My Inquiry
My Account
NXP Semiconductors SA616BS,115
- Part No.:
- SA616BS,115
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Mixers
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
SA616BS,115.pdf
- Description:
- IC MIXER FM IF SYSTEM LV 20HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,170
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA616BS,115 from NXP Semiconductors is a low-voltage high-performance monolithic FM IF system integrating mixer/oscillator, dual limiting IF amplifiers, quadrature detector, logarithmic RSSI, voltage regulator, and audio/RSSI op amps. It operates down to 2.7 V, delivers 17 dB mixer conversion gain at 45 MHz, 102 dB total IF/limiter gain, and 80 dB RSSI dynamic range - optimized for portable cellular radio FM IF receivers using 455 kHz ceramic filters.
For engineers reviewing the SA616BS,115 datasheet, SA616BS,115 pinout, SA616BS,115 application, or SA616BS,115 equivalent, this page provides verified functional context, HVQFN20 package mapping, real-world RF/IF performance boundaries (150 MHz mixer input, 2 MHz small-signal bandwidth), and validated alternative options for FM IF signal chain design.
Technical Context
The SA616BS,115 implements a Gilbert-cell mixer with integrated oscillator supporting up to 150 MHz RF input and crystal/LC/external LO configurations. Its IF path comprises two cascaded stages: a 43 dB gain IF amplifier (5.5 MHz bandwidth) followed by a 60 dB gain limiter (4.5 MHz bandwidth), delivering 90 dB total gain with 2 MHz small-signal bandwidth at 455 kHz center frequency.
Signal detection uses a Gilbert-cell quadrature detector with internal IF-driven port and AC-coupled external quadrature network. Both audio and RSSI outputs feature rail-to-rail op amps with accessible feedback terminals for gain adjustment and filtering - enabling direct interface to de-emphasis networks or ADC inputs without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 7.0 V - enables battery-powered operation in portable radios without LDO pre-regulation |
| Supply Current | 3.5 mA typical at 3 V - supports ultra-low-power handheld designs with extended battery life |
| Mixer Conversion Gain | 17 dB at 45 MHz - provides sufficient gain to drive 1.5 kΩ ceramic filters directly without interstage matching |
| RSSI Dynamic Range | 80 dB - delivers precise received signal strength measurement across cellular-grade sensitivity ranges |
| IF Small-Signal Bandwidth | 2 MHz - accommodates wideband FM demodulation (±8 kHz deviation) with minimal distortion |
| Noise Figure | 6.8 dB at 45 MHz - ensures high sensitivity (0.31 µV for 12 dB SINAD) in weak-signal environments |
| Input Third-Order Intercept | −9 dBm - maintains linearity in crowded RF bands with adjacent-channel interference |
Pinout & Package
HVQFN20 package: plastic thermal-enhanced very thin quad flat package, 4 × 4 × 0.85 mm body, 20 terminals, exposed die attach paddle (DAP) soldered to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OSC_OUT) | Oscillator output | Drives external LC tank or crystal network; supports Hartley/Colpitts/Butler topologies up to 150 MHz |
| 2 (OSC_IN) | Oscillator input | Accepts crystal or external LO signal; internal biasing enables direct crystal connection without external components |
| 3 (RSSI_OUT) | RSSI analog output | Rail-to-rail op amp output; 0.3–2.5 V range over −118 to −23 dBm RF input; requires external feedback for temperature compensation |
| 4 (VCC) | Positive supply | Primary power input; decoupling required at pin 15 (IF_AMP_DECOUPL) and pin 17 (IF_AMP_DECOUPL) for IF stability |
| 5 (AUDIO_FEEDBACK) | Audio op amp feedback | Negative input terminal - allows configurable gain (unity to >10×) and active filtering without external op amp |
| 6 (AUDIO_OUT) | Audio output | Rail-to-rail op amp output; drives 5 kΩ AC load directly; compatible with C-message/de-emphasis filter networks |
| 7 (RSSI_FEEDBACK) | RSSI op amp feedback | Negative input terminal - enables second-order temperature compensation and gain scaling of log output |
| 8 (QUADRATURE_IN) | Quadrature detector input | Receives phase-shifted IF signal from external tuned network; critical for accurate FM demodulation fidelity |
| 9 (LIMITER_OUT) | Limiter amplifier output | Drives quadrature detector; 130 mV RMS output ensures robust signal level into multiplier cell |
| 10,11 (LIMITER_DECOUPL) | Limiter decoupling | Dual bypass pins - mandatory 100 nF ceramic placement minimizes limiter oscillation and improves AM rejection |
| 12 (LIMITER_IN) | Limiter amplifier input | 1.5 kΩ input impedance - matches standard 455 kHz ceramic filter output impedance without matching network |
| 13 (GND) | Ground reference | Must connect to PCB ground plane; DAP (exposed pad) requires thermal vias and solder mask opening for thermal conduction |
| 14 (IF_AMP_OUT) | IF amplifier output | Drives limiter stage; 1.5 kΩ output impedance enables direct connection to limiter input |
| 15,17 (IF_AMP_DECOUPL) | IF amplifier decoupling | Dual bypass pins - critical for stable 43 dB IF gain; 100 nF ceramics required near each pin |
| 16 (IF_AMP_IN) | IF amplifier input | 1.5 kΩ input impedance - accepts output of 455 kHz ceramic filter (e.g., Murata CFUKF455KB4X-R0) without matching |
| 18 (MIXER_OUT) | Mixer output | 1.5 kΩ output resistance - directly interfaces with 455 kHz IF filter; no external termination needed |
| 19 (RF_IN) | RF input | Single-ended 8 kΩ input impedance; optimized for 50 Ω source with 14.5 dBV step-up for 45 MHz cellular band |
| 20 (RF_IN_DECOUPL) | RF input decoupling | Bypass pin for RF input stage; 100 nF capacitor placement essential for noise immunity and mixer stability |
Key Features
| Feature | Design Value |
|---|---|
| Low-power mixer/IF architecture | 3.5 mA at 3 V enables multi-day battery life in portable FM receivers without compromising sensitivity |
| Integrated rail-to-rail op amps | Eliminates need for external buffers - audio and RSSI outputs drive 5 kΩ loads directly with full swing |
| Temperature-compensated RSSI | ±2 dB RSSI variation over −40 °C to +85 °C ensures reliable signal strength reporting in outdoor devices |
| High IF/limiter gain distribution | 43 dB IF amp + 60 dB limiter = 102 dB total gain - achieves −105 dBm limiting sensitivity at IF_AMP_IN |
| Crystal oscillator support up to 150 MHz | Enables single-crystal solutions for VHF FM receivers (e.g., 44.545 MHz for 45 MHz IF) without external PLL |
| ESD robustness | 2000 V HBM / 1000 V CDM rating - withstands handling and board-level ESD events in consumer assembly lines |
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 subsystem - performs mixing, amplification, limiting, quadrature detection, and RSSI generation in one chip. Use Value: Reduces BOM count by eliminating discrete IF amps, detector diodes, and RSSI log converters - cuts PCB area by >40% vs. discrete solution. |
Use Scenario: DECT 6.0 cordless phone base station receiving 1.88–1.90 GHz RF via downconversion. IC Role / Device Role / Timing Role: Second IF processor - accepts 455 kHz IF from first mixer, delivers clean audio and signal-strength data to MCU. Use Value: 80 dB RSSI range enables adaptive receiver gain control; rail-to-rail audio output interfaces directly to codec ADC. |
| Wireless Instrumentation Level Meter | Single-Conversion VHF Receiver |
|
Use Scenario: Handheld RF field strength meter measuring 30–150 MHz signals with analog bar-graph display. IC Role / Device Role / Timing Role: Signal conditioning core - converts RF input to calibrated DC voltage proportional to signal level. Use Value: Logarithmic RSSI with ±2 dB accuracy eliminates need for microcontroller-based calibration tables - simplifies firmware. |
Use Scenario: Marine VHF receiver (156–174 MHz) using single-conversion architecture with 10.7 MHz or 455 kHz IF. IC Role / Device Role / Timing Role: IF processing engine - handles 455 kHz IF amplification, limiting, and FM demodulation with minimal external parts. Use Value: 2 MHz IF bandwidth supports wide-deviation FM voice; 17 dB mixer gain ensures sensitivity below 0.5 µV. |
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,118 | SSOP20 package only; no HVQFN option; 5.5 V max supply; 5.5 mA typical current at 3 V | Lacks integrated RSSI op amp - requires external op amp for RSSI output scaling | Select when legacy SSOP20 layout reuse is required and RSSI post-processing flexibility is preferred over integration. |
| NE612DR2G | SOIC-8; mixer+oscillator only; no IF amps, limiter, detector, or RSSI - requires full external IF chain | Not a drop-in replacement; needs discrete IF amplifiers, limiter, quadrature detector, and log amp | Choose only for cost-sensitive designs where board space is not constrained and full IF customization is needed. |
Compared with SA616BS,115, SA615DK,118 offers identical core IF functionality but lacks HVQFN packaging and integrated RSSI amplification, while NE612DR2G provides only mixer/oscillator capability - making SA616BS,115 the sole monolithic solution combining full FM IF processing, RSSI, and audio amplification in HVQFN20.
Availability
SA616BS,115 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 assurance, and thermal-enhanced packaging for compact handheld designs.
Supply support for SA616BS,115 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 SA616BS,115 belongs to NXP's legacy FM IF system product line, engineered specifically for portable, battery-operated communication receivers requiring high sensitivity, low power, and minimal external component count.
FAQ
What is the minimum operating voltage for SA616BS,115?
The SA616BS,115 operates down to 2.7 V, enabling direct use with single-cell Li-ion (3.0–4.2 V) or alkaline (3.0 V nominal) batteries without intermediate regulation. This low-voltage capability is confirmed in Table 5 (Static Characteristics) of the NXP datasheet Rev. 5, where VCC min is specified as 2.7 V at Tamb = 25 °C. Operation below 2.7 V risks degraded mixer gain and increased noise figure.
Does SA616BS,115 support external LO injection instead of crystal oscillator?
Yes, SA616BS,115 supports external LO injection via the OSC_IN (pin 2) and OSC_OUT (pin 1) terminals. Section 7 (Functional Description) states that "LC oscillator or external oscillator can be used at higher frequencies" beyond the 150 MHz crystal limit. The mixer section remains fully functional with external LO, preserving 17 dB conversion gain and 6.8 dB noise figure when driven with appropriate amplitude (220 mV RMS per Table 6).
How is the RSSI output calibrated across temperature for SA616BS,115?
The SA616BS,115 features temperature-compensated logarithmic RSSI with ±2 dB variation over −40 °C to +85 °C (Table 6, ΔαRSSI). Calibration is achieved internally via circuitry referenced to bandgap voltage; no external components are required for basic operation. For enhanced accuracy, the RSSI_FEEDBACK (pin 7) terminal allows connection of external resistors to implement second-order temperature compensation per Application Note AN10365 guidance.
Can SA616BS,115 drive a 455 kHz ceramic filter directly without impedance matching?
Yes, SA616BS,115 is designed for direct interface with standard 455 kHz ceramic filters such as Murata CFUKF455KB4X-R0. Its IF_AMP_IN (pin 16) and LIMITER_IN (pin 12) have 1.5 kΩ input impedance, and MIXER_OUT (pin 18) has 1.5 kΩ output resistance - matching typical 455 kHz filter impedances. Section 7 confirms "no impedance matching network is necessary" for most 455 kHz ceramic and crystal filters.
What is the thermal performance advantage of the HVQFN20 package in SA616BS,115?
The HVQFN20 package of SA616BS,115 delivers a transient thermal impedance (Zth(j-a)) of 40 K/W (Table 4), significantly lower than the 117 K/W of the SSOP20 variant. This 66% improvement enables higher sustained power dissipation in compact layouts - critical for portable radios where ambient temperature rises during extended receive duty cycles. The exposed DAP must be soldered to a thermally enhanced PCB pad with vias for optimal performance.
SA616BS,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- General Purpose
- Frequency:
- 150MHz
- Number of Mixers:
- 2
- Gain:
- 17dB
- Noise Figure:
- 6.8dB
- Secondary Attributes:
- With Amplifier
- Current - Supply:
- 3.5mA
- Voltage - Supply:
- 2.7V ~ 7V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HVQFN (4x4)
SA616BS,115 FAQ
1.How can I place an order for SA616BS,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA616BS,115 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 SA616BS,115 reliable?
The price and inventory of SA616BS,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA616BS,115 is usually 5 days.
3.What payment methods are accepted for SA616BS,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA616BS,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA616BS,115?
SA616BS,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA616BS,115 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 SA616BS,115?
For technical support, including SA616BS,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA616BS,115 requirements.
6.How does Aetrix verify that SA616BS,115 is sourced from the original manufacturer or authorized distributors?
All SA616BS,115 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 SA616BS,115 meets industry standards.
7.What is the process for return or replacement of SA616BS,115?
All SA616BS,115 units undergo pre-shipment inspection (PSI). If there is an issue with SA616BS,115, 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 SA616BS,115 part is unused and in its original packaging.
Return procedure for SA616BS,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA616BS,115 Tags
-
MAX2671EUT+T
Analog Devices Inc./Maxim Integrated
-
ADEX-10+
Mini-Circuits
-
ADE-2+
Mini-Circuits
-
ADE-1+
Mini-Circuits
-
LT5560EDD#PBF
Analog Devices Inc.
-
LT5560EDD#TRPBF
Analog Devices Inc.
-
LTC5562IUC#TRPBF
Analog Devices Inc.
-
MAX2681EUT+T
Analog Devices Inc./Maxim Integrated
-
ADE-1ASK+
Mini-Circuits
-
ADE-1L+
Mini-Circuits
-
ADL5350ACPZ-R7
Analog Devices Inc.
-
AD608ARZ-RL
Analog Devices Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
