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Analog Devices Inc. AD8608ARZ-REEL
- Part No.:
- AD8608ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8608ARZ-REEL.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,594
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Product details
Overview
AD8608ARZ-REEL from Analog Devices is a quad, rail-to-rail input/output precision CMOS operational amplifier optimized for low-noise, low-offset, and single-supply operation from 2.7 V to 5.5 V. It delivers 65 µV max offset voltage, 1 pA max input bias current, 8 nV/√Hz voltage noise density at 1 kHz, 10 MHz unity-gain bandwidth, and operates across −40°C to +125°C - enabling high-accuracy photodiode amplification and battery-powered sensor signal conditioning.
For engineers reviewing the AD8608ARZ-REEL datasheet, AD8608ARZ-REEL pinout, AD8608ARZ-REEL application, or AD8608ARZ-REEL equivalent, key selection criteria include guaranteed rail-to-rail I/O swing at 2.7 V supply, sub-100 µV offset over temperature, ultra-low input bias current for high-Z sensor interfaces, and TSSOP-14 packaging compatible with industrial-grade PCB assembly.
Technical Context
The AD8608ARZ-REEL implements a precision CMOS input stage with DigiTrim® laserless trimming, achieving stable offset and drift without laser calibration. Its fully differential input architecture supports common-mode voltages from rail to rail, and its unity-gain-stable compensation enables direct use in gain-of-one configurations without external compensation.
Designed for single-supply systems, it maintains rail-to-rail output swing (within 20 mV of rails at 1 mA load) and exhibits no phase reversal even when inputs exceed supply by >2 V. The quad topology allows independent channel operation with <−70 dB channel separation at 10 kHz, supporting multi-channel instrumentation without crosstalk-induced measurement error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | Max 65 µV at 25°C; ensures ≤0.013% gain error in 5 V full-scale 16-bit ADC front-end |
| Input Bias Current | Max 1 pA at 25°C; enables use with >1 GΩ source impedances without significant DC error |
| Voltage Noise Density | 8 nV/√Hz at 1 kHz; contributes <0.4 µV RMS integrated noise in 100 kHz bandwidth |
| Unity-Gain Bandwidth | 10 MHz; supports stable closed-loop operation up to 100 kHz with 10× gain margin |
| Supply Range | 2.7 V to 5.5 V; allows direct interface with Li-ion, 3.3 V logic, and dual-supply-derived rails |
| Operating Temperature | −40°C to +125°C; qualified for under-hood automotive and industrial control environments |
| Output Drive | ±80 mA short-circuit current; drives 2 kΩ loads while maintaining rail-to-rail swing |
Pinout & Package
The AD8608ARZ-REEL is housed in a 14-lead narrow SOIC (SOIC_N) surface-mount package with standard 1.27 mm pitch and 8.65 mm × 3.9 mm footprint. Pin 1 is marked by a beveled corner or dot; device orientation follows JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | −IN A | Inverting input of Channel A; accepts differential signals up to rail-to-rail common-mode range |
| 2 | +IN A | Noninverting input of Channel A; matched to Pin 1 for optimal CMRR |
| 3 | V− | Negative supply rail; tied to ground in single-supply configurations |
| 4 | OUT B | Output of Channel B; rail-to-rail capable with <20 mV saturation at 1 mA load |
| 5 | −IN B | Inverting input of Channel B; electrically isolated from other channels |
| 6 | +IN B | Noninverting input of Channel B; low input capacitance (2.6 pF) minimizes high-frequency peaking |
| 7 | V+ | Positive supply rail; accepts 2.7 V to 5.5 V with 80 dB PSRR at DC |
| 8 | OUT A | Output of Channel A; shares thermal path with Pins 1–3 for consistent quiescent behavior |
| 9 | −IN D | Inverting input of Channel D; layout symmetry reduces inter-channel coupling |
| 10 | +IN D | Noninverting input of Channel D; identical input structure to Pins 1 and 5 |
| 11 | V− | Shared negative supply; must be low-impedance for all four amplifiers |
| 12 | OUT D | Output of Channel D; specified for ±80 mA short-circuit current |
| 13 | −IN C | Inverting input of Channel C; referenced to same V− as Pins 3 and 11 |
| 14 | +IN C | Noninverting input of Channel C; supports DC-coupled sensor interfaces |
Key Features
| Feature | Design Value |
|---|---|
| DigiTrim® trimming | Eliminates laser trimming; achieves 65 µV max offset and 4.5 µV/°C max drift without post-package calibration |
| Rail-to-rail I/O | Inputs accept 0 V to V+ common-mode range; outputs swing within 20 mV of rails at 1 mA load |
| No phase reversal | Operates safely with inputs exceeding V+ or below V− by >2 V - prevents system lockup in overvoltage conditions |
| Low 1/f noise | 2.3 µV p-p (0.1 Hz to 10 Hz); critical for precision DC-coupled sensor amplification |
| High CMRR | 100 dB typical at DC; rejects power supply ripple and shared-ground noise in multi-amplifier layouts |
Applications
| Photodiode Amplification | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Converting weak current from silicon photodiodes into stable voltage for optical smoke detectors or pulse oximeters. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 pA input bias current minimizing dark-current error and 8 nV/√Hz noise preserving SNR. Use Value: Enables detection of sub-nA photocurrents with <10 µV output error, extending dynamic range in portable medical sensors. | Use Scenario: Signal conditioning front-end for handheld multimeters or portable gas analyzers powered by two AA cells (2.7 V min). IC Role / Device Role / Timing Role: Precision buffer and gain stage operating down to 2.7 V supply with rail-to-rail output swing. Use Value: Maintains full 16-bit ADC utilization across battery discharge curve without supply rail translation circuitry. |
| Multipole Active Filters | Barcode Scanner Signal Chain |
Use Scenario: Implementing 4th-order low-pass anti-aliasing filters in data acquisition modules requiring <0.01% THD+N. IC Role / Device Role / Timing Role: Quad op-amp providing matched gain blocks with 10 MHz GBP and 65° phase margin for stable filter response. Use Value: Achieves <−86 dB THD+N at 1 kHz, eliminating harmonic distortion that would corrupt FFT-based spectral analysis. | Use Scenario: Amplifying low-amplitude analog signals from linear CCD arrays in handheld barcode scanners. IC Role / Device Role / Timing Role: High-speed transimpedance and post-amplifier stage with 10 MHz bandwidth and fast settling (<1 µs to 0.01%). Use Value: Supports >300 lines/sec scanning speed while preserving edge fidelity for reliable 1D/2D code decoding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP4177ARZ | Lower offset (25 µV max), higher supply current (500 µA/amplifier), wider supply range (±5 V to ±15 V) | Better for dual-supply industrial PLC analog I/O; less suitable for 2.7 V battery operation | Select OP4177ARZ when absolute offset accuracy outweighs supply voltage flexibility and power budget |
| TSV914IQ4T | Higher input bias current (10 pA), lower bandwidth (8 MHz), smaller 14-pin TSSOP package | Optimized for cost-sensitive consumer electronics; lacks extended temperature qualification | Select TSV914IQ4T only for commercial-temp designs where 1 pA bias and 125°C operation are not required |
Compared with OP4177ARZ and TSV914IQ4T, AD8608ARZ-REEL uniquely balances ultra-low input bias current, rail-to-rail operation at 2.7 V, and extended temperature range - making it the only option qualified for high-impedance sensor interfaces in automotive and industrial edge devices.
Availability
AD8608ARZ-REEL is available at Aetrix Electronics and suitable for photodiode amplification, battery-powered instrumentation, and multipole active filters requiring stable component supply across automotive, industrial, and medical design cycles.
Supply support for AD8608ARZ-REEL 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 AD860x family was designed specifically for precision, low-power, single-supply signal conditioning in space-constrained, high-reliability applications - including optical sensing, portable test equipment, and industrial process control.
FAQ
What is the maximum input common-mode voltage range for AD8608ARZ-REEL?
The AD8608ARZ-REEL supports rail-to-rail input common-mode voltage from V− to V+, i.e., 0 V to 5.5 V when operated at 5.5 V supply. This is confirmed in the General Description and Electrical Specifications sections of Rev. O datasheet, where input voltage range is explicitly listed as 0 V to VS across all conditions. Operation beyond this range risks phase reversal or damage unless external protection is added.
Does AD8608ARZ-REEL require external compensation for unity-gain stability?
No, AD8608ARZ-REEL is internally compensated and unity-gain stable, as stated in both the FEATURES and GENERAL DESCRIPTION sections. The datasheet confirms "Unity gain stable" and shows ≥65° phase margin in Figure 15 (5 V) and Figure 37 (2.7 V), validating stable operation with gain = 1 and capacitive loads ≤20 pF without added components.
What is the thermal resistance θJA for AD8608ARZ-REEL in its SOIC_N package?
The junction-to-ambient thermal resistance (θJA) for AD8608ARZ-REEL in the 14-lead narrow SOIC package is 105°C/W, per Table 4 on page 8 of Rev. O datasheet. This value assumes worst-case PCB mounting conditions and is used to calculate maximum allowable power dissipation versus ambient temperature.
Can AD8608ARZ-REEL drive a 10 kΩ load while maintaining rail-to-rail output swing?
Yes - at 1 mA load (equivalent to 10 kΩ at 10 V output), AD8608ARZ-REEL delivers VOH ≥ 4.96 V and VOL ≤ 40 mV with 5 V supply, per Table 1. At 2.7 V supply, VOH ≥ 2.6 V and VOL ≤ 40 mV under same 1 mA condition (Table 2), confirming full rail-to-rail capability across its entire supply range.
Is AD8608ARZ-REEL qualified for automotive applications?
AD8608ARZ-REEL is specified over −40°C to +125°C and meets extended industrial temperature requirements, but it is not AEC-Q200 qualified or automotive grade per Analog Devices' official ordering guide. It is suitable for under-hood industrial controls and non-safety-critical automotive subsystems, but not for ASIL-B/C safety functions without additional system-level validation.
AD8608ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- DigiTrim®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 80 µV
- Current - Supply:
- 1mA (x4 Channels)
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
AD8608ARZ-REEL FAQ
1.How can I place an order for AD8608ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8608ARZ-REEL 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 AD8608ARZ-REEL reliable?
The price and inventory of AD8608ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8608ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8608ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8608ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8608ARZ-REEL?
AD8608ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8608ARZ-REEL 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 AD8608ARZ-REEL?
For technical support, including AD8608ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8608ARZ-REEL requirements.
6.How does Aetrix verify that AD8608ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8608ARZ-REEL 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 AD8608ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8608ARZ-REEL?
All AD8608ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8608ARZ-REEL, 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 AD8608ARZ-REEL part is unused and in its original packaging.
Return procedure for AD8608ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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