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NXP Semiconductors SA615DK/01,112
- Part No.:
- SA615DK/01,112
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Mixers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SA615DK/01,112.pdf
- Description:
- IC MIXER 500MHZ UP CONVRT 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,349
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Product details
Overview
SA615DK/01,112 from NXP Semiconductors is a monolithic low-power FM IF system integrating mixer/oscillator, dual limiting IF amplifiers, quadrature detector, muting, temperature-compensated RSSI, and voltage regulator. It delivers 13 dB mixer conversion gain at 45 MHz, 25 MHz limiter bandwidth, and >90 dB RSSI dynamic range for cellular radio and high-performance communications receivers.
For engineers reviewing the SA615DK/01,112 datasheet, SA615DK/01,112 pinout, SA615DK/01,112 application, or SA615DK/01,112 equivalent, key selection criteria include RF input frequency up to 500 MHz, IF amplifier gain of 39.7 dB, RSSI output voltage range (0–5.8 V), and SSOP20 package compatibility with EIA AMPS/TACS specifications.
Technical Context
The SA615DK/01,112 implements a Gilbert-cell mixer with L/C or crystal oscillator supporting up to 150 MHz (crystal) or >1 GHz (L/C), paired with cascaded IF amplifiers delivering 102 dB total gain. Its quadrature detector uses internal IF and externally phase-shifted IF signals to enable FM demodulation without external phase-locked loops.
Temperature-compensated RSSI provides logarithmic output referenced to IF_AMP_OUT with ±2 dB variation over −40 °C to +85 °C, while dual audio outputs (muted/unmuted) support CMOS/TTL-compatible mute control with >60 dB attenuation. The device meets EIA AMPS and TACS cellular radio specifications under standard test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply current | 5.7 mA typical at 6 V - enables battery-powered portable radios with low quiescent power draw |
| Mixer input frequency | Up to 500 MHz - supports VHF/UHF front-end integration without external downconversion |
| Mixer conversion gain | 13 dB at 45 MHz - ensures sufficient signal level into ceramic IF filters (e.g., Murata SFG455A3) |
| Limiter small-signal bandwidth | 25 MHz - maintains fidelity for wideband FM signals and FSK/ASK data reception |
| RSSI dynamic range | >90 dB - enables precise RF level measurement across cellular signal strength variations |
| IF amplifier gain | 39.7 dB from 50 Ω source - matches standard 455 kHz ceramic filter impedance without external matching |
| AM rejection | 25–43 dB at 80% AM 1 kHz - suppresses amplitude interference in FM demodulation path |
Pinout & Package
SA615DK/01,112 is housed in a plastic shrink small outline package (SSOP20) with 20 leads, body width 4.4 mm (SOT266-1), optimized for high-density RF PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RF_IN | RF input | Single-ended 4.7 kΩ input impedance; accepts up to 500 MHz RF signals directly |
| 3 OSC_OUT | Oscillator output | Drives external crystal or L/C tank; supports Hartley/Colpitts up to 100 MHz, Butler up to 150 MHz |
| 7 RSSI_OUT | RSSI output | Analog voltage (0–5.8 V) proportional to IF signal level; temperature-compensated for stable log response |
| 8 MUTED_AUD_OUTP | Muted audio output | CMOS/TTL-compatible mute switch output; >60 dB attenuation when MUTE_INPUT is active |
| 11 LIMITER_OUT | Limiter amplifier output | Drives quadrature detector input; 1.5 kΩ output impedance matches standard IF filter termination |
| 15 GND | Ground | Negative supply reference; requires low-inductance connection to minimize RF coupling and noise |
| 16 IF_AMP_OUT | IF amplifier output | Internal 1.5 kΩ load enables direct connection to 455 kHz ceramic filters without matching network |
| 20 MIXER_OUT | Mixer output | Internally loaded with 1.5 kΩ resistor; interfaces directly with first-stage IF filter input |
Key Features
| Feature | Design Value |
|---|---|
| Low power consumption | 5.7 mA typical at 6 V - extends battery life in portable FM receivers and handheld scanners |
| High mixer input intercept point | −12 dBm IIP3 - improves strong-signal handling in congested RF environments |
| Temperature-compensated RSSI | ±2 dB RSSI variation over −40 °C to +85 °C - eliminates calibration drift in outdoor equipment |
| Dual audio outputs | Muted and unmuted pins with >60 dB mute attenuation - enables flexible audio routing and squelch control |
| ESD hardened | Qualified per industry standards - enhances reliability during board assembly and field operation |
Applications
| Cellular Radio FM IF | High-Performance Communications Receivers |
|---|---|
Use Scenario: Front-end IF processing in AMPS/TACS base stations and mobile handsets operating at 455 kHz IF. IC Role / Device Role / Timing Role: Integrates mixer, limiter, quadrature detector, and RSSI in single chip to replace discrete IF chain. Use Value: Reduces BOM count by >12 components and eliminates inter-stage matching networks required by legacy designs. |
Use Scenario: Wideband signal analysis in lab-grade spectrum analyzers and RF test equipment. IC Role / Device Role / Timing Role: Provides high-linearity IF amplification and logarithmic RSSI for accurate signal-level measurement. Use Value: Delivers >90 dB RSSI dynamic range and 25 MHz limiter bandwidth enabling precise RF power profiling. |
| Single Conversion VHF/UHF Receivers | SCA Receivers |
Use Scenario: Direct-conversion receiver architecture for land-mobile radio and amateur transceivers (136–174 MHz VHF). IC Role / Device Role / Timing Role: Performs RF-to-IF downconversion, limiting, and FM demodulation with integrated oscillator. Use Value: Mixer input supports up to 500 MHz, enabling single-conversion architectures without image-reject filtering. |
Use Scenario: Subsidiary Communications Authorization decoding in FM broadcast receivers. IC Role / Device Role / Timing Role: Extracts 67 kHz and 92 kHz SCA subcarriers via high-fidelity IF amplification and quadrature detection. Use Value: 39.7 dB IF gain and 62.5 dB limiter gain ensure clean SCA signal recovery even under weak RF conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FM IF system applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SA605DK/01,112 | Identical pinout and block diagram but lower ICC (4.5 mA typ), higher IIP3 (−10 dBm), and tighter RSSI error (±1.5 dB) | Better suited for ultra-low-power battery devices where 1.2 mA supply current reduction matters | Select SA605DK/01,112 when optimizing for lowest possible quiescent current without sacrificing RF linearity |
| SA615D/01,112 | Same electrical specs but SO20 package (7.5 mm body width) vs. SSOP20 (4.4 mm); higher thermal impedance (90 K/W vs. 117 K/W) | Preferred for through-hole prototyping or legacy SO20 footprints where board space is less constrained | Select SA615D/01,112 when leveraging existing SO20 layout or requiring lower junction-to-ambient thermal resistance |
Compared with SA605DK/01,112, the SA615DK/01,112 trades 1.2 mA higher supply current for improved RSSI temperature stability; compared with SA615D/01,112, it sacrifices 27 K/W thermal performance for 3.1 mm narrower board footprint-critical for compact handheld radios.
Availability
SA615DK/01,112 is available at Aetrix Electronics and suitable for cellular radio FM IF, high-performance communications receivers, single conversion VHF/UHF receivers, SCA receivers, and RF level meter applications requiring stable component supply and long-term industrial availability.
Supply support for SA615DK/01,112 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 IC design.
The SA615DK/01,112 belongs to NXP's legacy FM IF system product line, engineered specifically for high-sensitivity, low-power cellular and professional radio receivers requiring integrated mixer, limiter, and RSSI functionality.
FAQ
What is the maximum RF input frequency supported by SA615DK/01,112?
The SA615DK/01,112 supports RF input frequencies up to 500 MHz, as confirmed in its dynamic characteristics table under "fi input frequency" with a typical value of 500 MHz. This capability enables direct VHF/UHF signal processing without external pre-downconversion stages, making SA615DK/01,112 suitable for single-conversion receiver architectures in land-mobile radio and scanner applications.
Does SA615DK/01,112 require external IF filtering components?
No, SA615DK/01,112 is designed for direct interface with standard 455 kHz ceramic filters such as Murata SFG455A3 or CFUKF455KB4X. Its IF amplifier input and output impedances are both 1.5 kΩ, matching common ceramic filter terminations and eliminating the need for external impedance-matching networks in most implementations.
What is the RSSI output voltage range of SA615DK/01,112 and how is it calibrated?
The SA615DK/01,112 RSSI output ranges from 0 mV (at −118 dBm IF level) to 5.8 V (at −18 dBm IF level), with ±2 dB variation over temperature. Calibration is achieved via internal temperature compensation circuitry and requires no external trimming; the output voltage is linear-in-dB and referenced to the IF_AMP_OUT pin with R9 = 100 kΩ.
Can SA615DK/01,112 operate with a 4.5 V supply voltage?
Yes, SA615DK/01,112 operates across a supply range of 4.5 V to 8.0 V, with specified performance including RSSI output voltage (4.3 V at −27 dBm RF level) and unmuted audio level (450 mV RMS) tested at VCC = 4.5 V. This makes SA615DK/01,112 compatible with single-cell Li-ion and multi-cell alkaline battery systems.
How does the mute function work on SA615DK/01,112?
The mute function on SA615DK/01,112 is controlled by the MUTE_INPUT pin (Pin 5), which accepts CMOS/TTL logic levels. When activated, it attenuates the muted audio output (Pin 8) by >60 dB while leaving the unmuted audio output (Pin 9) unaffected. The mute switch threshold is 1.7 V (on) and 1.0 V (off), ensuring robust noise immunity in noisy RF environments.
SA615DK/01,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- SA615
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- RF Type:
- Cellular, ASK, FSK, UHF, VHF
- Frequency:
- 500MHz
- Number of Mixers:
- 3
- Gain:
- 13dB
- Noise Figure:
- 5dB
- Secondary Attributes:
- Up Converter
- Current - Supply:
- 7.4mA
- Voltage - Supply:
- 4.5V ~ 8V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
SA615DK/01,112 FAQ
1.How can I place an order for SA615DK/01,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA615DK/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 SA615DK/01,112 reliable?
The price and inventory of SA615DK/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 SA615DK/01,112 is usually 5 days.
3.What payment methods are accepted for SA615DK/01,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA615DK/01,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA615DK/01,112?
SA615DK/01,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA615DK/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 SA615DK/01,112?
For technical support, including SA615DK/01,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA615DK/01,112 requirements.
6.How does Aetrix verify that SA615DK/01,112 is sourced from the original manufacturer or authorized distributors?
All SA615DK/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 SA615DK/01,112 meets industry standards.
7.What is the process for return or replacement of SA615DK/01,112?
All SA615DK/01,112 units undergo pre-shipment inspection (PSI). If there is an issue with SA615DK/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 SA615DK/01,112 part is unused and in its original packaging.
Return procedure for SA615DK/01,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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