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Analog Devices Inc. AD8224HBCPZ-R7
- Part No.:
- AD8224HBCPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VQFN, CSP
- Datasheet:
-
AD8224HBCPZ-R7.pdf
- Description:
- IC INST AMP 2 CIRCUIT 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:367
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Product details
Overview
AD8224HBCPZ-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 rail-to-rail output swing on ±2.25 V to ±18 V or +4.5 V to +36 V supplies-used in precision medical sensor front-ends and low-power transducer interfaces.
For engineers reviewing the AD8224HBCPZ-R7 datasheet, AD8224HBCPZ-R7 pinout, AD8224HBCPZ-R7 application, or AD8224HBCPZ-R7 equivalent, this page provides verified specifications, dual-channel pin mapping, differential-output configuration support, gain-setting resistor interface details, and validated alternatives for high-CMRR, low-IB signal conditioning designs.
Technical Context
The AD8224HBCPZ-R7 integrates two matched JFET-input instrumentation amplifiers sharing supply rails and reference terminals, each with independent gain-setting resistors (RG1/RG2) enabling individual gain programming from 1 to 1000. Its architecture supports both single-ended and differential output configurations, with the latter requiring external inversion of one channel's output to generate true complementary signals.
It features a custom LFCSP package with hidden thermal paddle internally tied to +VS, permitting PCB vias beneath the die for enhanced thermal management while maintaining full bias current performance. Input common-mode range extends 0.1 V below −VS, and rail-to-rail output delivers >95% of supply swing into 2 kΩ loads across −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | 10 pA max (B grade) - enables high-impedance sensor interfacing without significant DC error |
| CMRR (G = 10) | 100 dB min at dc - rejects >99.999% of common-mode interference in noisy industrial environments |
| Bandwidth (G = 1) | 1.5 MHz - supports fast settling for high-resolution data acquisition up to ~1 MSPS effective throughput |
| Input Voltage Noise | 14 nV/√Hz at 1 kHz - preserves SNR in microvolt-level physiological signal amplification |
| Quiescent Current | 750 µA per amplifier - allows dual-channel precision amplification in battery-powered portable instruments |
| Supply Range | +4.5 V to +36 V single or ±2.25 V to ±18 V dual - accommodates legacy industrial rails and modern low-voltage systems |
| Gain Range | 1 to 1000 via external RG resistor - simplifies calibration and dynamic range adaptation without re-spinning PCB |
Pinout & Package
AD8224HBCPZ-R7 uses a 16-lead, 4 mm × 4 mm LFCSP package with hidden thermal paddle connected internally to +VS. The package supports routing and vias underneath, enabling compact layout and improved thermal dissipation when the paddle is soldered to a ground or +VS plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| −IN1, −IN2 | Negative input of In-Amp 1 / In-Amp 2 | Differential input pair terminals; high-impedance JFET inputs enable direct connection to bridge sensors or thermocouples |
| +IN1, +IN2 | Positive input of In-Amp 1 / In-Amp 2 | Complementary differential input terminals; support common-mode voltages down to −VS − 0.1 V |
| RG1, RG2 (pins 2–3, 10–11) | Gain-setting resistor connections | Two pins per amplifier provide Kelvin connection for precise gain control; G = 1 + (49.4 kΩ / RG) |
| REF1, REF2 | Reference input for In-Amp 1 / In-Amp 2 | Set output common-mode level independently; accepts dc voltage from 0 V to +VS in single-supply mode |
| OUT1, OUT2 | Amplifier outputs | Rail-to-rail outputs drive ADCs directly; OUT1/OUT2 can be configured as differential pair with external inversion |
| +VS (pins 5, 16) | Positive supply rail | Dual connection points reduce supply impedance; internal tie to exposed paddle improves thermal path |
| −VS (pins 8, 13) | Negative supply rail | Dual connection supports low-impedance return path; required for dual-supply operation or single-supply negative headroom |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel density in 4 mm × 4 mm LFCSP | Doubles channel count vs. single-channel equivalents without increasing board area or cost per channel |
| 10 pA max input bias current (B grade) | Enables stable DC-coupled amplification of high-impedance sources like pH electrodes or piezoresistive sensors |
| 100 dB CMRR minimum at G = 10 | Ensures accurate differential measurement in presence of strong EMI or ground-loop noise up to 10 kHz |
| Single-resistor programmable gain (1–1000) | Eliminates need for precision trimming or digital calibration during production test |
| Rail-to-rail output with 2 V/µs slew rate | Delivers full dynamic range into ADCs while maintaining fidelity for fast transient signals |
Applications
| Medical Instrumentation | Precision Data Acquisition |
|---|---|
Use Scenario: Amplifying low-amplitude biopotential signals (ECG, EEG) from dry electrodes with high source impedance. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier providing simultaneous, isolated front-end gain and CMRR filtering before multiplexing. Use Value: 10 pA input bias current prevents electrode polarization drift; 100 dB CMRR suppresses 50/60 Hz mains interference without notch filters. |
Use Scenario: Conditioning outputs from strain-gauge bridges in structural health monitoring systems deployed outdoors. IC Role / Device Role / Timing Role: Precision in-amp converting mV-level differential bridge outputs to ratiometric ADC inputs with temperature compensation. Use Value: 0.6 pA max input offset current minimizes thermal EMF errors; rail-to-rail output maximizes utilization of 16-bit ADC full scale. |
| Transducer Interfaces | Remote Sensors |
Use Scenario: Signal conditioning for MEMS pressure sensors in automotive tire pressure monitoring (TPMS) modules. IC Role / Device Role / Timing Role: Dual-channel in-amp driving successive approximation register (SAR) ADCs with synchronized sampling. Use Value: 750 µA per amplifier enables dual-sensor readout within 10 µA total system sleep current budget. |
Use Scenario: Differential output configuration driving twisted-pair cabling from remote industrial temperature sensors over 100 m distances. IC Role / Device Role / Timing Role: One AD8224HBCPZ-R7 channel configured as differential driver (OUT1 + inverted OUT2) for noise-immune transmission. Use Value: Common-mode rejection >90 dB at 10 kHz ensures integrity of small-signal measurements amid motor-drive EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8222ARZ-R7 | Single-channel, same JFET input, 10 pA IB, but no differential output capability; 8-lead SOIC package | Suitable only for space-tolerant, single-channel designs requiring identical dc specs but not dual-channel integration | Select when board area is unconstrained and dual-channel density is unnecessary |
| INA128UA/2K5 | Bipolar input (2 nA IB), lower CMRR (110 dB typ at G=100), wider supply (±2.25 V to ±18 V), 8-lead SOIC | Better for higher-speed, lower-precision applications where input bias current <100 pA is acceptable | Select when cost sensitivity outweighs ultra-low IB and dual-channel requirements |
Compared with AD8224HBCPZ-R7, AD8222ARZ-R7 offers identical precision but lacks channel integration and differential output flexibility, while INA128UA/2K5 trades 100× higher input bias current for broader availability and lower unit cost-making AD8224HBCPZ-R7 optimal for compact, dual-sensor, ultra-high-impedance systems.
Availability
AD8224HBCPZ-R7 is available at Aetrix Electronics and suitable for medical instrumentation, precision data acquisition, and transducer interface applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for ISO 13485-compliant production.
Supply support for AD8224HBCPZ-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 precision instrumentation, industrial automation, and healthcare markets since 1965.
The AD8224 belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for low-power, high-CMRR, dual-channel signal conditioning in portable and distributed sensing systems.
FAQ
What is the maximum input common-mode voltage range for AD8224HBCPZ-R7?
The AD8224HBCPZ-R7 supports an input common-mode voltage range from −VS − 0.1 V to +VS − 2 V at 25°C, extending to +VS − 2.1 V over temperature. This allows operation with inputs slightly below the negative rail-critical for interfacing with grounded sensors in single-supply systems. The specification applies to both channels independently and is validated for B-grade devices.
Does AD8224HBCPZ-R7 support true differential output without external components?
No, AD8224HBCPZ-R7 does not provide true differential output natively. It requires external inversion of one output (e.g., using a precision op amp) to generate complementary signals. The datasheet Figure 64 shows this differential output configuration, where OUT1 and inverted OUT2 form a balanced pair-enabling noise immunity for remote sensor links or differential ADC drives.
What is the thermal pad connection requirement for AD8224HBCPZ-R7?
The exposed thermal pad of AD8224HBCPZ-R7 is internally connected to +VS. It may be left unconnected or soldered to a +VS copper plane on the PCB. Soldering improves thermal resistance (θJA drops from 86°C/W to 48°C/W), but electrically it must remain at +VS potential-never grounded or tied to another voltage.
Can AD8224HBCPZ-R7 operate from a single +5 V supply?
Yes, AD8224HBCPZ-R7 operates from a single +5 V supply with VREF set to 2.5 V. Output swing is specified as 0.25 V to 4.75 V into 2 kΩ, and CMRR remains ≥94 dB at G = 10. Input common-mode range is −0.1 V to +3 V, supporting direct connection to most bridge or thermistor-based sensors referenced to ground.
How is gain accuracy affected by temperature in AD8224HBCPZ-R7?
AD8224HBCPZ-R7 exhibits gain drift of ≤2 ppm/°C for G = 1 and ≤−50 ppm/°C for G > 10 over −40°C to +85°C. This means a 100× gain setting changes by less than 0.005% across the full industrial temperature range-enabling stable calibration in unheated enclosures or outdoor deployments without active temperature compensation.
AD8224HBCPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-VQFN, 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LFCSP-VQ (4x4)
AD8224HBCPZ-R7 FAQ
1.How can I place an order for AD8224HBCPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8224HBCPZ-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 AD8224HBCPZ-R7 reliable?
The price and inventory of AD8224HBCPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8224HBCPZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8224HBCPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8224HBCPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8224HBCPZ-R7?
AD8224HBCPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8224HBCPZ-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 AD8224HBCPZ-R7?
For technical support, including AD8224HBCPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8224HBCPZ-R7 requirements.
6.How does Aetrix verify that AD8224HBCPZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8224HBCPZ-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 AD8224HBCPZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8224HBCPZ-R7?
All AD8224HBCPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8224HBCPZ-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 AD8224HBCPZ-R7 part is unused and in its original packaging.
Return procedure for AD8224HBCPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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