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Analog Devices Inc. AD8506ACBZ-REEL7
- Part No.:
- AD8506ACBZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-UFBGA, WLCSP
- Datasheet:
-
AD8506ACBZ-REEL7.pdf
- Description:
- IC CMOS 2 CIRCUIT 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,585
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Product details
Overview
AD8506ACBZ-REEL7 from Analog Devices is a dual, rail-to-rail input/output, zero-crossover-distortion operational amplifier optimized for ultra-low-power battery-operated systems. It delivers 20 μA maximum supply current per amplifier, 45 nV/√Hz voltage noise at 1 kHz, and 2.5 mV max offset voltage across −40°C to +125°C, enabling precision signal conditioning in pressure sensors and IR thermometers.
For engineers reviewing the AD8506ACBZ-REEL7 datasheet, AD8506ACBZ-REEL7 pinout, AD8506ACBZ-REEL7 application, or AD8506ACBZ-REEL7 equivalent, key selection criteria include its guaranteed 100 dB PSRR, 105 dB typical CMRR, rail-to-rail operation from 1.8 V to 5 V, and dual-channel configuration in an 8-lead MSOP package - all critical for low-voltage sensor front-ends requiring long-term stability without calibration drift.
Technical Context
The AD8506ACBZ-REEL7 employs an on-chip charge pump to eliminate input crossover distortion, enabling true rail-to-rail common-mode input range (0 V to VSY) without performance degradation. This architecture sustains 100 dB PSRR and 105 dB CMRR while operating below 20 μA per amplifier.
It features CMOS input stage with 1 pA typical input bias current, 220 GΩ input resistance, and unity-gain stable design with 95 kHz gain-bandwidth product and 60° phase margin into 1 MΩ//20 pF loads - ensuring robustness in high-impedance sensor interfaces and low-noise transducer amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 20 μA per amplifier max - enables >10-year battery life in coin-cell-powered devices like smoke detectors and wearable biosensors. |
| Input Offset Voltage | 2.5 mV max at 25°C, 3.5 mV max over −40°C to +125°C - supports uncalibrated DC-coupled sensor measurements with <0.1% error at 2.5 V full-scale. |
| Voltage Noise Density | 45 nV/√Hz at 1 kHz - preserves signal integrity in low-level bio-sensor and thermopile amplification where thermal noise dominates. |
| PSRR / CMRR | 100 dB min PSRR, 105 dB typ CMRR - rejects battery voltage sag and PCB ground bounce, eliminating need for external regulation in portable instrumentation. |
| Operating Supply | 1.8 V to 5 V single supply or ±0.9 V to ±2.5 V dual supply - interoperable with Li-ion, alkaline, and coin-cell sources without level-shifting circuitry. |
| Output Swing | Rail-to-rail high/low: VOH ≥ 1.78 V (1.8 V supply), VOL ≤ 5 mV (100 kΩ load) - maximizes dynamic range in 12-bit ADC interfaces with minimal headroom loss. |
| Gain Bandwidth | 95 kHz - sufficient for DC–10 kHz sensor bandwidths (e.g., pulse oximetry, gas detection) while maintaining stability with capacitive loads up to 100 pF. |
Pinout & Package
AD8506ACBZ-REEL7 is packaged in an 8-lead MSOP (RM-8) with exposed pad for thermal enhancement. The package measures 3.0 mm × 3.0 mm × 1.1 mm and is RoHS-compliant and moisture-sensitive level 1 (MSL 1).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives high-impedance loads directly; capable of sourcing/sinking ±4.5 mA short-circuit current. |
| 2 | –IN A | Inverting input of Amplifier A - 1 pA typical bias current enables use with >100 MΩ source impedances (e.g., piezoresistive bridges). |
| 3 | +IN A | Non-inverting input of Amplifier A - rail-to-rail common-mode range (0 V to VSY) eliminates input clipping in single-supply sensor buffers. |
| 4 | V– | Negative supply pin - connects to ground in single-supply configurations; must be decoupled with 0.1 μF ceramic capacitor near pin. |
| 5 | +IN B | Non-inverting input of Amplifier B - independent channel allows dual-sensor conditioning (e.g., reference + active channel in differential thermometry). |
| 6 | –IN B | Inverting input of Amplifier B - matched to Pin 2 for common-mode rejection in differential configurations. |
| 7 | OUT B | Amplifier B output - identical performance to Pin 1; supports independent gain-setting or shared feedback networks. |
| 8 | V+ | Positive supply pin - accepts 1.8 V to 5 V; internal charge pump derives boosted gate drive for zero-crossover input stage. |
Key Features
| Feature | Design Value |
|---|---|
| Zero Input Crossover Distortion | Enabled by on-chip charge pump - maintains linear input behavior across full 0 V to VSY range, eliminating distortion-induced errors in precision DC measurements. |
| Ultra-Low Power Operation | 20 μA per amplifier max - reduces total system quiescent current to <50 μA for dual-channel sensor nodes, extending shelf life of sealed hazard detectors. |
| High PSRR/CMRR | 100 dB PSRR min, 105 dB CMRR typ - suppresses supply ripple and common-mode interference without external filtering, simplifying PCB layout. |
| Rail-to-Rail I/O | Input: 0 V to VSY; Output: within 5 mV of rails (100 kΩ load) - maximizes ADC utilization in 1.8 V–3.3 V microcontroller systems. |
| Wide Temperature Range | Specified from −40°C to +125°C - qualified for automotive cabin sensors, industrial fire alarms, and outdoor environmental monitors. |
Applications
| Pressure and Position Sensors | Bio Sensors |
|---|---|
|
Use Scenario: Amplifying millivolt-level outputs from MEMS pressure transducers in battery-powered tire pressure monitoring systems (TPMS). IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end - one channel buffers reference voltage, the other conditions sensor bridge output. Use Value: 20 μA per amplifier supply current extends TPMS battery life beyond 5 years; rail-to-rail I/O ensures full bridge output range is captured at 3.0 V supply. |
Use Scenario: Signal conditioning for electrochemical glucose sensors in handheld medical meters. IC Role / Device Role / Timing Role: Transimpedance amplifier and reference buffer - converts nanoamp-level current from enzyme reaction into stable voltage for ADC sampling. Use Value: 1 pA typical input bias current prevents measurement drift in high-impedance sensor electrodes; 45 nV/√Hz noise preserves resolution for sub-mg/dL glucose detection. |
| IR Thermometers | Hazard Detectors |
|
Use Scenario: Amplifying thermopile output in non-contact temperature sensors used in smart thermostats and industrial process control. IC Role / Device Role / Timing Role: Low-noise DC-coupled amplifier - conditions microvolt-level thermopile signals while rejecting ambient EMI via high CMRR. Use Value: 105 dB CMRR rejects common-mode noise from switching power supplies; 2.5 mV max offset enables factory calibration without trimming resistors. |
Use Scenario: Smoke, CO, and gas detection circuits in residential alarm systems powered by 9 V alkaline batteries. IC Role / Device Role / Timing Role: Sensor interface and comparator driver - conditions electrochemical sensor output and drives analog-to-digital conversion for alarm logic. Use Value: 1.8 V minimum supply enables operation until battery drops to 1.8 V; zero-crossover distortion prevents false alarms caused by input-stage nonlinearity during low-VSY operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4505-2ARMZ | Same zero-crossover architecture, but 15 μA max supply current and 1.5 mV max offset voltage; offered in same 8-lead MSOP package. | Lower offset and current suit higher-precision medical devices; not qualified for +125°C operation (max +105°C). | Select ADA4505-2ARMZ when tighter offset spec (<1.5 mV) and lower quiescent current are required, and operating temperature stays ≤+105°C. |
| OPA2333AIDR | Zero-drift architecture (chopper-stabilized), 17 μA max supply current, 2 μV max offset, but 1.6 µV/°C drift vs. AD8506's 2.5 µV/°C. | Superior DC accuracy for long-term drift-critical applications; introduces 100 kHz switching noise absent in AD8506's charge-pump design. | Select OPA2333AIDR only if sub-μV offset stability outweighs risk of chopper noise coupling into sensitive analog front-ends. |
Compared with ADA4505-2ARMZ and OPA2333AIDR, AD8506ACBZ-REEL7 provides the widest guaranteed temperature range (−40°C to +125°C), highest PSRR (100 dB min), and lowest noise floor free of switching artifacts - making it optimal for harsh-environment industrial and automotive sensor nodes where reliability trumps marginal DC specs.
Availability
AD8506ACBZ-REEL7 is available at Aetrix Electronics and suitable for pressure sensors, IR thermometers, bio-sensors, and hazard detectors requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AD8506ACBZ-REEL7 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, with R&D and manufacturing facilities worldwide.
The AD8506ACBZ-REEL7 belongs to Analog Devices' zero-crossover-distortion op amp family, engineered specifically for ultra-low-power, high-accuracy sensor signal conditioning in battery-constrained environments - emphasizing PSRR, CMRR, and rail-to-rail fidelity over raw speed.
FAQ
What is the maximum operating temperature range for AD8506ACBZ-REEL7?
The AD8506ACBZ-REEL7 is fully specified from −40°C to +125°C, including all key parameters such as supply current, offset voltage, PSRR, and CMRR. This extended industrial temperature range makes AD8506ACBZ-REEL7 suitable for under-hood automotive sensors, industrial fire alarms, and outdoor environmental monitoring equipment where ambient temperatures exceed +85°C.
Does AD8506ACBZ-REEL7 require external components for zero-crossover operation?
No. AD8506ACBZ-REEL7 integrates an on-chip charge pump that generates an internal boosted voltage to power its input stage - eliminating crossover distortion without external capacitors or clock signals. Unlike chopper-stabilized op amps, AD8506ACBZ-REEL7 produces no switching noise, preserving signal integrity in sensitive analog front-ends.
Can AD8506ACBZ-REEL7 drive capacitive loads up to 100 pF without instability?
Yes. AD8506ACBZ-REEL7 is unity-gain stable and maintains 60° phase margin with 1 MΩ//20 pF loads. Test data (Figure 33 and Figure 36) confirms stable small-signal transient response with up to 600 pF capacitive load at 1.8 V and 5 V supplies - enabling direct connection to ADC input capacitors and long PCB traces without isolation resistors.
What is the typical input bias current of AD8506ACBZ-REEL7 at 125°C?
The typical input bias current of AD8506ACBZ-REEL7 is 1 pA at 25°C and remains below 600 pA across −40°C to +125°C. This ultra-low bias current enables use with high-impedance sources such as piezoresistive pressure sensors, pH electrodes, and photodiode transimpedance stages without significant input error voltage.
Is AD8506ACBZ-REEL7 pin-compatible with other dual op amps in MSOP-8 packages?
No. AD8506ACBZ-REEL7 uses a proprietary pinout (OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, V+) that differs from industry-standard dual op amp configurations like the LM358 or TLV2462. PCB layout must follow the exact pin mapping shown in Figure 3 of the AD8505/AD8506/AD8508 datasheet Rev. F.
AD8506ACBZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.013V/µs
- Gain Bandwidth Product:
- 95 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 15µA (x2 Channels)
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WLCSP (1.42x1.42)
AD8506ACBZ-REEL7 FAQ
1.How can I place an order for AD8506ACBZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8506ACBZ-REEL7 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 AD8506ACBZ-REEL7 reliable?
The price and inventory of AD8506ACBZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8506ACBZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8506ACBZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8506ACBZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8506ACBZ-REEL7?
AD8506ACBZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8506ACBZ-REEL7 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 AD8506ACBZ-REEL7?
For technical support, including AD8506ACBZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8506ACBZ-REEL7 requirements.
6.How does Aetrix verify that AD8506ACBZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8506ACBZ-REEL7 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 AD8506ACBZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8506ACBZ-REEL7?
All AD8506ACBZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8506ACBZ-REEL7, 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 AD8506ACBZ-REEL7 part is unused and in its original packaging.
Return procedure for AD8506ACBZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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