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Analog Devices Inc. AD8604DRUZ
- Part No.:
- AD8604DRUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD8604DRUZ.pdf
- Description:
- IC CMOS 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:379
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Product details
Overview
AD8604DRUZ from Analog Devices is a quad, rail-to-rail input/output precision CMOS operational amplifier optimized for single-supply operation from 2.7 V to 5.5 V. It delivers 8 MHz gain bandwidth, 5 V/µs slew rate, and maximum input offset voltage of 600 µV (A grade) across −40°C to +125°C, enabling high-accuracy signal conditioning in battery-powered instrumentation and sensor interfaces.
For engineers reviewing the AD8604DRUZ datasheet, AD8604DRUZ pinout, AD8604DRUZ application, or AD8604DRUZ equivalent, this page provides verified technical context, package-specific pin functions, real-world use cases in current sensing and audio buffering, and validated alternative options for design continuity.
Technical Context
The AD8604DRUZ employs Analog Devices' DigiTrim® post-package trimming to achieve low offset without laser calibration, ensuring stability across mechanical stress and temperature. Its dual-input-stage architecture-parallel NMOS and PMOS differential pairs-enables true rail-to-rail common-mode input range (0 V to VS) and seamless transition between input stages.
Output stage uses complementary NMOS/PMOS common-source configuration for rail-to-rail swing; at 1 mA load, output reaches within 20 mV of VS and 15 mV of V–. Open-loop gain is 80 dB typical (RL = 2 kΩ), with phase margin of 55° and unity-gain stability confirmed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 8.4 MHz - supports stable closed-loop operation up to ~1 MHz at G = 10 without peaking |
| Slew Rate | 6 V/µs - enables clean 100 kHz full-scale sine output into 2 kΩ with <1% THD+N |
| Input Offset Voltage (max) | 600 µV (A grade, 25°C) - ensures ≤1.2 mV total error in 2 V full-scale 12-bit systems |
| Supply Current per Amplifier | 750 µA (typ, 5 V) - allows four channels to operate below 3 mA total, critical for portable devices |
| Input Bias Current | 0.2 pA (typ) - permits use with >100 MΩ source impedances without significant DC error |
| Common-Mode Rejection Ratio | 89 dB (typ, 5 V) - rejects >89% of supply ripple and shared-noise coupling in mixed-signal PCBs |
| Operating Temperature Range | −40°C to +125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
AD8604DRUZ is packaged in a 14-lead TSSOP (RU suffix), 5.0 mm × 4.4 mm body, 0.65 mm pitch, with exposed pad for thermal enhancement. Pin 1 marked by dot; pin 1 is –IN A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | –IN A | Inverting input of Amplifier A - high-impedance node requiring guard ring in sensitive layouts |
| 2 | +IN A | Non-inverting input of Amplifier A - matched to Pin 1 for optimal CMRR |
| 3 | V+ | Positive supply for all four amplifiers - decoupling capacitor required within 2 mm |
| 4 | OUT B | Output of Amplifier B - capable of ±50 mA drive into resistive loads |
| 5 | –IN B | Inverting input of Amplifier B - electrically isolated from other inputs per channel |
| 6 | +IN B | Non-inverting input of Amplifier B - same bias current spec as Pin 2 |
| 7 | OUT A | Output of Amplifier A - rail-to-rail swing: 15 mV above V– and 20 mV below V+ at 1 mA |
| 8 | V– | Negative supply (GND in single-supply use) - return path for all quiescent and output currents |
| 9 | OUT D | Output of Amplifier D - shares V– and V+ rails; layout symmetry recommended vs. OUT A/B/C |
| 10 | –IN C | Inverting input of Amplifier C - identical electrical specs to Pins 1 and 5 |
| 11 | +IN C | Non-inverting input of Amplifier C - matches Pin 2/6 for consistent AC performance |
| 12 | OUT C | Output of Amplifier C - supports same dynamic load conditions as OUT A/B/D |
| 13 | +IN D | Non-inverting input of Amplifier D - referenced to same VCM range (0 V to V+) |
| 14 | –IN D | Inverting input of Amplifier D - fully specified for rail-to-rail input operation |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Guaranteed over full input common-mode range - eliminates latch-up risk when inputs exceed rails |
| Rail-to-rail input & output | Enables direct interfacing with CMOS ADCs/DACs and ASICs operating at 3 V or 5 V without level-shifting |
| DigiTrim® trimming | Post-package offset correction yields 600 µV max VOS in TSSOP - avoids costly laser trim and improves yield |
| Low distortion | THD+N < 0.001% at 1 kHz (G = 1, RL = 600 Ω) - suitable for audio line drivers and precision measurement front-ends |
| Qualified for automotive | AEC-Q100 Grade 1 compliance - validated for engine control, HVAC sensors, and ADAS power domains |
Applications
| Current Sensing | Barcode Scanners |
|---|---|
Use Scenario: High-side shunt monitoring in 12 V automotive ECUs with 50 mΩ sense resistor. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with rail-to-rail input accepting 0–12 V common-mode and output driving 12-bit SAR ADC reference. Use Value: 600 µV max offset contributes <0.12% error at 10 A full scale; 8 MHz bandwidth supports PWM switching noise rejection. |
Use Scenario: Laser diode driver feedback loop in handheld barcode scanners powered by two AA cells. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photodiode current to voltage, then buffer for ADC digitization. Use Value: 0.2 pA input bias prevents signal loss across 100 MΩ TIA feedback; 5 V/µs slew handles fast edge detection. |
| Battery-Powered Instrumentation | Multipole Filters |
Use Scenario: Portable pH meter using glass electrode with ultra-high output impedance (>1 GΩ). IC Role / Device Role / Timing Role: First-stage buffer isolating electrode from subsequent gain and filtering stages. Use Value: Sub-picoampere input bias minimizes electrode polarization error; 2.7 V min supply extends battery life in coin-cell designs. |
Use Scenario: 4th-order active low-pass filter in medical ECG front-end with cutoff at 150 Hz. IC Role / Device Role / Timing Role: Quad op-amp implementing two biquad sections (Sallen-Key topology) in single IC. Use Value: Matched AC performance across all four amplifiers ensures consistent pole placement; 89 dB CMRR suppresses 50/60 Hz interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDRGR | Zero-drift architecture; 0.02 µV/°C drift vs. AD8604DRUZ's 2 µV/°C; higher quiescent current (17 µA/ch) | Better for DC-critical thermocouple amplification; less suitable for battery-constrained high-speed apps | Select OPA2333AIDRGR only when sub-µV drift dominates over bandwidth and power budget |
| MCP6004-E/SL | Lower bandwidth (1 MHz), higher offset (1.5 mV max), no automotive qualification; 100% pin-compatible TSSOP-14 footprint | Cost-sensitive consumer-grade sensor nodes where 125°C operation not required | Choose MCP6004-E/SL for non-automotive, non-industrial cost-driven designs needing basic rail-to-rail function |
Compared with OPA2333AIDRGR and MCP6004-E/SL, AD8604DRUZ offers the best balance of speed (8.4 MHz), precision (600 µV VOS), and ruggedness (−40°C to +125°C, AEC-Q100), making it optimal for automotive and industrial signal chains demanding both accuracy and responsiveness.
Availability
AD8604DRUZ is available at Aetrix Electronics and suitable for current sensing, battery-powered instrumentation, and multipole filters requiring stable component supply across automotive and industrial temperature ranges.
Supply support for AD8604DRUZ 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-voltage, single-supply signal conditioning in space-constrained, battery-operated, and automotive systems - emphasizing rail-to-rail operation, low power, and robust process-trimmed accuracy.
FAQ
What is the maximum operating supply voltage for AD8604DRUZ?
The absolute maximum supply voltage for AD8604DRUZ is 6 V, but the recommended operating range is 2.7 V to 5.5 V per the datasheet. Operation at 6 V risks reliability degradation and is not characterized. At 5.5 V, AD8604DRUZ maintains full specification compliance including 600 µV max offset, 8.4 MHz GBW, and rail-to-rail output swing within 20 mV of rails at 1 mA load.
Does AD8604DRUZ support true rail-to-rail input with common-mode voltage equal to V+?
Yes, AD8604DRUZ supports true rail-to-rail input: its common-mode voltage range extends from V– (GND) to V+, verified across −40°C to +125°C. This is achieved via parallel NMOS and PMOS input stages, with seamless transition between them. At VCM = V+, the input offset voltage remains within datasheet limits (≤1300 µV for A grade), and CMRR stays ≥56 dB - critical for interfacing with 3.3 V or 5 V digital outputs.
Can AD8604DRUZ drive a 600 Ω audio load with low distortion?
Yes, AD8604DRUZ achieves THD+N < 0.001% at 1 kHz with G = 1 into 600 Ω (VS = 5 V), per Figure 38. Its 6 V/µs slew rate and 8.4 MHz bandwidth prevent slew-induced distortion on 10 kHz signals, and rail-to-rail output delivers >4.9 V p-p swing. For sustained 600 Ω drive, thermal design must account for ~150 mW dissipation per amplifier at full output.
Is AD8604DRUZ pin-compatible with other quad op-amps in TSSOP-14 packages?
AD8604DRUZ follows standard quad op-amp pinout (per Figure 3): Pins 1/2/7 = Amp A, 5/6/4 = Amp B, 10/11/12 = Amp C, 14/13/9 = Amp D, with shared V+ (Pin 3) and V– (Pin 8). It is pin-compatible with MCP6004-E/SL and TS914IDT, but not with LM324 variants (different pin mapping). Always verify layout against AD8604DRUZ's specific terminal assignment before PCB reuse.
What is the thermal resistance (θJA) of AD8604DRUZ in its TSSOP-14 package?
The junction-to-ambient thermal resistance (θJA) for AD8604DRUZ in the 14-lead TSSOP (RU) package is 112°C/W, measured on a standard 4-layer JEDEC board (per Table 4). With four amplifiers drawing 750 µA each at 5 V (15 mW total quiescent), self-heating is <2°C under still-air conditions - well within the −40°C to +125°C operating range.
AD8604DRUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- DigiTrim®
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 6V/µs
- Gain Bandwidth Product:
- 8.4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 1.3 mV
- Current - Supply:
- 750µA (x4 Channels)
- Current - Output / Channel:
- 50 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-TSSOP
AD8604DRUZ FAQ
1.How can I place an order for AD8604DRUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8604DRUZ 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 AD8604DRUZ reliable?
The price and inventory of AD8604DRUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8604DRUZ is usually 5 days.
3.What payment methods are accepted for AD8604DRUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8604DRUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8604DRUZ?
AD8604DRUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8604DRUZ 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 AD8604DRUZ?
For technical support, including AD8604DRUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8604DRUZ requirements.
6.How does Aetrix verify that AD8604DRUZ is sourced from the original manufacturer or authorized distributors?
All AD8604DRUZ 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 AD8604DRUZ meets industry standards.
7.What is the process for return or replacement of AD8604DRUZ?
All AD8604DRUZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8604DRUZ, 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 AD8604DRUZ part is unused and in its original packaging.
Return procedure for AD8604DRUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8604DRUZ Tags
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LM358DT
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