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Analog Devices Inc. AD8224BCPZ-WP
- Part No.:
- AD8224BCPZ-WP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-WQFN Exposed Pad, CSP
- Datasheet:
-
AD8224BCPZ-WP.pdf
- Description:
- IC INST AMP 2 CIRCUIT 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,173
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Product details
Overview
AD8224BCPZ-WP 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. It enables high-precision signal conditioning in medical instrumentation and remote sensor interfaces with rail-to-rail output and single-supply operation down to +4.5 V.
For engineers reviewing the AD8224BCPZ-WP datasheet, AD8224BCPZ-WP pinout, AD8224BCPZ-WP application, or AD8224BCPZ-WP equivalent, this page provides verified specifications, dual-channel pin mapping, B-grade performance validation, differential-output configuration support, and real-world use context for precision data acquisition systems.
Technical Context
The AD8224BCPZ-WP integrates two matched JFET-input instrumentation amplifiers sharing supply rails and reference terminals, each configured via dedicated RG pins for independent gain setting (G = 1 to 1000). Its architecture supports both single-ended and differential output modes, with internal routing enabling full bias current performance even under vias beneath the hidden thermal paddle.
It operates across ±2.25 V to ±18 V dual supplies or +4.5 V to +36 V single supply, with input voltage range extending 0.1 V below −VS and up to 2 V below +VS. The REF1/REF2 pins allow independent level-shifting of each amplifier's output, critical for driving differential-input ADCs without external level translation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | 10 pA max (B grade) - enables ultra-high-impedance transducer interfacing without signal loading. |
| CMRR | 100 dB min at G = 10, DC–60 Hz - rejects common-mode noise in noisy industrial sensor environments. |
| Bandwidth | 1.5 MHz at G = 1 - supports fast settling for high-resolution, multi-channel data acquisition. |
| Input Voltage Noise | 14 nV/√Hz at 1 kHz - preserves SNR in low-level physiological signal amplification. |
| Quiescent Current | 750 µA per amplifier - enables battery-powered portable medical devices with >100-hour runtime. |
| Supply Range | +4.5 V to +36 V single supply - eliminates need for dual-rail generation in space-constrained systems. |
| Rail-to-Rail Output | Swings within 0.25 V of rails (at +5 V supply) - maximizes dynamic range for 12–16-bit ADCs. |
| ESD Rating | 4 kV HBM - withstands handling and board-level ESD events without protection circuitry overhead. |
Pinout & Package
AD8224BCPZ-WP uses a 16-lead, 4 mm × 4 mm LFCSP package with hidden thermal paddle (CP-16-26 variant). The exposed pad is internally connected to +VS and may be left unconnected or soldered to the +VS plane for improved thermal performance (θJA = 48°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 12 | −IN1, −IN2 | Inverting inputs for Channel 1 and Channel 2; high-impedance JFET nodes requiring guarded PCB traces. |
| 2–3, 10–11 | RG1, RG2 | Dual gain-setting resistor connections; each pair defines gain independently as G = 1 + (49.4 kΩ / RG). |
| 4, 9 | +IN1, +IN2 | Non-inverting inputs for Channel 1 and Channel 2; matched to −IN pins for optimal CMRR. |
| 5, 16 | +VS | Positive supply pins; tied internally to exposed thermal pad for thermal and electrical integrity. |
| 6, 7 | REF1, REF2 | Reference inputs for output level-shifting; each sets DC offset independently for differential output mode. |
| 8, 13 | −VS | Negative supply pins; support dual-supply operation or ground reference in single-supply configurations. |
| 14, 15 | OUT2, OUT1 | Amplified outputs; configurable as single-ended or complementary differential outputs (e.g., OUT1/OUT2). |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel density in 4 mm × 4 mm footprint | Doubles channel count vs. discrete single-channel IAs without area penalty or performance trade-off. |
| Input voltage range extends below −VS | Operates with inputs as low as −VS − 0.1 V - accommodates grounded-sensor topologies without level shifters. |
| Gain set by single external resistor per channel | Eliminates trimming or digital calibration; supports precise, stable gains from 1 to 1000 with <0.2% error (B grade). |
| Differential output capability | Enables noise-immune transmission over cables and direct drive of differential-input ADCs (e.g., AD7768). |
| Low 10 Hz noise corner | Maintains sub-µV p-p 0.1–10 Hz noise (0.8 µV p-p at G = 1000) - essential for ECG and strain gauge applications. |
Applications
| Medical Instrumentation | Precision Data Acquisition |
|---|---|
Use Scenario: Amplifying low-amplitude biopotential signals (e.g., ECG, EEG) from dry electrodes with high source impedance. IC Role / Device Role / Timing Role: Dual-channel IA front-end providing simultaneous lead-I and lead-II signal conditioning with matched gain and offset. Use Value: 10 pA input bias current prevents electrode polarization; 100 dB CMRR suppresses 50/60 Hz mains interference without notch filtering. |
Use Scenario: Conditioning outputs from multiple bridge-based sensors (load cells, pressure transducers) in industrial PLC modules. IC Role / Device Role / Timing Role: Two independent, programmable-gain IAs digitizing analog channels with synchronized sampling. Use Value: Independent RG pins enable channel-specific gain scaling; rail-to-rail output ensures full utilization of 16-bit SAR ADC input range. |
| Transducer Interfaces | Remote Sensor Systems |
Use Scenario: Interfacing high-Z piezoelectric accelerometers in structural health monitoring systems. IC Role / Device Role / Timing Role: First-stage signal conditioner rejecting cable-induced common-mode noise while preserving wideband response. Use Value: 1.5 MHz bandwidth at G = 1 captures transient vibration events; 4 kV HBM ESD rating protects against field-installation surges. |
Use Scenario: Signal conditioning for distributed temperature/strain sensors located >10 m from DAQ unit in factory automation. IC Role / Device Role / Timing Role: Differential output driver converting single-ended sensor signals into noise-immune complementary pairs. Use Value: Configurable differential outputs (OUT1/OUT2) reject EMI on long cables; single +5 V supply simplifies remote node power design. |
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 | Single-channel, SOIC-8; 125 µA lower quiescent current but 500 pA max input bias current. | Lacks dual-channel integration and differential output capability; requires two units for same functionality. | Select when board area allows discrete layout and ultra-low power (<250 µA/channel) outweighs channel density. |
| INA2126UA | Single-supply only; 250 pA max input bias current; no differential output mode; 1.2 MHz bandwidth at G = 1. | Not suitable for dual-channel synchronous acquisition or high-impedance remote sensors beyond 1 MΩ. | Choose for cost-sensitive, low-bandwidth (<1 MHz), single-channel applications where BOM simplicity is prioritized. |
Compared with AD8222ARZ and INA2126UA, the AD8224BCPZ-WP uniquely delivers dual JFET-input channels in one LFCSP package with validated 10 pA bias current, differential output routing, and 4.5–36 V supply flexibility-enabling compact, high-fidelity sensor front-ends unachievable with alternatives.
Availability
AD8224BCPZ-WP 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 guaranteed B-grade parametric compliance.
Supply support for AD8224BCPZ-WP 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 since 1965.
The AD8224 belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for high-accuracy, low-noise, multi-channel signal conditioning in portable and space-constrained measurement systems.
FAQ
What is the maximum operating temperature range for the AD8224BCPZ-WP?
The AD8224BCPZ-WP is characterized for specified performance from −40°C to +85°C and operates reliably up to +125°C. Junction temperature must not exceed 130°C; thermal design should use θJA = 48°C/W when the exposed paddle is soldered to the +VS plane, per the LFCSP CP-16-26 package specification.
Does the AD8224BCPZ-WP support true differential output configuration?
Yes, the AD8224BCPZ-WP supports differential output by using OUT1 and OUT2 as complementary outputs while configuring REF1 and REF2 to opposing reference voltages. This configuration is explicitly detailed in Figure 64 of the datasheet and enables high-noise-immunity signal transmission to differential-input ADCs without external components.
How is gain set on the AD8224BCPZ-WP, and what is the supported range?
Gain for each channel of the AD8224BCPZ-WP is set independently using an external resistor connected between RG1 pins (2 and 3) for Channel 1 or RG2 pins (10 and 11) for Channel 2. Gain follows G = 1 + (49.4 kΩ / RG), supporting precise, stable gains from 1 to 1000 with ≤0.2% gain error (B grade) at G = 10.
Can the AD8224BCPZ-WP operate from a single +5 V supply?
Yes, the AD8224BCPZ-WP operates from a single +5 V supply (VS+ = +5 V, VS− = 0 V), delivering rail-to-rail output swing of 0.25 V to 4.75 V (RL = 2 kΩ) and maintaining full B-grade specifications including 10 pA input bias current and 100 dB CMRR at G = 10. Reference pins (REF1/REF2) must be biased at mid-supply (e.g., 2.5 V) for optimal performance.
What is the purpose of the exposed thermal pad on the AD8224BCPZ-WP package?
The exposed thermal pad on the AD8224BCPZ-WP (CP-16-26 LFCSP) is internally connected to +VS. It may be left unconnected or soldered to the +VS copper plane to reduce thermal resistance from junction to ambient (θJA drops from 86°C/W to 48°C/W), improving power dissipation capability and long-term reliability under continuous 750 µA per amplifier operation.
AD8224BCPZ-WP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad, CSP
- Packaging:
- Tray
- 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-WP FAQ
1.How can I place an order for AD8224BCPZ-WP through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8224BCPZ-WP 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-WP reliable?
The price and inventory of AD8224BCPZ-WP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8224BCPZ-WP is usually 5 days.
3.What payment methods are accepted for AD8224BCPZ-WP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8224BCPZ-WP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8224BCPZ-WP?
AD8224BCPZ-WP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8224BCPZ-WP 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-WP?
For technical support, including AD8224BCPZ-WP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8224BCPZ-WP requirements.
6.How does Aetrix verify that AD8224BCPZ-WP is sourced from the original manufacturer or authorized distributors?
All AD8224BCPZ-WP 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-WP meets industry standards.
7.What is the process for return or replacement of AD8224BCPZ-WP?
All AD8224BCPZ-WP units undergo pre-shipment inspection (PSI). If there is an issue with AD8224BCPZ-WP, 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-WP part is unused and in its original packaging.
Return procedure for AD8224BCPZ-WP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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