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NXP Semiconductors SA612AD/01,118
- Part No.:
- SA612AD/01,118
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Mixers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SA612AD/01,118.pdf
- Description:
- IC MIXER 500MHZ UP CONVRT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,298
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Product details
Overview
SA612AD/01,118 from NXP Semiconductors is a low-power VHF monolithic double-balanced mixer with integrated oscillator and voltage regulator, designed for RF signal conversion in communication systems. It delivers 14 dB typical conversion gain at 45 MHz, supports RF input up to 500 MHz and LO frequencies up to 200 MHz, and operates from 4.5 V to 8.0 V with only 2.4–3.0 mA supply current. Its primary role is frequency downconversion in cordless telephones and cellular radio front-ends.
For engineers reviewing the SA612AD/01,118 datasheet, SA612AD/01,118 pinout, SA612AD/01,118 application, or SA612AD/01,118 equivalent, key selection criteria include its Gilbert-cell architecture, 5.0 dB typical noise figure at 45 MHz, internal biasing of RF inputs (1.5 kΩ || 3 pF), balanced differential outputs, and oscillator configurability for crystal/tank/external LO drive - all critical for IF stage design in battery-powered VHF receivers.
Technical Context
The SA612AD/01,118 implements a Gilbert-cell multiplier topology with a differential RF input stage (IN_A/IN_B) driving a balanced switching cell, enabling high linearity and low-noise mixing. Its on-chip oscillator supports crystal (third-overtone), tuned-tank, or external LO injection via OSC_B (pin 6), with emitter output (OSC_E, pin 7) usable as buffer.
Internally biased RF inputs and mixer outputs eliminate external DC blocking or biasing components: IN_A/IN_B present ~1.5 kΩ || 3 pF impedance through 50 MHz, while OUT_A/OUT_B each connect to VCC via 1.5 kΩ resistors, supporting both single-ended and balanced termination without external pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Input Frequency | Up to 500 MHz - enables direct VHF reception without pre-scaling in portable radios. |
| LO Frequency Range | Up to 200 MHz - supports crystal overtone operation or L/C tank oscillation for compact IF generation. |
| Conversion Gain | 14–17 dB at 45 MHz - provides sufficient signal level to drive ceramic/crystal filters (e.g., SFG455A3) without external amplification. |
| Noise Figure | 5.0 dB typical at 45 MHz - ensures high sensitivity for weak-signal reception (e.g., −119 dBm at 12 dB S/N). |
| Supply Current | 2.4–3.0 mA at 6 V - enables multi-hour battery life in cordless handsets and sonobuoys. |
| Input IP3 | −13 dBm typical - defines large-signal handling limit; requires input attenuation in high-level RF environments like LAN transceivers. |
| Operating Temp | −40 °C to +85 °C - qualified for industrial and outdoor communications equipment deployment. |
Pinout & Package
SA612AD/01,118 is housed in an 8-lead SO (SO8) plastic small outline package per SOT96-1, 3.9 mm body width, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN_A) | RF differential input A | Symmetrical, internally biased RF port; AC-coupled only; 1.5 kΩ || 3 pF impedance to ground. |
| 2 (IN_B) | RF differential input B | Complementary to IN_A; interchangeable but must not be externally DC-biased. |
| 3 (GND) | Analog ground reference | Primary ground return for mixer core, oscillator, and bias network; requires low-inductance PCB connection. |
| 4 (OUT_A) | Mixer differential output A | Internally pulled to VCC via 1.5 kΩ; supports single-ended termination to 50 Ω or balanced IF filter input. |
| 5 (OUT_B) | Mixer differential output B | Complementary to OUT_A; used with OUT_A for balanced IF extraction or individually for single-ended IF. |
| 6 (OSC_B) | Oscillator base input | Accepts external LO (200–300 mVPP) or drives crystal/tank; base node of on-chip oscillator transistor. |
| 7 (OSC_E) | Oscillator emitter output | Provides buffered LO signal; used as crystal oscillator output or to drive external prescaler stages. |
| 8 (VCC) | Positive supply | 4.5–8.0 V input powering mixer, oscillator, and regulator; bypass capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Gilbert-cell mixer core | Delivers 14–17 dB conversion gain and 5.0 dB NF at 45 MHz, enabling high-SNR IF generation with minimal external components. |
| Integrated oscillator | Configurable for crystal (overtone), L/C tank, or external LO injection - eliminates discrete oscillator ICs and reduces BOM count. |
| Internal voltage regulator | Stabilizes bias under varying supply conditions (4.5–8.0 V), ensuring consistent gain and noise performance across battery discharge cycles. |
| Low radiated energy | Minimizes EMI in compact handheld devices; critical for FCC/CE compliance in cordless phones and portable radios. |
| Minimal external parts | Supports direct interface to crystal/ceramic filters (e.g., K&L 38780, CFU455) without coupling transformers or baluns. |
Applications
| Cordless Telephone IF Stage | Portable VHF Transceiver |
|---|---|
|
Use Scenario: 45 MHz RF input mixed with 44.545 MHz third-overtone crystal oscillator to produce 455 kHz IF for demodulation in DECT-class handsets. IC Role / Device Role / Timing Role: Double-balanced mixer and local oscillator generator performing first-stage frequency conversion and LO synthesis. Use Value: Enables full integration of mixer+LO in a single SO8 package, reducing PCB area by >40% versus discrete solutions and lowering system current to <3 mA. |
Use Scenario: VHF receiver front-end converting 144–148 MHz amateur band signals to 10.7 MHz IF using external synthesizer-driven LO injected at OSC_B. IC Role / Device Role / Timing Role: RF-to-IF downconverter with external LO interface and differential output driving ceramic filter. Use Value: Leverages 500 MHz RF bandwidth and −13 dBm IP3 to handle strong adjacent-channel signals while maintaining 5.0 dB NF for weak-signal copy. |
| Cellular Radio Receiver | RF Data Link Modem |
|
Use Scenario: Second IF stage in dual-conversion cellular receiver, accepting 45 MHz IF from first mixer and downconverting to baseband or low-IF using variable LO. IC Role / Device Role / Timing Role: High-linearity, low-noise IF mixer with temperature-compensated bias network for stable S/N across −40 °C to +85 °C. Use Value: Achieves −119 dBm sensitivity at 12 dB S/N when paired with SA614A demodulator, meeting GSM receiver dynamic range requirements. |
Use Scenario: Bidirectional data link transceiver where SA612AD/01,118 handles both transmit upconversion (via reverse signal flow) and receive downconversion in half-duplex mode. IC Role / Device Role / Timing Role: Reconfigurable mixer core supporting both up- and down-conversion paths with shared oscillator resources. Use Value: Reduces component count in compact IoT modems by consolidating two mixer functions into one IC, cutting BOM cost and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar double-balanced mixer and oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SA602AD/01,118 | Same SO8 package and pinout; lower max RF frequency (200 MHz vs. 500 MHz); higher supply current (4.5 mA typ). | Restricted to HF/low-VHF applications; unsuitable for 450 MHz cordless bands or broadband LANs. | Select SA602AD/01,118 only if operating below 200 MHz and higher current is acceptable. |
| NE602N | DIP8 package (SOT97-1); identical electrical specs but incompatible footprint; no oscillator output buffer (OSC_E missing). | Requires through-hole PCB assembly; lacks buffered LO output needed for cascaded prescalers in synthesizer designs. | Choose NE602N only for legacy through-hole designs where SO8 rework is impractical. |
Compared with SA602AD/01,118, the SA612AD/01,118 extends usable RF bandwidth by 2.5× and cuts supply current by 33%, making it superior for modern VHF portable radios; versus NE602N, it enables surface-mount production and adds oscillator buffering critical for frequency-agile systems.
Availability
SA612AD/01,118 is available at Aetrix Electronics and suitable for cordless telephone IF stages, portable VHF transceivers, and RF data link modems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SA612AD/01,118 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 headquarters in Eindhoven, Netherlands.
The SA612AD/01,118 belongs to NXP's legacy RF front-end product line, specifically engineered for low-power, high-sensitivity VHF/UHF receiver architectures in cost-sensitive wireless voice and data equipment.
FAQ
What is the maximum RF input frequency supported by the SA612AD/01,118?
The SA612AD/01,118 supports RF input frequencies up to 500 MHz, as confirmed in Table 6 of the NXP datasheet. This specification enables direct use in VHF bands including 450 MHz cordless telephone systems and 470–494 MHz public safety radios without intermediate frequency translation.
Can the SA612AD/01,118 operate with an external local oscillator signal?
Yes, the SA612AD/01,118 accepts external LO injection at pin 6 (OSC_B) through a DC-blocking capacitor. The datasheet specifies a required input amplitude of 200–300 mVPP, allowing integration with PLL synthesizers or other clock sources while disabling the internal oscillator.
What is the typical noise figure of the SA612AD/01,118 and at what frequency is it measured?
The SA612AD/01,118 has a typical noise figure of 5.0 dB at 45 MHz, as stated in Table 6 (Dynamic Characteristics) of the NXP datasheet. This value is critical for receiver sensitivity calculations and remains stable across the −40 °C to +85 °C operating range.
Does the SA612AD/01,118 require external biasing on its RF input pins?
No, the SA612AD/01,118 features internally biased RF inputs (IN_A and IN_B). The datasheet explicitly warns against external DC biasing, as the pins present ~1.5 kΩ || 3 pF AC impedance and are designed for AC-coupled signal injection only.
What package type and lead count does the SA612AD/01,118 use?
The SA612AD/01,118 uses an 8-lead SO (SO8) plastic small outline package per SOT96-1, with 3.9 mm body width. This surface-mount package is compatible with standard reflow soldering processes and matches the footprint of industry-standard SOIC-8 layouts.
SA612AD/01,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- SA612
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- Cellular, HF, VHF
- Frequency:
- 500MHz
- Number of Mixers:
- 1
- Gain:
- 17dB
- Noise Figure:
- 5dB
- Secondary Attributes:
- Up Converter
- Current - Supply:
- 2.4mA
- Voltage - Supply:
- 4.5V ~ 8V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
SA612AD/01,118 FAQ
1.How can I place an order for SA612AD/01,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA612AD/01,118 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 SA612AD/01,118 reliable?
The price and inventory of SA612AD/01,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA612AD/01,118 is usually 5 days.
3.What payment methods are accepted for SA612AD/01,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA612AD/01,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA612AD/01,118?
SA612AD/01,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA612AD/01,118 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 SA612AD/01,118?
For technical support, including SA612AD/01,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA612AD/01,118 requirements.
6.How does Aetrix verify that SA612AD/01,118 is sourced from the original manufacturer or authorized distributors?
All SA612AD/01,118 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 SA612AD/01,118 meets industry standards.
7.What is the process for return or replacement of SA612AD/01,118?
All SA612AD/01,118 units undergo pre-shipment inspection (PSI). If there is an issue with SA612AD/01,118, 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 SA612AD/01,118 part is unused and in its original packaging.
Return procedure for SA612AD/01,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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