring FM demodulation at 455 kHz IF with battery operation. IC Role / Device Role / Timing Role: Full IF signal processor - performs mixing, limiting, quadrature detection, audio amplification, and RSSI generation in one IC. Use Value: Eliminates 12+ discrete components; enables 2.7 V operation with 0.31 µV sensitivity meeting AMPS/TACS cellular specs. |
Use Scenario: DECT 1.8 GHz or 2.4 GHz cordless base station or handset receiving FM-modulated voice. IC Role / Device Role / Timing Role: Second IF subsystem processing downconverted 455 kHz signal after first mixer stage. Use Value: 2 MHz IF bandwidth supports wideband voice; rail-to-rail audio op amp drives speaker or codec directly. |
| RF Level Meter | FSK/ASK Data Receiver |
Use Scenario: Portable field instrument measuring RF signal strength across VHF/UHF bands. IC Role / Device Role / Timing Role: Logarithmic RSSI subsystem with calibrated 80 dB range and ±2 dB accuracy. Use Value: On-chip temperature compensation removes need for external calibration; RSSI_FEEDBACK allows scaling to meter display range. |
Use Scenario: Low-power wireless sensor node receiving OOK or FSK-modulated telemetry data. IC Role / Device Role / Timing Role: IF amplifier/limiter and quadrature detector providing clean baseband output for digital decoding. Use Value: 2 MHz bandwidth accommodates data rates up to ~1 Mbps; low 3.5 mA current extends battery life. |
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 | Lower integration: no internal RSSI, audio op amp, or voltage regulator; requires external limiter and detector. | Used in cost-sensitive, fixed-gain receivers where RSSI and audio buffering are handled externally. | Select when board space and BOM count are less critical than absolute lowest unit cost and legacy design reuse. |
| MC3359P | Higher supply voltage (4.5–8 V), no rail-to-rail outputs, no integrated RSSI op amp; 10.7 MHz IF centered. | Designed for 10.7 MHz IF architectures in consumer radios; lacks 455 kHz optimization and low-voltage capability. | Choose only for migration from existing 10.7 MHz designs; not suitable for 455 kHz portable systems operating below 3 V. |
Compared with SA616DK/03,118, SA615DK/01 requires external RSSI and audio conditioning circuits, increasing layout complexity and power use, while MC3359P mandates higher supply voltage and cannot replace SA616DK/03,118 in 455 kHz, low-voltage portable applications.
Availability
SA616DK/03,118 is available at Aetrix Electronics and suitable for portable cellular radio FM IF, cordless phone receivers, and RF level meter applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for SA616DK/03,118 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, with deep expertise in RF and mixed-signal IC design.
The SA616DK/03,118 belongs to NXP's legacy FM IF system product line, engineered specifically for high-performance, low-voltage portable communication receivers - emphasizing integration, sensitivity, and RSSI accuracy in compact form factors.
FAQ
What is the minimum supply voltage required for SA616DK/03,118 to operate correctly?
The SA616DK/03,118 is specified to function down to 2.7 V, with typical supply current of 3.5 mA at that voltage. Operation below 2.7 V is not guaranteed per datasheet limits, and parameters such as mixer gain, RSSI accuracy, and IF bandwidth may degrade. For reliable performance in battery-powered devices, maintain VCC ≥ 2.7 V with adequate decoupling.
Does SA616DK/03,118 support 455 kHz IF filters without external impedance matching?
Yes. SA616DK/03,118 features 1.5 kΩ IF amplifier and limiter input impedances, matched to standard 455 kHz ceramic filters (e.g., Murata CFUKF455KB4X-R0). Its MIXER_OUT pin has 1.25–1.5 kΩ output resistance, enabling direct connection - no external matching network is needed for typical 455 kHz filter implementations.
How is the RSSI output of SA616DK/03,118 calibrated and what is its usable range?
The SA616DK/03,118 RSSI output is temperature-compensated and delivers 0.3 V at −118 dBm RF input to 2.5 V at −23 dBm - covering an 80 dB dynamic range with ±2 dB variation over −40 °C to +85 °C. The RSSI_FEEDBACK pin allows external resistor networks to scale or offset the output for specific ADC or display requirements.
Can SA616DK/03,118 be used with a 10.7 MHz IF instead of 455 kHz?
No. SA616DK/03,118 is optimized for 455 kHz IF operation, with gain/bandwidth distribution, limiter characteristics, and quadrature network design tailored to that frequency. While the mixer accepts RF up to 150 MHz, the IF amplifier/limiter bandwidth (2 MHz) and internal detector timing are not validated for 10.7 MHz - use MC3359P or SA606 for 10.7 MHz IF systems.
What package type is used for SA616DK/03,118 and are thermal vias required?
SA616DK/03,118 uses the SSOP20 (SOT266-1) package: 20-pin, 4.4 mm body width, 0.65 mm pitch. It includes an exposed die attach paddle (DAP) that is not electrically connected but must be soldered to a thermal pad on the PCB. Incorporating thermal vias under the DAP is strongly recommended to achieve the rated 117 K/W junction-to-ambient thermal impedance.
SA616DK/03,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- Cellular
- 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/03,118 FAQ
1.How can I place an order for SA616DK/03,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA616DK/03,118 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 SA616DK/03,118 reliable?
The price and inventory of SA616DK/03,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA616DK/03,118 is usually 5 days.
3.What payment methods are accepted for SA616DK/03,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA616DK/03,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA616DK/03,118?
SA616DK/03,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA616DK/03,118 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 SA616DK/03,118?
For technical support, including SA616DK/03,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA616DK/03,118 requirements.
6.How does Aetrix verify that SA616DK/03,118 is sourced from the original manufacturer or authorized distributors?
All SA616DK/03,118 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 SA616DK/03,118 meets industry standards.
7.What is the process for return or replacement of SA616DK/03,118?
All SA616DK/03,118 units undergo pre-shipment inspection (PSI). If there is an issue with SA616DK/03,118, 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 SA616DK/03,118 part is unused and in its original packaging.
Return procedure for SA616DK/03,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA616DK/03,118 Tags
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