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Analog Devices Inc. AD8222ACPZ-R7
- Part No.:
- AD8222ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-WQFN Exposed Pad, CSP
- Datasheet:
-
AD8222ACPZ-R7.pdf
- Description:
- IC INST AMP 2 CIRCUIT 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:11,249
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Product details
Overview
AD8222ACPZ-R7 from Analog Devices is a dual-channel, precision instrumentation amplifier in a 4 mm × 4 mm LFCSP package, delivering 126 dB minimum CMRR at G = 100, 8 nV/√Hz input voltage noise at 1 kHz, and 60 µV max input offset voltage (B grade). It operates from ±2.3 V to ±18 V supplies, draws ≤2.2 mA total quiescent current, and targets high-accuracy sensor signal conditioning in multichannel medical and industrial systems.
For engineers reviewing the AD8222ACPZ-R7 datasheet, AD8222ACPZ-R7 pinout, AD8222ACPZ-R7 application, or AD8222ACPZ-R7 equivalent, key selection criteria include dual-channel density in compact LFCSP, resistor-set gain (G = 1–10,000), differential output capability for ADC driving, and guaranteed −40°C to +85°C industrial operation with low drift.
Technical Context
The AD8222ACPZ-R7 implements a classic 3-op-amp architecture with current-feedback input stages, enabling bandwidth increase with gain-e.g., 140 kHz at G = 100 versus 1200 kHz at G = 1. Its reference terminals (REF1/REF2) allow output level-shifting, and internal ESD protection limits REF voltage to within ±0.3 V of supply rails.
CMRR remains ≥80 dB up to 4 kHz at G = 1, supported by <0.07 µV/V/°C drift; input bias current is ≤1.0 nA (B grade) with 100 GΩ||2 pF input impedance. The device supports both single-ended and differential output configurations, with dedicated RG pins per channel for independent gain setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | G = 1 to 10,000 set by single external resistor per channel; enables flexible scaling without redesign. |
| CMRR (G = 100) | ≥126 dB min; rejects line harmonics and wideband interference in noisy industrial environments. |
| Input Offset Voltage | ≤60 µV (B grade); ensures ≤0.6 mV error at G = 100, critical for sub-mV sensor signals. |
| Input Voltage Noise | 8 nV/√Hz @ 1 kHz; preserves SNR in low-level bridge and ECG front-ends. |
| Supply Range | ±2.3 V to ±18 V; supports legacy ±15 V rails and low-voltage ±2.3 V systems. |
| Quiescent Current | ≤1.1 mA per amplifier; allows dual-channel operation under 2.2 mA total for power-sensitive designs. |
| Bandwidth (G = 100) | 140 kHz; sufficient for 100-sample/s, 16-bit data acquisition with margin. |
Pinout & Package
The AD8222ACPZ-R7 uses a 16-lead LFCSP (CP-16-19) package without thermal pad, measuring 4 mm × 4 mm. The exposed pad is internally connected to −VS and must be soldered to the PCB's negative supply plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| −IN1, −IN2 | Negative input for Channel 1 and 2 | Differential input nodes; high common-mode rejection requires matched trace lengths. |
| +IN1, +IN2 | Positive input for Channel 1 and 2 | Accepts sensor signals up to ±(VS − 1.9 V); supports rail-to-rail common-mode range. |
| RG1, RG2 | Gain-setting resistor terminals (x2 per channel) | Connect external resistor between these pins to set gain; open-circuit = G = 1. |
| REF1, REF2 | Reference inputs for output level-shift | Drive with low-impedance source (<1 Ω) to avoid CMRR degradation; max swing = −VS to +VS. |
| OUT1, OUT2 | Single-ended outputs | Capable of ±(VS − 1.2 V) swing into 10 kΩ; supports direct connection to SAR ADC inputs. |
| +VS, −VS | Power supply connections | +VS (Pins 5, 16); −VS (Pins 8, 13); decoupling required within 1 cm of each pair. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel integration | Two matched instrumentation amplifiers in one 4 mm × 4 mm LFCSP-doubles channel density vs. discrete solutions without performance trade-off. |
| Differential output mode | Configurable as single-channel differential output (via internal routing) for noise-immune transmission to differential-input ADCs. |
| Adjustable common-mode output | REF1/REF2 pins enable precise DC offset control-critical for driving unipolar-input ADCs from bipolar sensor signals. |
| High DC accuracy (B grade) | 60 µV max input offset + 0.3 µV/°C drift ensures stable baseline in temperature-varying industrial enclosures. |
| Low-noise, low-drift PSRR | 130 dB min PSRR at G = 100 reduces sensitivity to supply ripple, easing LDO or filter design in mixed-signal systems. |
Applications
| ECG Signal Conditioning | Wheatstone Bridge Readout |
|---|---|
Use Scenario: Amplifying microvolt-level differential signals from electrode pairs in 12-lead ECG systems with >100 dB common-mode interference rejection. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier providing simultaneous lead I and lead II acquisition with matched gain and offset. Use Value: 0.25 µVp-p (0.1 Hz–10 Hz) RTI noise and 126 dB CMRR at G = 100 preserve diagnostic fidelity without aggressive analog filtering. | Use Scenario: Reading strain-gauge outputs in load cells and pressure transducers where excitation voltage drift and thermal EMFs dominate error budget. IC Role / Device Role / Timing Role: Precision front-end amplifier converting bridge mV differentials into robust 0–5 V or ±10 V ADC inputs. Use Value: 60 µV max input offset and 0.3 µV/°C drift minimize zero-point drift over −40°C to +85°C ambient, reducing calibration frequency. |
| Industrial Process Control | Remote Sensor Interface |
Use Scenario: Monitoring multiple thermocouple or RTD channels in PLC analog input modules requiring galvanic isolation and high channel count. IC Role / Device Role / Timing Role: Dual-channel signal conditioner per module slot, enabling two isolated sensor inputs per IC footprint. Use Value: 4 mm × 4 mm LFCSP package allows 2× higher channel density than discrete dual-inamp solutions, lowering BOM and layout cost. | Use Scenario: Transmitting amplified sensor data over long cables (e.g., 10+ meters) in factory automation, where EMI couples into single-ended lines. IC Role / Device Role / Timing Role: Configured in differential-output mode to drive twisted-pair cabling with common-mode noise rejection. Use Value: Differential output configuration provides >80 dB noise immunity up to 100 kHz, eliminating need for external line drivers or transformers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8221ARZ | Single-channel, same architecture and specs; no dual-channel integration. | Requires two units for dual-sensor systems; larger PCB area and higher component count. | Select AD8221ARZ only when single-channel operation suffices or board space permits duplication. |
| INA2126UA | Single-supply only (2.7–36 V); lower CMRR (100 dB typ at G = 100); higher input offset (150 µV max). | Targeted at cost-sensitive industrial sensors; lacks dual-channel and differential output modes. | Choose INA2126UA for single-supply, non-critical accuracy applications where dual-channel density is unnecessary. |
Compared with AD8221ARZ, AD8222ACPZ-R7 delivers dual-channel functionality in identical footprint-reducing layout complexity and inter-channel mismatch. Versus INA2126UA, it offers superior DC precision, dual-channel integration, and flexible supply support, justifying use in medical-grade and high-channel-count industrial DAQ.
Availability
AD8222ACPZ-R7 is available at Aetrix Electronics and suitable for ECG monitoring systems, industrial process controllers, and Wheatstone bridge sensor interfaces requiring stable component supply across multi-year production cycles.
Supply support for AD8222ACPZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD8222ACPZ-R7 belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for high-fidelity, multichannel sensor signal conditioning in medical diagnostics and industrial measurement equipment.
FAQ
What is the maximum operating temperature range for the AD8222ACPZ-R7?
The AD8222ACPZ-R7 is fully specified over the industrial temperature range of −40°C to +85°C. It maintains operational capability up to +125°C, though parametric performance (e.g., offset drift, CMRR) is not guaranteed beyond +85°C. For designs targeting extended temperature operation, thermal derating and validation per the Typical Performance Characteristics section are recommended. The AD8222ACPZ-R7's LFCSP package supports reliable thermal dissipation in enclosed enclosures.
Can the AD8222ACPZ-R7 be configured for differential output, and how is it implemented?
Yes, the AD8222ACPZ-R7 can be configured as a single-channel differential output instrumentation amplifier using internal routing-described in the Applications Information section of its datasheet. This requires connecting OUT1 and OUT2 as complementary outputs while grounding one input pair and using the other for signal. The configuration delivers high noise immunity for remote sensor links and direct interfacing to differential-input ADCs. The AD8222ACPZ-R7 does not require external components for this mode, unlike discrete op-amp solutions.
What is the purpose of the REF1 and REF2 pins on the AD8222ACPZ-R7?
The REF1 and REF2 pins on the AD8222ACPZ-R7 set the output common-mode voltage for each channel independently. When grounded, outputs center at 0 V; when biased to a DC voltage (e.g., 2.5 V), they level-shift accordingly-enabling seamless interface to single-supply ADCs. These pins are ESD-protected and must remain within ±0.3 V of the supply rails. Source impedance must be <1 Ω to prevent CMRR degradation due to internal 10 kΩ reference path imbalance.
How does gain selection work on the AD8222ACPZ-R7, and what resistor tolerance is recommended?
Gain on the AD8222ACPZ-R7 is set by an external resistor (RG) connected across the RG1 or RG2 pins per channel, using the formula G = 1 + 49.4 kΩ/RG. For example, 499 Ω yields G = 100. Analog Devices recommends 0.1% tolerance, low-TCR (<25 ppm/°C) metal-film resistors to maintain system accuracy-since RG tolerance and drift directly add to the AD8222ACPZ-R7's specified gain error (0.15% max at G = 100).
Is the AD8222ACPZ-R7 RoHS compliant and halogen-free?
Yes, the AD8222ACPZ-R7 is fully RoHS compliant and halogen-free, as confirmed in the official Analog Devices datasheet Rev. B. It meets JEDEC J-STD-020 moisture sensitivity level (MSL) 3 and is qualified for lead-free reflow soldering per IPC/JEDEC J-STD-020. The CP-16-19 LFCSP package contains no intentionally added halogens and complies with IEC 61249-2-21 standards.
AD8222ACPZ-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:
- -
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 7 MHz
- -3db Bandwidth:
- 1.2 MHz
- Current - Input Bias:
- 500 pA
- Voltage - Input Offset:
- 120 µV
- Current - Supply:
- 900µA (x2 Channels)
- Current - Output / Channel:
- 18 mA
- Voltage - Supply Span (Min):
- 4.6 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)
AD8222ACPZ-R7 FAQ
1.How can I place an order for AD8222ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8222ACPZ-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 AD8222ACPZ-R7 reliable?
The price and inventory of AD8222ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8222ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8222ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8222ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8222ACPZ-R7?
AD8222ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8222ACPZ-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 AD8222ACPZ-R7?
For technical support, including AD8222ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8222ACPZ-R7 requirements.
6.How does Aetrix verify that AD8222ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8222ACPZ-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 AD8222ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8222ACPZ-R7?
All AD8222ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8222ACPZ-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 AD8222ACPZ-R7 part is unused and in its original packaging.
Return procedure for AD8222ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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