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Analog Devices Inc. AD8222BCPZ-R7
- Part No.:
- AD8222BCPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-WQFN Exposed Pad, CSP
- Datasheet:
-
AD8222BCPZ-R7.pdf
- Description:
- IC INST AMP 2 CIRCUIT 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,315
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Product details
Overview
AD8222BCPZ-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 serves as the front-end signal conditioner for low-level differential sensors in high-accuracy industrial and medical systems.
For engineers reviewing the AD8222BCPZ-R7 datasheet, AD8222BCPZ-R7 pinout, AD8222BCPZ-R7 application, or AD8222BCPZ-R7 equivalent, key selection considerations include dual-channel density in minimal board area, resistor-set gain (G = 1 to 10,000), differential output capability for ADC driving, and guaranteed −40°C to +85°C industrial operation with ±2.3 V to ±18 V supply support.
Technical Context
The AD8222BCPZ-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 15 kHz at G = 1000. Its reference terminals (REF1/REF2) allow independent output level-shifting per channel, supporting single-supply ADC interfacing without external level-shift circuitry.
Each channel features matched input bias current paths and integrated ESD protection on REF pins. The device maintains ≥80 dB CMRR up to 4 kHz at G = 1 and exhibits only 0.07 µV/V/°C CMRR drift over temperature-critical for stable rejection of line harmonics and wideband interference in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | G = 1 to 10,000 set by single external resistor per channel; enables flexible sensor scaling without redesign. |
| CMRR (G = 100) | ≥126 dB min; ensures >1 million-fold rejection of common-mode noise from bridge sensors or long cables. |
| Input Offset Voltage (B) | ≤60 µV max; reduces calibration burden in precision strain-gage or ECG front-ends. |
| Input Voltage Noise | 8 nV/√Hz @ 1 kHz; preserves signal integrity for microvolt-level bio-sensor outputs. |
| Supply Range | ±2.3 V to ±18 V; supports both low-voltage portable designs and high-dynamic-range industrial rails. |
| Quiescent Current | 1.1 mA per amplifier max; enables dual-channel precision amplification within tight power budgets. |
| Bandwidth (G = 100) | 140 kHz; sufficient for full-wave rectified 50/60 Hz biomedical signals and fast process control loops. |
| Settling Time | 13 µs to 0.001% for 10 V step; meets timing requirements of 16-bit+ SAR ADCs with minimal acquisition delay. |
Pinout & Package
The AD8222BCPZ-R7 is housed in a 16-lead LFCSP (CP-16-19) with exposed pad connected to −VS. This RoHS-compliant, lead-free package measures 4 mm × 4 mm × 0.85 mm and supports high-density multichannel PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| −IN1, −IN2 | Negative input for Channel 1/2 | Differential input node; requires matched trace lengths and impedance for optimal CMRR. |
| +IN1, +IN2 | Positive input for Channel 1/2 | High-impedance (>100 GΩ) input; accepts direct connection to Wheatstone bridge outputs. |
| RG1, RG2 | Gain-setting resistor terminals | Connect external resistor between these pins to set gain; open-circuit defaults to G = 1. |
| REF1, REF2 | Reference input per channel | DC level-shift point for output; must be driven ≤ ±0.3 V beyond supply rails to avoid ESD diode conduction. |
| OUT1, OUT2 | Single-ended output per channel | Capable of rail-to-rail swing (e.g., ±13.8 V @ ±15 V supplies); drives 2 kΩ loads directly. |
| +VS, −VS | Power supply rails | Shared across both amplifiers; −VS connects internally to exposed thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel integration | Two matched instrumentation amps in one 4 mm × 4 mm LFCSP-doubles channel density vs. discrete solutions with no performance trade-off. |
| Differential output mode | Configurable single-channel differential output (via internal routing) for noise-immune transmission to differential-input ADCs. |
| Adjustable common-mode output | Independent REF1/REF2 pins enable per-channel DC offset control-eliminates need for external op-amp level shifters. |
| High CMRR over frequency | ≥80 dB CMRR maintained to 4 kHz at G = 1-reduces analog filter complexity for 50/60 Hz line-noise rejection. |
| Low TC input offset | 0.3 µV/°C max input offset drift (B grade)-minimizes calibration drift across industrial temperature range. |
| Robust supply operation | Specified from ±2.3 V to ±18 V; supports battery-powered portables and high-voltage industrial signal chains. |
Applications
| ECG Signal Conditioning | Industrial Bridge Sensor Interface |
|---|---|
Use Scenario: Amplifying microvolt-level differential signals from electrode pairs in 12-lead ECG systems with high common-mode interference from power lines and EM fields. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier providing simultaneous, isolated amplification of limb leads with matched gain and offset characteristics. Use Value: 126 dB CMRR at G = 100 and 0.25 µV p-p 0.1 Hz–10 Hz noise ensure diagnostic-grade ST-segment resolution without aggressive digital filtering. | Use Scenario: Reading resistance changes in 350 Ω or 1 kΩ Wheatstone bridge configurations used in pressure transducers and load cells. IC Role / Device Role / Timing Role: Precision front-end amplifier converting bridge mV outputs into robust, amplified differential or single-ended signals for ADC digitization. Use Value: 60 µV max input offset and 0.3 µV/°C drift minimize zero-error drift over temperature, reducing recalibration frequency in factory automation. |
| Differential ADC Driving | Remote Sensor Signal Transmission |
Use Scenario: Driving the differential inputs of 16-bit+ SAR or sigma-delta ADCs (e.g., AD768x, AD7768) in data acquisition modules. IC Role / Device Role / Timing Role: Configured in differential-output mode to deliver balanced, low-impedance signals with high PSRR and CMRR. Use Value: Differential output reduces even-order distortion and improves SNR by >3 dB compared to single-ended drive-critical for 90+ dB ENOB systems. | Use Scenario: Transmitting conditioned sensor signals over 10–100 m twisted-pair cables in factory floor or building management systems. IC Role / Device Role / Timing Role: Dual-channel amplifier with differential output option acting as noise-immune transmitter stage before cable driver or isolation barrier. Use Value: 140 kHz bandwidth at G = 100 and 8 nV/√Hz noise preserve signal fidelity over long runs where capacitive loading and EMI dominate. |
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 pinout per channel; lacks second amplifier and REF2 pin. | Suitable only for single-sensor systems; requires two devices for dual-channel needs-increasing board area and cost. | Select AD8221ARZ when only one high-precision channel is needed and space allows separate placement. |
| INA2126UA | Single-supply only (2.7–36 V), lower CMRR (100 dB @ G = 100), higher input offset (150 µV), no differential output mode. | Targeted at cost-sensitive industrial monitoring-not suitable for low-noise medical or high-accuracy metrology. | Choose INA2126UA for non-critical, single-rail applications where budget constraints outweigh precision requirements. |
Compared with AD8221ARZ, AD8222BCPZ-R7 delivers true dual-channel integration in half the footprint; versus INA2126UA, it provides superior noise, CMRR, and dual-supply flexibility essential for high-fidelity sensor conditioning.
Availability
AD8222BCPZ-R7 is available at Aetrix Electronics and suitable for ECG instrumentation, industrial bridge sensor interfaces, and differential ADC driving requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AD8222BCPZ-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 Wilmington, MA.
The AD8222BCPZ-R7 belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for high-accuracy, low-noise signal extraction from weak differential sources in medical, test, and industrial measurement systems.
FAQ
What is the maximum gain achievable with AD8222BCPZ-R7?
The AD8222BCPZ-R7 supports gains from 1 to 10,000, set by a single external resistor per channel using the formula G = 1 + 49.4 kΩ/RG. For G = 10,000, RG = 4.94 Ω is required; however, practical implementation uses standard 1% resistors down to 49.9 Ω (G ≈ 991), with layout and resistor tolerance dominating accuracy at highest gains. AD8222BCPZ-R7 maintains specified performance across this full range.
Can AD8222BCPZ-R7 operate from a single supply?
Yes, AD8222BCPZ-R7 operates on single supplies from +4.6 V to +36 V (i.e., VS = +4.6 V to +36 V, with −VS grounded). Its input common-mode range extends to within 1.9 V of either rail, and output swings to within 1.1 V–1.6 V of the rails depending on load and gain. Reference pins (REF1/REF2) must be biased within the supply range to maintain proper output level-shifting. AD8222BCPZ-R7's dual-supply flexibility simplifies design reuse across platforms.
Does AD8222BCPZ-R7 support differential output configuration?
Yes, AD8222BCPZ-R7 can be configured as a single-channel differential output instrumentation amplifier using internal routing-described in the Applications Information section of its datasheet. In this mode, one channel drives OUT1 while the other drives an inverted signal to OUT2, enabling high-noise-immunity transmission to differential-input ADCs. AD8222BCPZ-R7 does not require external components for this function, and output balance is specified to <0.1 dB up to 10 kHz.
What is the thermal pad connection requirement for AD8222BCPZ-R7?
The AD8222BCPZ-R7 (CP-16-19 variant) features an exposed pad internally connected to −VS. Per the datasheet, this pad must be soldered to a PCB copper area tied to the −VS net to ensure proper thermal dissipation and electrical stability. Failure to connect the pad may cause increased junction temperature, degraded PSRR, and potential parametric shift. AD8222BCPZ-R7's thermal resistance (θJA) is 86°C/W with proper pad connection on a 4-layer JEDEC board.
How does AD8222BCPZ-R7 handle input overvoltage conditions?
AD8222BCPZ-R7 specifies absolute maximum input voltage as ±VS, with differential input voltage also limited to ±VS. Input pins include ESD protection diodes to ±VS rails; however, sustained overvoltage beyond ±VS + 0.3 V forward-biases these diodes and risks damage or latch-up. External series resistors (e.g., 10 kΩ) and clamping diodes are recommended for field-connected sensors. AD8222BCPZ-R7's 100 GΩ input impedance remains intact under normal operation, preserving source loading integrity.
AD8222BCPZ-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:
- 200 pA
- Voltage - Input Offset:
- 60 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)
AD8222BCPZ-R7 FAQ
1.How can I place an order for AD8222BCPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8222BCPZ-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 AD8222BCPZ-R7 reliable?
The price and inventory of AD8222BCPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8222BCPZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8222BCPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8222BCPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8222BCPZ-R7?
AD8222BCPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8222BCPZ-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 AD8222BCPZ-R7?
For technical support, including AD8222BCPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8222BCPZ-R7 requirements.
6.How does Aetrix verify that AD8222BCPZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8222BCPZ-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 AD8222BCPZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8222BCPZ-R7?
All AD8222BCPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8222BCPZ-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 AD8222BCPZ-R7 part is unused and in its original packaging.
Return procedure for AD8222BCPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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