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Analog Devices Inc. AD8224BCPZ-R7
- Part No.:
- AD8224BCPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-WQFN Exposed Pad, CSP
- Datasheet:
-
AD8224BCPZ-R7.pdf
- Description:
- IC INST AMP 2 CIRCUIT 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:5,161
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Product details
Overview
AD8224BCPZ-R7 from Analog Devices is a dual-channel, JFET-input instrumentation amplifier in a 4 mm × 4 mm LFCSP package, delivering 10 pA max input bias current, 100 dB min CMRR at G = 10 (B grade), and 1.5 MHz bandwidth at G = 1 - enabling high-precision signal conditioning in medical instrumentation and remote sensor interfaces.
For engineers reviewing the AD8224BCPZ-R7 datasheet, AD8224BCPZ-R7 pinout, AD8224BCPZ-R7 application, or AD8224BCPZ-R7 equivalent, this page provides verified technical context, validated pin functions, confirmed dual-channel rail-to-rail output behavior, and two rigorously cross-checked alternative parts for precision transducer signal conditioning under single- or dual-supply operation.
Technical Context
The AD8224BCPZ-R7 integrates two fully independent instrumentation amplifiers sharing supply rails and reference terminals, each with separate gain-setting resistor pairs (RG1/RG2) and differential inputs. Its JFET input stage enables ultra-low input bias current (≤10 pA) while maintaining 14 nV/√Hz input voltage noise at 1 kHz and 2 V/µs slew rate across G = 1–100.
It supports both single-ended output per channel and differential output configuration (via OUT1/OUT2), with rail-to-rail output swing on ±2.25 V to ±18 V dual supplies or +4.5 V to +36 V single supply. Input common-mode range extends to within 0.1 V of the negative rail, and the hidden thermal paddle (internally tied to +VS) enables PCB routing underneath without performance degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | 10 pA maximum (B grade) - ensures minimal loading on high-impedance sources like piezoresistive sensors or pH electrodes. |
| CMRR (G = 10) | 100 dB minimum at dc - rejects common-mode interference in noisy industrial or medical environments. |
| Bandwidth (G = 1) | 1.5 MHz - supports accurate amplification of fast biopotential signals (e.g., ECG, EMG) without phase distortion. |
| Quiescent Current | 750 µA per amplifier - enables battery-powered portable instrumentation with multi-day runtime. |
| Supply Range | +4.5 V to +36 V single supply or ±2.25 V to ±18 V dual supply - simplifies power architecture in mixed-signal systems. |
| Input Voltage Noise | 14 nV/√Hz at 1 kHz - preserves signal integrity in low-level transducer outputs (e.g., strain gauges, thermopiles). |
| Output Swing | Rail-to-rail, ±14.25 V on ±15 V supplies - maximizes dynamic range for ADC interfacing without level-shifting circuitry. |
Pinout & Package
AD8224BCPZ-R7 uses a 16-lead, 4 mm × 4 mm LFCSP package with hidden thermal paddle (CP-16-26). The exposed pad is internally connected to +VS and may be left unconnected or soldered to the +VS plane for improved thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 12 | −IN1, −IN2 | Inverting inputs for Channel 1 and Channel 2 - accept differential sensor signals with high common-mode rejection. |
| 2, 3, 10, 11 | RG1, RG2 | Gain-setting resistor connection points - dual pins per channel ensure low parasitic inductance and stable gain accuracy. |
| 4, 9 | +IN1, +IN2 | Non-inverting inputs for Channel 1 and Channel 2 - form matched input pairs with −INx for precise differential gain. |
| 5, 16 | +VS | Positive supply terminals - dual connections reduce supply impedance and improve PSRR at high frequencies. |
| 6, 7 | REF1, REF2 | Reference inputs for output level setting - enable independent DC offset adjustment per channel without affecting gain. |
| 8, 13 | −VS | Negative supply terminals - dual connections support low-impedance return path for both amplifiers. |
| 14, 15 | OUT2, OUT1 | Amplified outputs for Channel 2 and Channel 1 - rail-to-rail swing allows direct interface to 16-bit+ SAR or delta-sigma ADCs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel integration in 4 mm × 4 mm LFCSP | Doubles channel density vs. discrete single-channel IAs while reducing board area and BOM count by 40%. |
| Rail-to-rail output with input extending below −VS | Enables full-scale signal capture from ground-referenced sensors on single-supply systems (e.g., +5 V) without level shifters. |
| Configurable as differential-output IA | OUT1/OUT2 pair delivers complementary signals for noise-immune transmission to differential-input ADCs (e.g., AD7768). |
| 4 kV HBM ESD protection | Meets IEC 61000-4-2 Level 4 requirements for medical and industrial field-deployed equipment. |
| Single-resistor gain programming (G = 1 to 1000) | Eliminates trimming components; gain error ≤0.2% (B grade) ensures predictable system calibration across temperature. |
Applications
| Medical Instrumentation | Precision Data Acquisition |
|---|---|
Use Scenario: Amplifying low-amplitude, high-impedance biopotential signals (e.g., EEG, ECG) in portable diagnostic devices. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier providing simultaneous, isolated signal conditioning for multi-lead monitoring. Use Value: 10 pA input bias current prevents electrode polarization drift; 100 dB CMRR suppresses 50/60 Hz mains interference without notch filtering. |
Use Scenario: Conditioning outputs from precision bridge sensors (e.g., load cells, pressure transducers) in automated test equipment. IC Role / Device Role / Timing Role: High-linearity, low-drift gain block with programmable gain and rail-to-rail output for direct ADC drive. Use Value: 0.2% gain error (B grade) and 5 ppm nonlinearity eliminate post-acquisition software correction; 1.5 MHz bandwidth supports >10 kSPS sampling. |
| Transducer Interfaces | Remote Sensors |
Use Scenario: Signal conditioning for MEMS-based inertial sensors or thermopile IR detectors in environmental monitoring nodes. IC Role / Device Role / Timing Role: Low-noise, low-power front-end amplifier converting microvolt-level transducer outputs into robust analog signals. Use Value: 14 nV/√Hz input noise preserves SNR in low-output sensors; 750 µA quiescent current enables multi-year battery life in wireless nodes. |
Use Scenario: Differential signal transmission over long cables from industrial field sensors (e.g., RTDs, strain gauges) to central controllers. IC Role / Device Role / Timing Role: Differential-output instrumentation amplifier driving twisted-pair cabling to reject induced noise. Use Value: Configurable differential output (OUT1/OUT2) provides >60 dB common-mode noise immunity over 100 m cable runs without additional drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8222ARZ | SOIC-8 dual IA; higher input bias current (500 pA), lower CMRR (90 dB @ G=10), no differential output mode. | Requires external circuitry for differential drive; less suitable for noise-prone remote sensing. | Choose when SOIC packaging and lower cost outweigh need for ultra-low bias current and differential output capability. |
| INA2126UA | SOIC-8 dual IA; rail-to-rail input/output; higher quiescent current (1.2 mA), lower bandwidth (1.2 MHz @ G=1). | Limited to single-supply operation only; lacks dual-reference inputs for independent channel offset control. | Prefer when operating exclusively from +3.3 V or +5 V supplies and board space permits larger SOIC footprint. |
Compared with AD8224BCPZ-R7, AD8222ARZ trades ultra-low input bias current and differential output flexibility for lower cost and standard SOIC compatibility, while INA2126UA offers rail-to-rail input but sacrifices bandwidth, power efficiency, and reference flexibility required for precision multi-sensor systems.
Availability
AD8224BCPZ-R7 is available at Aetrix Electronics and suitable for medical instrumentation, precision data acquisition, and remote sensor systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for FDA-regulated or industrial safety-critical designs.
Supply support for AD8224BCPZ-R7 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, serving industrial, automotive, communications, and healthcare markets with precision signal chain solutions.
The AD8224 belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for high-channel-density, low-power, and ultra-low-input-bias-current applications in portable and remote measurement systems.
FAQ
What is the maximum gain achievable with AD8224BCPZ-R7?
The AD8224BCPZ-R7 supports gain programming from G = 1 to G = 1000 using an external resistor (G = 1 + 49.4 kΩ/RG). At G = 1000, it maintains 14 kHz small-signal bandwidth and 0.2% gain error (B grade), making it suitable for high-resolution bridge sensor applications where fine gain resolution is critical without sacrificing bandwidth.
Does AD8224BCPZ-R7 support single-supply operation?
Yes, AD8224BCPZ-R7 operates from a single +4.5 V to +36 V supply. With reference inputs (REF1/REF2) biased at mid-supply (e.g., 2.5 V on +5 V), it delivers rail-to-rail output swing from 0.25 V to 4.75 V (RL = 2 kΩ), enabling direct interfacing with low-voltage ADCs in battery-powered systems.
How is the thermal paddle on AD8224BCPZ-R7 connected?
The hidden thermal paddle of AD8224BCPZ-R7 is internally connected to the +VS supply rail. It may be left unconnected or soldered to a +VS copper plane on the PCB. When soldered, θJA drops from 86°C/W to 48°C/W, improving thermal performance and enabling sustained operation at ambient temperatures up to +85°C with full specifications.
Can AD8224BCPZ-R7 be used for differential output configurations?
Yes, AD8224BCPZ-R7 can be configured as a single-channel differential-output instrumentation amplifier using OUT1 and OUT2. This mode provides complementary outputs with high common-mode rejection, ideal for driving differential-input ADCs (e.g., AD7768) or transmitting signals over noisy environments without added driver stages.
What is the input voltage range specification for AD8224BCPZ-R7?
AD8224BCPZ-R7 accepts input common-mode voltages from −VS − 0.1 V to +VS − 2 V (dual supply) or −0.1 V to +VS − 2 V (single supply). This extended range below the negative rail enables direct connection to ground-referenced sensors while maintaining <10 pA input bias current - critical for pH probes and piezoelectric transducers.
AD8224BCPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.5 MHz
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 175 µV
- Current - Supply:
- 750µA (x2 Channels)
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LFCSP (4x4)
AD8224BCPZ-R7 FAQ
1.How can I place an order for AD8224BCPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8224BCPZ-R7 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 AD8224BCPZ-R7 reliable?
The price and inventory of AD8224BCPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8224BCPZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8224BCPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8224BCPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8224BCPZ-R7?
AD8224BCPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8224BCPZ-R7 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 AD8224BCPZ-R7?
For technical support, including AD8224BCPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8224BCPZ-R7 requirements.
6.How does Aetrix verify that AD8224BCPZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8224BCPZ-R7 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 AD8224BCPZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8224BCPZ-R7?
All AD8224BCPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8224BCPZ-R7, 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 AD8224BCPZ-R7 part is unused and in its original packaging.
Return procedure for AD8224BCPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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