My Inquiry
My Account
NXP Semiconductors SA636BS,115
- Part No.:
- SA636BS,115
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Mixers
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
SA636BS,115.pdf
- Description:
- IC MIXER 500MHZ UP CONV 20HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,336
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA636BS,115 from NXP Semiconductors is a low-voltage high-performance FM IF system IC integrating mixer/oscillator, dual limiting IF amplifiers, quadrature detector, temperature-compensated logarithmic RSSI (90 dB dynamic range), wideband data output (≥600 kHz), and CMOS/TTL-compatible power-down control. It operates down to 2.7 V and targets portable high-bandwidth communications receivers such as DECT and digital cordless telephones.
For engineers reviewing the SA636BS,115 datasheet, SA636BS,115 pinout, SA636BS,115 application, or SA636BS,115 equivalent, key selection criteria include its HVQFN20 thermal-enhanced package, 12 dB SINAD sensitivity (0.54 µV @ 240 MHz), mixer conversion gain (11 dB), noise figure (12 dB), and RSSI feedback pin for external gain/filter adjustment.
Technical Context
The SA636BS,115 implements a single-conversion FM IF architecture with internal Gilbert cell mixer and oscillator supporting RF input up to 500 MHz and LO injection up to 1 GHz. Its IF chain delivers 92 dB total gain across two stages optimized for 10.7 MHz, 330 Ω source impedance - enabling direct connection to ceramic filters without matching networks.
It integrates rail-to-rail RSSI op amps with feedback access, fast RSSI rise/fall times (1.1–1.2 µs / 2.0–7.3 µs), and a dedicated POWER_DOWN_CTRL pin that reduces supply current to 200 µA. The HVQFN20 package features an exposed die attach paddle (DAP) requiring PCB ground connection for thermal and electrical performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.7 V to 5.5 V - enables battery-powered operation in portable devices |
| Supply current (active) | 6.5 mA typical at 3 V - low power consumption critical for handheld applications |
| Mixer conversion gain | 11 dB at 240 MHz - improves weak-signal detection without external amplification |
| Noise figure | 12 dB at 240 MHz - supports high sensitivity (0.54 µV for 12 dB SINAD) |
| RSSI dynamic range | >90 dB - provides precise signal strength measurement across wide input levels |
| Data output bandwidth | ≥600 kHz - sufficient for DECT and FSK/ASK wideband data demodulation |
| Power-down current | 200 µA - extends battery life during idle periods |
Pinout & Package
HVQFN20 (SOT917-1): 4 × 4 × 0.85 mm thermally enhanced quad flat package with exposed die attach paddle (DAP) requiring solder connection to PCB ground plane for optimal thermal dissipation and RF stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF_IN (19) | RF input terminal | Single-ended 700 Ω input for mixer stage; DC bias ~1.07 V |
| OSC_IN (2) | Oscillator input (base) | Accepts crystal or LC tank for local oscillator up to 150 MHz (crystal) or 1 GHz (LC) |
| VCC (3) | Positive supply | 2.7–5.5 V supply; requires 0.1 µF bypass capacitor per layout guidelines |
| RSSI_FEEDBACK (4) | RSSI op amp negative input | Enables external gain setting or filtering via resistor/capacitor network |
| RSSI_OUT (5) | RSSI voltage output | Rail-to-rail op amp output; 0.2–1.8 V range over −118 dBm to −10 dBm IF level |
| POWER_DOWN_CTRL (6) | Power-down enable | CMOS/TTL-compatible active-HIGH control; pulls ICC to 200 µA when LOW |
| DATA_OUT (7) | Demodulated data output | FM quadrature detector output; ≥600 kHz bandwidth for wideband data recovery |
| QUADRATURE_IN (8) | Quadrature detector input | AC-coupled port for external 90° phase-shifted IF signal in precision demodulation |
| LIMITER_IN (12) | Limiter amplifier input | 330 Ω input impedance matches standard 10.7 MHz ceramic filters directly |
| GND (13) | Ground reference | Must connect exposed DAP to this pin and PCB ground plane for thermal/electrical integrity |
Key Features
| Feature | Design Value |
|---|---|
| Wideband data output | ≥600 kHz minimum bandwidth supports DECT and high-rate FSK/ASK demodulation |
| Temperature-compensated RSSI | 90+ dB dynamic range with ±1.5 dB variation ensures stable signal strength reporting across −40°C to +85°C |
| Low-power mixer architecture | 11 dB conversion gain and 12 dB noise figure at 240 MHz enable high sensitivity in compact receivers |
| Direct filter interface | 330 Ω IF/limiter input/output impedances allow direct connection to 10.7 MHz ceramic filters without matching networks |
| Thermally optimized HVQFN20 | 40 K/W junction-to-ambient thermal impedance enables reliable operation in space-constrained portable designs |
Applications
| DECT Receivers | Digital Cordless Telephones |
|---|---|
Use Scenario: 110.592 MHz RF reception with 9.8 MHz IF in European cordless telephone base stations and handsets. IC Role / Device Role / Timing Role: Single-conversion FM IF processor handling mixing, limiting, quadrature detection, and RSSI generation. Use Value: Enables 700 kHz data bandwidth and 12 dB SINAD sensitivity while maintaining low 6.5 mA active current draw. | Use Scenario: Portable 2.4 GHz or 5.8 GHz digital cordless phone receivers requiring high linearity and interference rejection. IC Role / Device Role / Timing Role: Integrated IF subsystem providing mixer, limiter chain, and demodulated audio/data outputs. Use Value: 92 dB IF/limiter gain and 40 dB AM rejection ensure clear voice transmission in noisy RF environments. |
| FSK/ASK Data Receivers | Portable Communications Receivers |
Use Scenario: Wireless sensor networks and telemetry systems using narrowband FSK or ASK modulation schemes. IC Role / Device Role / Timing Role: Wideband data demodulator with rail-to-rail DATA_OUT and configurable RSSI feedback path. Use Value: ≥600 kHz data output bandwidth and fast RSSI response (1.1 µs rise) support real-time packet decoding. | Use Scenario: Handheld spectrum analyzers, amateur radio receivers, and field test equipment needing compact, high-performance IF processing. IC Role / Device Role / Timing Role: Complete FM IF front-end with integrated oscillator, limiting amplifiers, and quadrature detector. Use Value: Mixer input to >500 MHz and 1 GHz LO capability allows flexible frequency planning in VHF/UHF bands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FM IF processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SA636DK/01,118 | SSOP20 package (SOT266-1); identical electrical specs except RSSI output voltage screening not applied | Same functional role but larger footprint and higher thermal resistance (117 K/W vs. 40 K/W) | Select SA636DK/01,118 only if SSOP20 PCB layout or thermal constraints permit |
| SA636DK/02J | SSOP20 package; RSSI output voltage screened to 0.15–0.45 V at −118 dBm IF level | Better suited for applications requiring tighter RSSI calibration at low signal levels | Choose SA636DK/02J when RSSI accuracy below −100 dBm is critical and SSOP20 is acceptable |
Compared with SA636DK/01,118 and SA636DK/02J, the SA636BS,115 offers superior thermal performance (40 K/W), smaller 4×4 mm footprint, and un-screened RSSI output - making it optimal for space- and power-constrained portable FM receivers where board area and heat dissipation are primary concerns.
Availability
SA636BS,115 is available at Aetrix Electronics and suitable for DECT receivers, digital cordless telephones, and portable high-performance communications receivers requiring stable component supply, extended temperature operation (−40°C to +85°C), and consistent HVQFN20 packaging.
Supply support for SA636BS,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, founded by Philips, is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and consumer applications.
The SA636 product line was designed specifically for high-bandwidth portable FM communication systems - delivering integrated mixer, IF amplification, quadrature detection, and RSSI functionality in a single low-voltage IC.
FAQ
What is the operating voltage range of the SA636BS,115?
The SA636BS,115 operates from 2.7 V to 5.5 V, with typical performance characterized at 3 V. This low-voltage capability supports battery-powered portable devices including DECT handsets and digital cordless telephones, while maintaining full functionality across the specified ambient temperature range of −40°C to +85°C.
How does the RSSI output of the SA636BS,115 differ from the SA636DK/02 variant?
The SA636BS,115 uses the same un-screened RSSI output specification as the SA636DK/01: Vo(RSSI) = 0.2–0.5 V at −118 dBm IF level. In contrast, SA636DK/02 has factory-screened RSSI output (0.15–0.45 V at −118 dBm) for tighter calibration in low-signal applications - a distinction not present in the SA636BS,115.
What is the purpose of the RSSI_FEEDBACK pin on the SA636BS,115?
The RSSI_FEEDBACK pin (Pin 4) provides access to the internal RSSI op amp's negative input, allowing designers to add external resistive gain-setting networks or RC filters. This enables precise RSSI output scaling, second-order temperature compensation, or noise filtering - enhancing measurement accuracy in demanding RF environments.
Can the SA636BS,115 be used with a crystal oscillator or only LC-based oscillators?
Yes, the SA636BS,115 supports both configurations: crystal oscillators up to 150 MHz (using Hartley or Colpitts topologies) and LC-based oscillators up to 1 GHz. The OSC_IN and OSC_OUT pins are designed for direct connection to either type, with internal biasing optimized for stable startup and low phase noise in portable FM receiver applications.
What thermal considerations apply to the HVQFN20 package of the SA636BS,115?
The SA636BS,115 in HVQFN20 (SOT917-1) requires the exposed die attach paddle (DAP) to be soldered to a PCB ground plane with thermal vias. This achieves a junction-to-ambient thermal impedance of 40 K/W - significantly lower than the SSOP20 variant (117 K/W) - ensuring reliable operation under continuous RF load in compact portable designs.
SA636BS,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- SA636
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- Cellular, ASK, DECT, FSK, UHF, VHF
- Frequency:
- 500MHz
- Number of Mixers:
- 1
- Gain:
- 11dB
- Noise Figure:
- 12dB
- Secondary Attributes:
- Up Converter
- Current - Supply:
- 6.5mA
- Voltage - Supply:
- 2.7V ~ 5.5V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HVQFN (4x4)
SA636BS,115 FAQ
1.How can I place an order for SA636BS,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA636BS,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 SA636BS,115 reliable?
The price and inventory of SA636BS,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA636BS,115 is usually 5 days.
3.What payment methods are accepted for SA636BS,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA636BS,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA636BS,115?
SA636BS,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA636BS,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 SA636BS,115?
For technical support, including SA636BS,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA636BS,115 requirements.
6.How does Aetrix verify that SA636BS,115 is sourced from the original manufacturer or authorized distributors?
All SA636BS,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 SA636BS,115 meets industry standards.
7.What is the process for return or replacement of SA636BS,115?
All SA636BS,115 units undergo pre-shipment inspection (PSI). If there is an issue with SA636BS,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 SA636BS,115 part is unused and in its original packaging.
Return procedure for SA636BS,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA636BS,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…
