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Analog Devices Inc. AD824ARZ-14-REEL7
- Part No.:
- AD824ARZ-14-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD824ARZ-14-REEL7.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:846
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Product details
Overview
AD824ARZ-14-REEL7 from Analog Devices is a quad, FET-input, rail-to-rail output operational amplifier optimized for single-supply operation from 3 V to 30 V. It delivers 2 MHz gain bandwidth, 2 V/µs slew rate, and ultra-low 2 pA input bias current-enabling high-accuracy signal conditioning in battery-powered medical instrumentation and photo diode preamplifiers.
For engineers reviewing the AD824ARZ-14-REEL7 datasheet, AD824ARZ-14-REEL7 pinout, AD824ARZ-14-REEL7 application, or AD824ARZ-14-REEL7 equivalent, key selection criteria include guaranteed rail-to-rail output swing (within 15 mV of rails), low 500 µA per-amplifier supply current, extended industrial temperature range (−40°C to +85°C), and SOIC-14 packaging compatible with automated assembly.
Technical Context
The AD824ARZ-14-REEL7 integrates four independent JFET-input amplifiers on a complementary bipolar process, enabling input common-mode voltage extension to within 0.2 V of the negative rail and up to 1 V below the positive rail without phase reversal. Its unique input stage maintains picoamp-level bias current across this full range.
The rail-to-rail output stage uses bipolar transistors to achieve 15 mV saturation voltage at ±2.5 mA load, while capacitive load stability is maintained up to 350 pF without external compensation. Channel separation exceeds −123 dB at 1 kHz, supporting multistage filtering in compact single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V single supply; supports direct integration into 3.3 V, 5 V, and 24 V industrial systems without level-shifting. |
| Input Bias Current | 2 pA typical; enables use with >100 MΩ source impedances (e.g., photodiodes, strain gauges) without significant DC error. |
| Rail-to-Rail Output Swing | Within 15 mV of both rails at ±2.5 mA; preserves dynamic range in low-voltage systems like portable medical devices. |
| Gain Bandwidth Product | 2 MHz; supports stable closed-loop gain ≥10 at 200 kHz for precision sensor signal chains. |
| Supply Current per Amplifier | 500 µA typical at 25°C; allows full quad operation under 2.1 mA total, critical for battery life in remote sensors. |
| Input Offset Voltage | 1.0 mV max (AD824A grade); laser-trimmed for <0.01% gain error in instrumentation amplifier configurations. |
| Operating Temperature | −40°C to +85°C; qualified for extended industrial environments including power supply control and motor feedback loops. |
Pinout & Package
AD824ARZ-14-REEL7 is housed in a narrow 14-lead SOIC package (R suffix), RoHS-compliant and tape-and-reel packaged (REEL7). The pinout supports standard quad op amp layout with independent inputs and outputs per channel, plus shared V+ and V– supplies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 12 | +IN A/B/C/D | Noninverting inputs for each of four amplifiers; high-impedance JFET nodes accepting signals up to V+ − 1 V. |
| 2, 6, 10, 13 | −IN A/B/C/D | Inverting inputs; matched to +IN for CMRR >60 dB across operating range. |
| 3, 7, 8, 11 | OUT A/B/C/D | Rail-to-rail output terminals; capable of sourcing/sinking ±12 mA with <15 mV headroom to rails. |
| 4 | V+ | Positive supply connection; accepts 3 V to 30 V or +15 V in dual-supply mode. |
| 14 | V– | Negative supply connection; tied to GND in single-supply use or −15 V in dual mode. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Input voltages up to V+ are tolerated without output inversion-critical for overvoltage-safe sensor front ends. |
| Capacitive load drive | Stable with up to 350 pF directly on output; eliminates need for isolation resistors in DAC buffer applications. |
| Laser-trimmed offset | Guaranteed 1.5 mV max offset over temperature; reduces calibration burden in portable instrumentation. |
| Low THD + N | 0.005% at 10 kHz (AV = +1); supports audio-grade signal paths in 3 V headphone drivers. |
| High CMRR | 80 dB min at 0–2 V common-mode range; rejects noise in noisy industrial sensor interfaces. |
Applications
| Photo Diode Preamplifier | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in pulse oximeters or environmental light sensors. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal input loading. Use Value: 2 pA input bias current prevents signal loss across >1 GΩ feedback resistors, preserving SNR in sub-nA detection. |
Use Scenario: Signal conditioning in handheld ECG monitors or portable gas analyzers running on coin-cell batteries. IC Role / Device Role / Timing Role: Quad-channel analog front end providing gain, filtering, and reference buffering. Use Value: 500 µA per amplifier enables full functionality under 2.1 mA total supply current, extending battery life beyond 100 hours. |
| Medical Instrumentation | DAC Output Amplifier |
Use Scenario: Front-end amplification for disposable biosensors requiring high accuracy and low power. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with rail-to-rail output driving ADC inputs. Use Value: 15 mV output headroom at 3 V supply maximizes usable ADC input range, improving effective resolution by 0.5 bits. |
Use Scenario: Buffering 12-bit DAC outputs in programmable power supply controllers. IC Role / Device Role / Timing Role: Low-offset, low-noise unity-gain follower isolating DAC from load variations. Use Value: 1.0 mV max offset ensures <0.025% full-scale error in 4.096 V reference systems, meeting industrial calibration standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad FET-input op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL074CDR | Higher 200 pA input bias current; 3 MHz GBW but no rail-to-rail output (±12 V min supply). | Suitable for AC-coupled audio or non-critical industrial signal chains where rail-to-rail swing is not required. | Choose TL074CDR only when cost is primary and 3 V operation or output headroom <100 mV is unnecessary. |
| OPA4340UA | Rail-to-rail I/O, lower 0.5 mV offset, but higher 750 µA supply current and limited 5.5 V max supply. | Better for ultra-low-offset 3.3 V systems (e.g., precision data loggers), but incompatible with 12–24 V industrial rails. | Select OPA4340UA when offset <0.5 mV is mandatory and supply is strictly ≤5.5 V; avoid for wide-supply or ultra-low-power designs. |
Compared with TL074CDR and OPA4340UA, AD824ARZ-14-REEL7 uniquely balances 2 pA bias current, rail-to-rail output at 3–30 V, and 500 µA quiescent current-making it the only option for battery-powered medical sensors requiring both high impedance interface and wide supply flexibility.
Availability
AD824ARZ-14-REEL7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, medical instrumentation, and remote sensors requiring stable component supply across long production lifecycles.
Supply support for AD824ARZ-14-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.
The AD824 belongs to Analog Devices' precision operational amplifier product line, engineered specifically for low-power, high-impedance signal acquisition in portable and industrial measurement systems.
FAQ
What supply voltage range does the AD824ARZ-14-REEL7 support?
The AD824ARZ-14-REEL7 operates from a single supply of 3 V to 30 V or dual supplies up to ±15 V. At 3 V, it guarantees rail-to-rail output swing and 500 µA per amplifier supply current. Absolute maximum ratings allow ±18 V supplies, but functional operation is specified only within the 3 V–30 V single-supply or ±15 V dual-supply ranges stated in the datasheet.
Does the AD824ARZ-14-REEL7 have rail-to-rail input capability?
No-the AD824ARZ-14-REEL7 features rail-to-rail *output* swing but not rail-to-rail *input*. Its input common-mode voltage range extends from 0.2 V below V– to 1 V below V+, meaning it accepts inputs down to ground in single-supply use but cannot reliably handle signals at the positive rail without bandwidth degradation. This is explicitly documented in the General Description and Theory of Operation sections.
What is the maximum capacitive load the AD824ARZ-14-REEL7 can drive stably?
The AD824ARZ-14-REEL7 is characterized for stable operation with up to 350 pF capacitive load in unity-gain follower configuration without external compensation. This value is confirmed in the General Description and validated in Figure 6 and Figure 8 of the datasheet. Driving >350 pF requires isolation resistance or compensation networks as shown in Figure 31.
Is the AD824ARZ-14-REEL7 suitable for photodiode preamplifier applications?
Yes-the AD824ARZ-14-REEL7 is explicitly recommended for photodiode preamplifiers in its Applications section. Its 2 pA typical input bias current minimizes leakage-induced errors across high-value transimpedance resistors, and its rail-to-rail output maximizes dynamic range when interfacing with low-voltage ADCs in portable optical sensors.
What is the operating temperature range for the AD824ARZ-14-REEL7?
The AD824ARZ-14-REEL7 is specified for the extended industrial temperature range of −40°C to +85°C. This rating is confirmed in the General Description, Absolute Maximum Ratings table, and all electrical specifications tables (Tables 1–3), ensuring reliable performance in demanding environments such as power supply control and remote sensor nodes.
AD824ARZ-14-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- 2 MHz
- Current - Input Bias:
- 4 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 560µA (x4 Channels)
- Current - Output / Channel:
- 12 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
AD824ARZ-14-REEL7 FAQ
1.How can I place an order for AD824ARZ-14-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD824ARZ-14-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 AD824ARZ-14-REEL7 reliable?
The price and inventory of AD824ARZ-14-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD824ARZ-14-REEL7 is usually 5 days.
3.What payment methods are accepted for AD824ARZ-14-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD824ARZ-14-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD824ARZ-14-REEL7?
AD824ARZ-14-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD824ARZ-14-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 AD824ARZ-14-REEL7?
For technical support, including AD824ARZ-14-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD824ARZ-14-REEL7 requirements.
6.How does Aetrix verify that AD824ARZ-14-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD824ARZ-14-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 AD824ARZ-14-REEL7 meets industry standards.
7.What is the process for return or replacement of AD824ARZ-14-REEL7?
All AD824ARZ-14-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD824ARZ-14-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 AD824ARZ-14-REEL7 part is unused and in its original packaging.
Return procedure for AD824ARZ-14-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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