My Inquiry
My Account
Analog Devices Inc. AD8223BRMZ
- Part No.:
- AD8223BRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8223BRMZ.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:190
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8223BRMZ from Analog Devices is a single-supply, rail-to-rail output instrumentation amplifier optimized for low-power signal conditioning in precision sensor interfaces. It delivers gain of 5 to 1000 set by one external resistor, supports input common-mode voltage down to 150 mV below negative rail, exhibits 30 nV/√Hz input-referred noise at G = 1000, and draws only 500 μA quiescent current - enabling use in battery-powered medical and industrial data acquisition systems.
For engineers reviewing the AD8223BRMZ datasheet, AD8223BRMZ pinout, AD8223BRMZ application, or AD8223BRMZ equivalent, key selection criteria include its single-resistor gain programming, rail-to-rail output swing on 3 V to 24 V supplies, −150 mV input common-mode range below ground, 500 μA supply current, and 8-lead SOIC package compatibility with standard instrumentation amplifier layouts.
Technical Context
The AD8223BRMZ implements a modified 3-op-amp architecture with PNP input buffers enabling operation with inputs extending 150 mV below the negative supply rail. Its second stage uses an external resistor (RG) across pins 1 and 8 to set gain per G = 5 + (80 kΩ/RG), while the third stage provides fixed ×5 differential amplification and common-mode rejection.
This architecture delivers high CMRR (96 dB typical at G = 100), low input bias current (25 nA max), and rail-to-rail output swing - all while maintaining stable performance across dual (±2 V to ±12 V) and single-supply (3 V to 24 V) configurations without requiring separate level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | 5 to 1000, set by single external resistor - simplifies design and reduces BOM count vs. multi-resistor alternatives. |
| Input Common-Mode Range | Down to (−VS) − 0.15 V - enables direct amplification of thermocouple or bridge signals referenced near ground. |
| Supply Voltage Range | Single: 3 V to 24 V; Dual: ±2 V to ±12 V - supports wide battery and industrial rail flexibility. |
| Quiescent Current | 500 μA max - enables >1-year operation on coin-cell batteries in portable instrumentation. |
| Output Swing | Rail-to-rail on single supply (e.g., 0.01 V to +VS − 0.5 V @ 10 kΩ) - maximizes dynamic range at low voltages. |
| Voltage Noise (1 kHz) | 30 nV/√Hz at G = 1000 - ensures sub-μV resolution in high-gain transducer interfaces. |
| CMRR (DC–60 Hz) | 96 dB typical at G = 100 - rejects power-line interference in noisy industrial environments. |
Pinout & Package
AD8223BRMZ is packaged in an 8-lead SOIC (R) with industry-standard pinout. The package measures 4.9 mm × 3.9 mm × 1.75 mm and features gull-wing leads compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−RG) | Gain resistor terminal | Connects to one end of external RG; sets gain with pin 8 (+RG) - no internal connection when unused. |
| 2 (−IN) | Negative input | Differential input node; accepts signals down to −VS − 0.15 V - critical for low-side sensor interfacing. |
| 3 (+IN) | Positive input | Differential input node; matched impedance and bias current to −IN for optimal CMRR. |
| 4 (−VS) | Negative supply | Ground reference in single-supply mode; −VS rail in dual-supply mode - must be decoupled locally. |
| 5 (REF) | Reference input | Defines output DC offset; drives single-supply ADC mid-rail; requires <5 Ω source impedance for best CMRR. |
| 6 (OUT) | Amplified output | Rail-to-rail voltage output referenced to REF; capable of sourcing/sinking ≥1 mA into 10 kΩ loads. |
| 7 (+VS) | Positive supply | +VS rail in dual-supply mode; VDD in single-supply mode - requires 0.1 μF ceramic + 10 μF tantalum decoupling. |
| 8 (+RG) | Gain resistor terminal | Connects to other end of external RG; completes gain-setting network - open-circuit yields G = 5. |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor gain programming | Eliminates need for precision matched resistor networks - reduces layout complexity and calibration effort. |
| Rail-to-rail output on 3 V supply | Delivers full 0.01 V to 2.5 V swing into 10 kΩ - preserves 99% of ADC input range in 3 V systems. |
| Input common-mode range to −VS − 150 mV | Directly conditions grounded thermocouples or low-side current shunt signals without level-shifting ICs. |
| 500 μA quiescent current | Enables continuous operation in wearable ECG monitors with >12-month battery life on CR2032. |
| 8-lead SOIC pin compatibility | Drop-in replacement for legacy instrumentation amps (e.g., AD620, AD623) without PCB redesign. |
Applications
| Medical Instrumentation | Industrial Transducer Interface |
|---|---|
Use Scenario: Amplifying microvolt-level ECG signals from dry electrodes in portable patient monitors. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing programmable gain and rail-to-rail output for 3.3 V ADC input. Use Value: 30 nV/√Hz noise and 96 dB CMRR suppress 50/60 Hz interference without external notch filters. |
Use Scenario: Conditioning output of 350 Ω strain gauge bridges in load cells for factory automation. IC Role / Device Role / Timing Role: Low-drift, low-power signal conditioner with input range extending below ground to handle bridge imbalance. Use Value: −150 mV input common-mode capability eliminates need for negative bias supply in single-supply PLC modules. |
| Thermocouple Amplification | Low-Power Data Acquisition |
Use Scenario: Cold-junction compensated Type-K thermocouple measurement in HVAC sensor nodes. IC Role / Device Role / Timing Role: High-input-impedance instrumentation amplifier with programmable gain for millivolt-range thermocouple outputs. Use Value: 25 nA max input bias current prevents voltage drop errors across high-impedance thermocouple wires. |
Use Scenario: Battery-powered environmental sensor hub acquiring temperature, pressure, and humidity data. IC Role / Device Role / Timing Role: Ultra-low-quiescent-current signal conditioner enabling multi-channel analog front-end with <10 μA total sleep current. Use Value: 500 μA supply current allows concurrent operation of three AD8223BRMZ channels on a single AA cell for >2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8221ARMZ | Higher precision (75 μV max VOS, 0.3 μV/°C TC), but higher supply current (1.2 mA) and no rail-to-rail output. | Better for lab-grade measurements where accuracy outweighs power budget; unsuitable for 3 V battery systems requiring full output swing. | Select AD8221ARMZ when offset drift and long-term stability are critical, and supply headroom permits non-rail-to-rail output. |
| INA333AIDR | Zero-drift architecture (0.25 μV max VOS), lower noise (12 nV/√Hz), but limited input common-mode range (to V− + 0.1 V). | Superior for DC-coupled precision sensors (e.g., RTDs); cannot interface with signals below ground like thermocouples or shunts. | Select INA333AIDR when ultra-low offset and drift dominate requirements, and input signals remain strictly above negative rail. |
Compared with AD8223BRMZ, AD8221ARMZ trades power efficiency and rail-to-rail output for superior DC accuracy, while INA333AIDR achieves lower offset and noise at the cost of ground-referenced input capability - making AD8223BRMZ uniquely balanced for low-power, below-ground-signal applications.
Availability
AD8223BRMZ is available at Aetrix Electronics and suitable for low-power medical instrumentation, industrial transducer interfaces, thermocouple amplifiers, and battery-operated data acquisition systems requiring stable component supply and long-lifecycle support.
Supply support for AD8223BRMZ 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 AD8223 belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for low-power, single-supply sensor signal conditioning in portable and embedded measurement systems.
FAQ
What is the minimum supply voltage required for AD8223BRMZ operation?
The AD8223BRMZ operates from a single supply as low as +3 V (with −VS = 0 V) or dual supplies as low as ±2 V. At 3 V, it maintains rail-to-rail output swing and specified gain accuracy, making it suitable for coin-cell and Li-ion battery-powered designs where headroom is constrained.
How does the AD8223BRMZ achieve input common-mode voltage below ground?
The AD8223BRMZ uses PNP transistor input buffers in its first stage, allowing input signals to extend 150 mV below the negative supply rail. This architecture enables direct amplification of grounded thermocouples or low-side current shunt signals without external level-shifting circuitry - a key differentiator versus op-amp-based alternatives.
Can AD8223BRMZ be used with a single external resistor to set gain, and what is the formula?
Yes - AD8223BRMZ gain is set by a single external resistor (RG) between pins 1 (−RG) and 8 (+RG), using the formula G = 5 + (80 kΩ / RG). With no resistor installed, the device defaults to G = 5. For example, a 80.6 kΩ resistor yields G ≈ 1000, verified in Table 7 of the datasheet.
What is the maximum output current drive capability of AD8223BRMZ?
The AD8223BRMZ can source or sink ≥1 mA into resistive loads while maintaining rail-to-rail swing, as confirmed by Figure 30 in the datasheet. For loads <10 kΩ, buffering with an op amp (e.g., OP113) is recommended to preserve linearity and settling time performance.
Does AD8223BRMZ require external protection diodes for overvoltage on input pins?
No - AD8223BRMZ includes internal supply-referenced clamping diodes that safely withstand overvoltages up to ±0.3 V beyond the supply rails. For overvoltages exceeding this, external current-limiting resistors (e.g., 1 kΩ) are recommended to restrict diode current to ≤10 mA, as shown in Figure 33 of the datasheet.
AD8223BRMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 200 kHz
- Current - Input Bias:
- 12 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 650µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 24 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
AD8223BRMZ FAQ
1.How can I place an order for AD8223BRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8223BRMZ 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 AD8223BRMZ reliable?
The price and inventory of AD8223BRMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8223BRMZ is usually 5 days.
3.What payment methods are accepted for AD8223BRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8223BRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8223BRMZ?
AD8223BRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8223BRMZ 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 AD8223BRMZ?
For technical support, including AD8223BRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8223BRMZ requirements.
6.How does Aetrix verify that AD8223BRMZ is sourced from the original manufacturer or authorized distributors?
All AD8223BRMZ 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 AD8223BRMZ meets industry standards.
7.What is the process for return or replacement of AD8223BRMZ?
All AD8223BRMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8223BRMZ, 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 AD8223BRMZ part is unused and in its original packaging.
Return procedure for AD8223BRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8223BRMZ Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
