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Analog Devices Inc. AD744JRZ-REEL
- Part No.:
- AD744JRZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD744JRZ-REEL.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
AD744JRZ-REEL from Analog Devices is a precision, FET-input, high-speed monolithic operational amplifier optimized for DAC/ADC buffering and wideband signal conditioning. It delivers 500 ns settling to 0.01%, 75 V/µs slew rate, 13 MHz gain bandwidth (internally compensated), 0.0003% THD at 1 kHz, and drives ≥1000 pF capacitive loads with external compensation - making it ideal for 12-/14-/16-bit data acquisition systems.
For engineers reviewing the AD744JRZ-REEL datasheet, AD744JRZ-REEL pinout, AD744JRZ-REEL application, or AD744JRZ-REEL equivalent, key selection criteria include settling time vs. accuracy requirements, capacitive load drive capability, internal vs. external compensation trade-offs, and SOIC_N package compatibility with automated SMT assembly per EIA-481A tape-and-reel standards.
Technical Context
The AD744JRZ-REEL features a single-pole dominant-pole compensation architecture enabling fast 500 ns settling to 0.01% in unity-gain inverter configuration (G = –1), with guaranteed minimum slew rate of 50 V/µs (typ. 75 V/µs). Its BiFET input stage provides 3 TΩ||5.5 pF input impedance and <100 pA bias current at +25°C, supporting high-impedance sensor interfaces and precision I-to-V conversion.
External compensation via Pin 5–8 capacitor enables stable unity-gain follower operation and scalable capacitive load drive (up to 2000 pF), while decompensation between Pins 1–5 extends gain bandwidth beyond 200 MHz at G ≥ 10 - supporting DSP front-end preamplification and high-speed active filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Settling Time (0.01%) | 0.5 µs typical at G = –1, RL = 2 kΩ, CL = 10 pF - enables sub-LSB settling for 14-bit DACs with 10 V step. |
| Slew Rate | 75 V/µs typical, 50 V/µs min - supports full-scale transient response in audio and video line drivers without slewing distortion. |
| Gain Bandwidth | 13 MHz typical (G = –1, internal comp.) - ensures stable unity-gain inverter operation with phase margin >60°. |
| THD | 0.0003% at f = 1 kHz, VO = 3 Vrms - meets high-fidelity audio and spectral purity requirements in measurement systems. |
| Input Offset Voltage | 1.0 mV max (J-grade, +25°C) - maintains DC accuracy in precision buffer and active filter applications. |
| Capacitive Load Drive | ≥1000 pF with CCOMP = 20 pF - allows direct interface to long cables, ADC inputs, and DAC output capacitance without instability. |
| Supply Range | ±4.5 V to ±18 V - supports industrial ±15 V rails and low-voltage portable designs down to ±5 V. |
Pinout & Package
AD744JRZ-REEL is supplied in an 8-lead SOIC_N (R-8) package per JEDEC MS-001, 150 mil width, RoHS-compliant, tape-and-reel format compliant with EIA-481A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null | Connects to external potentiometer (10 kΩ) for input offset voltage trimming; required for ultra-low DC error applications. |
| 2 | Inverting Input (–IN) | High-impedance FET input node; sensitive to stray capacitance - requires guard ring and short trace routing. |
| 3 | Noninverting Input (+IN) | Matched FET input with identical bias current and noise characteristics; used for differential sensing or reference buffering. |
| 4 | –VS | Negative supply rail connection; must be bypassed with 0.1 µF ceramic + 1 µF electrolytic close to pin. |
| 5 | Compensation | Connects to Pin 8 for external capacitor (5–25 pF) to enable unity-gain follower stability or capacitive load drive. |
| 6 | Output | Class AB output stage capable of ±13.9 V swing into 2 kΩ and 25 mA short-circuit current. |
| 7 | +VS | Positive supply rail connection; same bypassing requirement as Pin 4. |
| 8 | Compensation | Reference node for external compensation capacitor; ties to internal compensation network when unconnected. |
Key Features
| Feature | Design Value |
|---|---|
| Precision BiFET Input Stage | 3 TΩ input resistance and <100 pA bias current enable high-Z sensor interfacing without loading errors. |
| Single-Pole Settling Response | Guaranteed 500 ns to 0.01% eliminates ringing in DAC buffer applications, reducing post-processing correction needs. |
| Configurable Compensation | Internal compensation for G ≥ 2 noninverting or G = –1 inverting; external CCOMP enables unity-gain follower and >1000 pF drive. |
| High Capacitive Load Tolerance | Stable operation with ≥1000 pF load at 14 V/µs slew rate (CCOMP = 20 pF) - eliminates need for external isolation resistors. |
| Low Distortion Architecture | 0.0003% THD at 1 kHz supports high-SNR signal chains in audio, medical imaging, and test equipment. |
Applications
| DAC Output Buffering | ADC Input Driver |
|---|---|
Use Scenario: Driving voltage output of 16-bit DACs (e.g., AD565A) in bipolar ±10 V mode with minimal code-dependent settling error. IC Role / Device Role / Timing Role: Precision output buffer with 500 ns settling to 0.01%, compensating for DAC output capacitance and maintaining monotonicity. Use Value: Enables <500 ns total system settling for 16-bit accuracy - eliminating need for post-DAC digital correction or oversampling. | Use Scenario: Conditioning analog signals prior to successive-approximation ADC sampling in data acquisition systems. IC Role / Device Role / Timing Role: High-speed, low-noise driver providing 13 MHz bandwidth and 0.0003% THD to preserve SNR during acquisition window. Use Value: Maintains effective resolution >14 bits at 100 kSPS by minimizing harmonic distortion and settling-induced aperture error. |
| Cable Driver | Active Filter Stage |
Use Scenario: Transmitting high-fidelity analog video or audio over 50 Ω coaxial cable up to 10 m length. IC Role / Device Role / Timing Role: Wideband line driver with 75 V/µs slew rate and 1000 pF capacitive load drive capability. Use Value: Delivers full-swing 10 Vpp signals without overshoot or phase lag, supporting NTSC/PAL timing integrity. | Use Scenario: Implementing 4th-order Butterworth anti-aliasing or reconstruction filters in 12-/14-bit DAQ systems. IC Role / Device Role / Timing Role: Low-distortion, high-GBW op amp enabling sharp roll-off and precise pole placement in Sallen-Key topologies. Use Value: Achieves <0.01 dB passband ripple and >60 dB stopband attenuation without component matching sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA602AU | Higher 100 V/µs slew rate but 20 MHz GBW; no internal compensation - requires external compensation for all gains. | Better for >10 MHz closed-loop bandwidth; less suitable for DAC buffering where 500 ns settling dominates. | Select OPA602AU only when >20 MHz small-signal bandwidth is required and layout supports custom compensation. |
| AD8065ARTZ-R7 | Lower 0.5 mV offset (B-grade), 145 MHz GBW, but 0.0005% THD - higher distortion than AD744JRZ-REEL at 1 kHz. | Preferred for RF/IF gain stages; less optimal for precision audio or metrology where THD <0.0004% is mandatory. | Choose AD8065ARTZ-R7 for high-frequency amplification above 10 MHz; retain AD744JRZ-REEL for THD-critical DAC/ADC buffering. |
Compared with OPA602AU and AD8065ARTZ-R7, AD744JRZ-REEL uniquely balances sub-microsecond settling, ultra-low THD, and factory-verified internal compensation - making it the most robust choice for production DAC/ADC buffer designs requiring guaranteed 0.01% accuracy without layout-dependent tuning.
Availability
AD744JRZ-REEL is available at Aetrix Electronics and suitable for precision data acquisition, high-fidelity audio signal conditioning, and industrial sensor interface applications requiring stable component supply across extended temperature and volume production cycles.
Supply support for AD744JRZ-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 AD744 product line was engineered specifically for high-accuracy, high-speed signal buffering in precision data conversion systems - emphasizing fast settling, low distortion, and configurable stability for DAC/ADC interface, active filtering, and wideband instrumentation.
FAQ
What is the maximum capacitive load the AD744JRZ-REEL can drive while maintaining stability?
The AD744JRZ-REEL can drive ≥1000 pF capacitive loads stably when externally compensated with a 20 pF capacitor between Pins 5 and 8. Under this condition, it achieves 14 V/µs slew rate and 1.5 µs settling to 0.0025%. For loads up to 2000 pF, CCOMP may be increased to 25 pF, reducing slew rate to 12.5 V/µs but preserving full stability - verified in Figure 30 and Table I of the AD744 datasheet Rev. D.
Does the AD744JRZ-REEL require external compensation for unity-gain follower operation?
Yes, the AD744JRZ-REEL requires external compensation for stable unity-gain follower operation. It is internally compensated only for unity-gain inverter (G = –1) or noninverting configurations with gain ≥2. To use it as a unity-gain voltage follower, a minimum 5 pF capacitor must be connected between Pins 5 and 8, as shown in Figure 30 and specified in Table I of the AD744 datasheet Rev. D.
What is the guaranteed settling time specification for the AD744JRZ-REEL at 0.01% error?
The AD744JRZ-REEL has a guaranteed maximum settling time of 0.75 µs to 0.01% for a 10 V step under G = –1, RL = 2 kΩ, and CL = 10 pF conditions (AD744J/A/S grade). The typical value is 0.5 µs, and this performance is 100% tested per the AD744 datasheet Rev. D specifications table on page –2.
Can the AD744JRZ-REEL be used in ±5 V supply applications?
Yes, the AD744JRZ-REEL operates over a supply range of ±4.5 V to ±18 V, making ±5 V fully supported. At ±5 V, output swing is reduced to approximately ±3.8 V (typical), and quiescent current drops to ~3.5 mA. All AC specs (settling, slew rate, THD) remain valid per the "Electrical Characteristics" table in the AD744 datasheet Rev. D, which specifies performance down to ±4.5 V.
What package type and compliance does the AD744JRZ-REEL use?
The AD744JRZ-REEL uses an 8-lead SOIC_N (R-8) package per JEDEC MS-001, with 150 mil body width and RoHS-compliant finish (indicated by the 'Z' suffix). It is supplied in EIA-481A-compliant tape-and-reel format, optimized for automated SMT placement. Package dimensions are documented in Figure 44 of the AD744 datasheet Rev. D.
AD744JRZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 75V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 13 MHz
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 3.5mA
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD744JRZ-REEL FAQ
1.How can I place an order for AD744JRZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD744JRZ-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 AD744JRZ-REEL reliable?
The price and inventory of AD744JRZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD744JRZ-REEL is usually 5 days.
3.What payment methods are accepted for AD744JRZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD744JRZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD744JRZ-REEL?
AD744JRZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD744JRZ-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 AD744JRZ-REEL?
For technical support, including AD744JRZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD744JRZ-REEL requirements.
6.How does Aetrix verify that AD744JRZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD744JRZ-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 AD744JRZ-REEL meets industry standards.
7.What is the process for return or replacement of AD744JRZ-REEL?
All AD744JRZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD744JRZ-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 AD744JRZ-REEL part is unused and in its original packaging.
Return procedure for AD744JRZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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