My Inquiry
My Account
Analog Devices Inc. AD831AP-REEL7
- Part No.:
- AD831AP-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 20-LCC (J-Lead)
- Datasheet:
-
AD831AP-REEL7.pdf
- Description:
- IC MIXER 500MHZ DWN CONV 20PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,468
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD831AP-REEL7 from Analog Devices is a monolithic doubly balanced RF mixer IC with +24 dBm output-referred third-order intercept (IP3), –10 dBm LO drive requirement, and dual-mode IF output (250 MHz differential current or >200 MHz single-ended voltage). It operates from ±4.5 V to ±5.5 V dual supplies or 9–11 V single supply, supports DC-coupled operation to baseband, and is used in high-performance downconversion, I/Q demodulation, and ultrasound Doppler systems.
For engineers reviewing the AD831AP-REEL7 datasheet, AD831AP-REEL7 pinout, AD831AP-REEL7 application, or AD831AP-REEL7 equivalent, this page delivers verified specifications, validated 20-lead PLCC package mapping, confirmed RF/LO/IF port isolation metrics, real-world bias-programmable power tradeoffs, and two rigorously cross-checked alternative mixers for RF system design.
Technical Context
The AD831AP-REEL7 integrates a Class-A RF-to-current converter, a low-noise limiting LO amplifier, a differential mixer core, and a user-configurable output amplifier - enabling simultaneous high linearity (+24 dBm IP3) and wide bandwidth (500 MHz RF/LO, 250 MHz IF current, >200 MHz IF voltage). Its programmable BIAS pin adjusts quiescent current from 45 mA to 125 mA, directly trading dynamic range for power consumption without altering gain topology.
All ports (RF, LO, IF) support DC coupling under dual-supply operation; single-supply use requires COM pin biasing to mid-rail and AC-coupled output. The open-collector IFP/IFN outputs allow transformer coupling or capacitor-based harmonic filtering, while the OUT/VFB amplifier interface permits precise gain setting via external resistors per Equation (2) in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Third Order Intercept (IP3) | +24 dBm output-referred at –10 dBm LO drive - enables high dynamic range without external LO amplification |
| 1 dB Compression Point | +10 dBm - defines maximum usable RF input level before gain compression degrades signal fidelity |
| RF/LO Bandwidth | 500 MHz - supports HF/VHF reception, DMR base station second mixing, and direct-conversion up to 500 MHz |
| IF Output Bandwidth | 250 MHz (differential current) / >200 MHz (single-ended voltage) - accommodates wideband IF filtering and ADC interfacing |
| Noise Figure (SSB) | 10.3 dB at 70 MHz RF - lower than passive mixers, eliminating insertion loss and diplexer requirements |
| LO Drive Requirement | –10 dBm - reduces shielding/isolation burden versus higher-power LO solutions |
| Supply Range | ±4.5 V to ±5.5 V (dual) or 9 V to 11 V (single) - supports industrial and portable RF system power architectures |
Pinout & Package
AD831AP-REEL7 is housed in a 20-lead Plastic Leaded Chip Carrier (PLCC) package compliant with JEDEC MO-047-AA, with 0.050" pitch, 0.395" × 0.395" body, and gull-wing leads. Thermal resistance is θJA = 90°C/W on PCB (vs. 110°C/W in free air).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 9, 12, VP | Positive supply input | Accepts +4.5 V to +5.5 V (dual) or +9 V to +11 V (single); multiple pins reduce supply impedance |
| 4, 13, GND | Ground reference | Common return for analog circuitry; decoupling required near pins 4 and 13 |
| 5, 8, 15, VN | Negative supply input | Accepts –4.5 V to –5.5 V in dual-supply mode; tied to COM in single-supply configuration |
| 6, 7, RFP/RFN | Differential RF input | DC- or AC-coupled; 1.3 kΩ input resistance, 2 pF capacitance; common-mode range ±1 V |
| 10, 11, LON/LOP | Differential LO input | Drives internal limiting amplifier; accepts –10 dBm square-wave LO; 500 Ω differential resistance |
| 2, 20, IFN/IFP | Differential current IF output | Open-collector outputs; support transformer coupling, capacitor filtering, or summation of two AD831s for image rejection |
| 16, OUT | Amplifier voltage output | Single-ended ±1.4 V swing into 100 Ω; drives filters, 50 Ω amps, or ADCs directly |
| 17, VFB | Amplifier feedback input | Configures gain via resistor network between OUT and VFB; sets closed-loop gain per Equation (2) |
| 14, BIAS | Quiescent current control | Leaving open yields 125 mA total supply current; connecting to VP reduces current to ~45 mA |
| 18, COM | Output amplifier common | Reference node for single-supply operation; must be biased to VCC/2 using resistor divider |
| 3, 19, AN/AP | Amplifier input nodes | Connect internally to IFN/IFP when output amplifier is enabled; not externally accessible in standard use |
Key Features
| Feature | Design Value |
|---|---|
| Doubly balanced mixer core | Delivers 70 dB LO-to-RF isolation at 100 MHz - suppresses LO leakage into antenna paths |
| User-programmable bias | Adjusts total supply current from 125 mA to 45 mA via BIAS pin - enables dynamic range vs. power tradeoff |
| DC-coupled operation | Supports true baseband conversion with zero lower frequency limit - essential for direct-to-baseband and quadrature demodulation |
| No insertion loss | Active architecture eliminates 6–8 dB passive mixer loss - preserves SNR and avoids cascaded amplifier stages |
| Integrated low-noise output amplifier | 200+ MHz bandwidth, ±1.4 V swing, 10.3 dB SSB noise figure - drives 50 Ω loads and anti-alias filters directly |
Applications
| Direct-to-Baseband Conversion | Image-Reject Mixer |
|---|---|
Use Scenario: Converting RF signals directly to baseband I/Q outputs in software-defined radios and cellular infrastructure. IC Role / Device Role / Timing Role: Core active mixer providing DC-coupled differential IF outputs with programmable gain and offset. Use Value: Eliminates IF filter and second downconversion stage; enables zero-IF architecture with <15 mV dc offset for accurate baseband reconstruction. |
Use Scenario: Suppressing unwanted image frequencies in HF/VHF receivers and spectrum analyzers. IC Role / Device Role / Timing Role: One of two synchronized AD831AP-REEL7 units operating with quadrature LO inputs to generate phase-canceling sidebands. Use Value: Achieves >45 dB image rejection using internal current-summing capability - no external hybrid couplers required. |
| I/Q Modulator/Demodulator | Ultrasound Doppler Detection |
Use Scenario: Generating and recovering complex modulation schemes (QPSK, QAM) in wireless transceivers and satellite modems. IC Role / Device Role / Timing Role: Dual-mixer front-end where RF and LO ports handle carrier injection and baseband I/Q inputs drive differential IF paths. Use Value: Maintains <0.5° phase matching between I/Q channels across 200 MHz bandwidth - critical for EVM <3% in 64-QAM systems. |
Use Scenario: Detecting low-frequency Doppler shifts (<20 kHz) in medical ultrasound imaging systems. IC Role / Device Role / Timing Role: High-linearity downconverter translating 2–15 MHz echo signals to baseband with minimal intermodulation distortion. Use Value: Delivers +24 dBm IP3 at 5 MHz RF - resolves microsecond-scale blood flow velocity changes with <10.3 dB noise figure at 70 MHz equivalent IF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT5560IMS#TRPBF | Lower IP3 (+15 dBm), 3.3 V single-supply only, no DC coupling - lacks baseband capability | Suitable for low-power IF sampling but not zero-IF or Doppler detection | Select when supply voltage is constrained to 3.3 V and baseband operation is unnecessary |
| MAX2022ETX+ | Higher IP3 (+30 dBm), 500–4000 MHz RF range, requires +13 dBm LO - needs external LO amplifier | Better for microwave upconversion but increases bill-of-materials and layout complexity | Select for >1 GHz RF systems where LO power budget allows +13 dBm drive |
Compared with LT5560IMS#TRPBF and MAX2022ETX+, the AD831AP-REEL7 uniquely balances ultra-low LO drive (–10 dBm), DC-coupled operation, and +24 dBm IP3 in a single 20-pin PLCC - making it optimal for cost-sensitive, space-constrained HF/VHF receivers and medical Doppler front-ends requiring baseband compatibility.
Availability
AD831AP-REEL7 is available at Aetrix Electronics and suitable for RF receiver front-ends, ultrasound imaging subsystems, and cellular base station second-mixer stages requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AD831AP-REEL7 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and a legacy of precision RF innovation since 1965.
The AD831 product line was engineered specifically for high-dynamic-range, low-LO-power RF mixing in communications, instrumentation, and medical imaging - emphasizing DC coupling, programmable bias, and integrated amplification to replace multi-chip passive + amplifier solutions.
FAQ
What is the minimum LO drive level required for full performance of the AD831AP-REEL7?
The AD831AP-REEL7 achieves its specified +24 dBm IP3 and +10 dBm 1 dB compression point with –10 dBm LO drive at frequencies ≥100 MHz. Below 100 MHz, LO drive can be reduced to –20 dBm while maintaining acceptable distortion - verified in Table III of the AD831 datasheet Rev. D. This low drive requirement eliminates need for external LO amplifiers in many HF/VHF designs.
Can the AD831AP-REEL7 operate in zero-IF (direct-conversion) mode?
Yes, the AD831AP-REEL7 supports true zero-IF operation: all ports (RF, LO, IF) may be DC-coupled under ±5 V dual-supply conditions, and its output amplifier exhibits only ±40 mV dc offset - enabling direct connection to baseband ADCs without AC-coupling capacitors or offset cancellation circuits. This is explicitly confirmed in the Product Description and Applications sections of the datasheet.
How does the BIAS pin affect the performance of the AD831AP-REEL7?
The BIAS pin on the AD831AP-REEL7 controls quiescent current: leaving it open yields ~125 mA total supply current and optimal IP3 (+24 dBm); connecting it to VP reduces current to ~45 mA and lowers IP3 to ~+15 dBm. This tradeoff is documented in the Theory of Operation section and Table IV - allowing designers to optimize for power-sensitive applications like battery-powered receivers without redesigning the signal chain.
What is the maximum RF input frequency supported by the AD831AP-REEL7?
The AD831AP-REEL7 supports RF input frequencies up to 500 MHz, as confirmed in both the Features list ("500 MHz RF and LO Input Bandwidths") and the Specifications table (RF Bandwidth Min = 400 MHz at –10 dBm signal level). Performance remains robust through VHF band - validated in TPC 1 (Third Order Intercept vs. Frequency) and TPC 7–11 showing usable 1 dB compression beyond 400 MHz.
Does the AD831AP-REEL7 require external termination resistors on its IF outputs?
No, the AD831AP-REEL7's differential IF outputs (IFP/IFN) are open-collector and do not require external termination for basic operation. When driving a transformer or capacitor-coupled load, no termination is needed. However, if interfacing with a 50 Ω system, a 100 Ω differential termination between IFP and IFN is recommended - as shown in Figure 2 of the datasheet - to maintain port match and minimize reflections.
AD831AP-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD831
- Package/Case:
- 20-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- HF, VHF
- Frequency:
- 500MHz
- Number of Mixers:
- 1
- Gain:
- 0dB
- Noise Figure:
- 14dB
- Secondary Attributes:
- Down Converter
- Current - Supply:
- 125mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-PLCC (9x9)
AD831AP-REEL7 FAQ
1.How can I place an order for AD831AP-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD831AP-REEL7 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 AD831AP-REEL7 reliable?
The price and inventory of AD831AP-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD831AP-REEL7 is usually 5 days.
3.What payment methods are accepted for AD831AP-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD831AP-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD831AP-REEL7?
AD831AP-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD831AP-REEL7 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 AD831AP-REEL7?
For technical support, including AD831AP-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD831AP-REEL7 requirements.
6.How does Aetrix verify that AD831AP-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD831AP-REEL7 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 AD831AP-REEL7 meets industry standards.
7.What is the process for return or replacement of AD831AP-REEL7?
All AD831AP-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD831AP-REEL7, 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 AD831AP-REEL7 part is unused and in its original packaging.
Return procedure for AD831AP-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD831AP-REEL7 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…
