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Analog Devices Inc. AD744KRZ-REEL7
- Part No.:
- AD744KRZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD744KRZ-REEL7.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,142
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Product details
Overview
AD744KRZ-REEL7 from Analog Devices is a precision, FET-input, high-speed monolithic operational amplifier designed for demanding 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, and drives ≥1000 pF capacitive loads with external compensation - making it ideal for 12-bit to 16-bit data acquisition systems.
For engineers reviewing the AD744KRZ-REEL7 datasheet, AD744KRZ-REEL7 pinout, AD744KRZ-REEL7 application, or AD744KRZ-REEL7 equivalent, key selection criteria include its guaranteed 500 ns settling time at 0.01%, ±15 V operation, SOIC-8 package compatibility, and verified performance in DAC output buffering, active filter stages, and high-fidelity preamplifier circuits.
Technical Context
The AD744KRZ-REEL7 implements a single-pole dominant-pole compensation architecture enabling fast, monotonic settling without overshoot. Its BiFET input stage provides ultra-low input bias current (≤100 pA typ) and high input impedance (3 TΩ || 5.5 pF), critical for high-impedance sensor interfaces and precision integrators.
It supports both internal unity-gain-stable operation (inverter G ≥ 2 or noninverting G ≥ 2) and flexible external compensation via Pin 5–8 capacitor for unity-gain follower stability or decompensation (Pin 1–5) to achieve >200 MHz gain bandwidth at G = 1000 - directly enabling use in DSP front-end ac preamps and high-speed instrumentation amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Settling Time (0.01%) | 500 ns typical at G = –1; enables accurate sampling of 12–16-bit DAC outputs without code-dependent settling error. |
| Slew Rate | 75 V/µs min; ensures full-scale 20 V step response within 267 ns, supporting high-dynamic-range signal paths. |
| Gain Bandwidth Product | 13 MHz (internal comp); defines usable closed-loop bandwidth up to ~13 MHz at G = 1, sufficient for audio and medium-speed data acquisition. |
| Total Harmonic Distortion | 0.0003% at 1 kHz; preserves signal fidelity in audio buffers and precision measurement chains. |
| Input Offset Voltage | 0.5 mV max (AD744B grade); matched to commercial-grade AD744K spec per datasheet table - ensures <1 LSB error in 12-bit systems with ±10 V span. |
| Capacitive Load Drive | ≥1000 pF with external compensation; allows direct interface to long cables, ADC input capacitance, or large filter networks without instability. |
| Supply Voltage Range | ±4.5 V to ±18 V; supports industrial ±15 V rails and low-voltage designs down to ±4.5 V with maintained performance. |
Pinout & Package
AD744KRZ-REEL7 is supplied in an 8-lead SOIC_N (R-8) package per JEDEC MS-001, 150 mil width, RoHS-compliant, tape-and-reel format (EIA-481A). Package dimensions: 5.00 mm × 6.20 mm × 1.75 mm, with 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Compensation / Null | Connect external capacitor (5–25 pF) to Pin 8 for unity-gain stability or decompensation capacitor (2–10 pF) to Pin 5 for extended GBW. |
| 2 | Inverting Input (–IN) | High-impedance FET input node; requires guarded layout to minimize leakage and noise coupling in precision applications. |
| 3 | Noninverting Input (+IN) | Matched to Pin 2 for common-mode rejection; laser-trimmed for low offset voltage drift (≤10 µV/°C). |
| 4 | –VS | Negative supply rail; must be bypassed with 0.1 µF ceramic + 1 µF electrolytic close to pin for stable high-frequency operation. |
| 5 | Compensation / Null | Second null/compensation terminal; used with Pin 1 for decompensation (Pin 1–5) or with Pin 8 for standard compensation (Pin 5–8). |
| 6 | Output | Capable of ±13.9 V swing into 2 kΩ load; drives ≥25 mA short-circuit current and ≥1000 pF with external CCOMP. |
| 7 | +VS | Positive supply rail; same bypassing requirement as Pin 4; total quiescent current is 3.5–4.0 mA typical. |
| 8 | Compensation | Reference node for external compensation capacitor; connects to Pin 1 or Pin 5 depending on configuration (follower vs. decompensated mode). |
Key Features
| Feature | Design Value |
|---|---|
| Precision BiFET Input Stage | Laser-trimmed JFET inputs deliver ≤100 pA bias current and 0.5 mV max offset - essential for high-Z transducer interfaces and low-drift integrators. |
| Guaranteed 500 ns Settling | 100% tested specification ensures deterministic timing in closed-loop DAC buffer designs without post-fabrication characterization. |
| Configurable Compensation | Single external capacitor enables stable unity-gain follower operation or >200 MHz GBW at high gain - eliminating need for multiple op amp SKUs. |
| Robust Capacitive Load Drive | Validated 1000 pF drive capability with 14 V/µs slew rate under compensation - supports direct connection to ADC inputs and long PCB traces. |
| Low THD + High GBW | 0.0003% THD at 1 kHz and 13 MHz GBW enable simultaneous high fidelity and bandwidth in active filters and audio line drivers. |
Applications
| Output Buffer for 12–16-Bit DACs | ADC Input Driver |
|---|---|
Use Scenario: Buffers voltage output of high-speed DACs (e.g., AD565A) to maintain sub-LSB accuracy during rapid code transitions. IC Role / Device Role / Timing Role: Precision output amplifier with 500 ns settling ensures DAC codes settle fully before next sample clock edge. Use Value: Enables <500 ns system-level settling for 12-bit DACs (1/2 LSB = 2.44 mV @ ±10 V), preserving dynamic performance without added latency. | Use Scenario: Drives switched-capacitor input of SAR or sigma-delta ADCs requiring low source impedance and minimal charge kickback. IC Role / Device Role / Timing Role: Low-output-impedance, high-slew-rate buffer isolates ADC input from upstream signal chain while maintaining signal integrity. Use Value: 75 V/µs slew rate and 1000 pF drive capability prevent missing codes due to incomplete settling before ADC acquisition window. |
| Wideband Active Filter | High-Fidelity Audio Preamplifier |
Use Scenario: Implements 4th-order Butterworth low-pass filter in 14-bit data acquisition systems with flat group delay and minimal phase distortion. IC Role / Device Role / Timing Role: High-GBW, low-THD op amp serving as gain stage and integrator in multi-pole filter topology. Use Value: 13 MHz GBW supports filter cutoffs up to ~1.2 MHz (full-power response), while 0.0003% THD preserves harmonic content in baseband signals. | Use Scenario: Front-end preamp in professional audio converters handling line-level signals with wide dynamic range. IC Role / Device Role / Timing Role: Low-noise, low-distortion voltage amplifier providing gain and impedance transformation prior to ADC. Use Value: 18 nV/√Hz input voltage noise at 1 kHz and 0.0003% THD ensure >110 dB SNR in 24-bit audio paths without audible artifacts. |
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 | Lower slew rate (25 V/µs), higher input bias current (1 nA), no external decompensation option; SOIC-8 package. | Not suitable for >1000 pF load drive or >200 MHz GBW requirements; limited to lower-speed precision buffering. | Select OPA602AU only when ultra-low noise (<10 nV/√Hz) is prioritized over speed and capacitive drive capability. |
| LMH6321MA | Higher slew rate (375 V/µs), wider GBW (350 MHz), but higher THD (0.001%), no laser-trimmed offset (2 mV max), SOIC-8. | Better for RF/IF gain stages; less suitable for precision DC-coupled DAC buffering due to higher offset and drift. | Choose LMH6321MA for AC-coupled, high-frequency signal chains where speed dominates over DC accuracy and distortion. |
Compared with OPA602AU and LMH6321MA, AD744KRZ-REEL7 uniquely balances 500 ns settling, 0.0003% THD, and configurable 1000 pF drive - making it the only option among the three qualified for simultaneous high-resolution, high-speed, and high-fidelity analog signal conditioning in data acquisition systems.
Availability
AD744KRZ-REEL7 is available at Aetrix Electronics and suitable for precision DAC buffering, high-speed ADC driver, and wideband active filter applications requiring stable component supply across industrial design cycles and production ramp-up.
Supply support for AD744KRZ-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 AD744 product line was engineered specifically for high-accuracy, high-speed signal conditioning in data conversion systems - emphasizing fast settling, low distortion, and flexible compensation to replace discrete solutions in 12–16-bit DAC/ADC subsystems.
FAQ
What is the guaranteed settling time specification for AD744KRZ-REEL7?
The AD744KRZ-REEL7 is specified with a maximum settling time of 750 ns to 0.01% for a 10 V step under G = –1 conditions, with 500 ns typical. This value is 100% tested per the AD744 datasheet Rev. D, ensuring consistent performance in time-critical DAC buffer applications without derating.
Does AD744KRZ-REEL7 support unity-gain follower configuration?
Yes, AD744KRZ-REEL7 supports stable unity-gain follower operation when externally compensated with a 5 pF capacitor between Pins 1 and 8. Internal compensation alone does not guarantee stability in this configuration - external CCOMP is mandatory per Figure 30 and Table I of the AD744 datasheet.
What is the maximum capacitive load AD744KRZ-REEL7 can drive stably?
With proper external compensation (20 pF capacitor between Pins 5 and 8), AD744KRZ-REEL7 drives ≥1000 pF capacitive loads while maintaining 14 V/µs slew rate and 0.01% settling in 1.5 µs - verified in Figure 32 and Table II of the AD744 datasheet under G = 2 conditions.
Is AD744KRZ-REEL7 RoHS compliant?
Yes, AD744KRZ-REEL7 is RoHS compliant, as indicated by the "Z" suffix in the part number per Analog Devices' Ordering Guide (Rev. D, Page 14). It meets EU Directive 2011/65/EU and is shipped in lead-free, halogen-free packaging.
What temperature range is rated for AD744KRZ-REEL7?
AD744KRZ-REEL7 is rated for the commercial temperature range of 0°C to +70°C, consistent with the AD744K grade. Electrical specifications in the datasheet (e.g., 0.5 mV max offset, 75 V/µs min slew rate) apply across this full operating range.
AD744KRZ-REEL7 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:
- 250 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
AD744KRZ-REEL7 FAQ
1.How can I place an order for AD744KRZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD744KRZ-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 AD744KRZ-REEL7 reliable?
The price and inventory of AD744KRZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD744KRZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD744KRZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD744KRZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD744KRZ-REEL7?
AD744KRZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD744KRZ-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 AD744KRZ-REEL7?
For technical support, including AD744KRZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD744KRZ-REEL7 requirements.
6.How does Aetrix verify that AD744KRZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD744KRZ-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 AD744KRZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD744KRZ-REEL7?
All AD744KRZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD744KRZ-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 AD744KRZ-REEL7 part is unused and in its original packaging.
Return procedure for AD744KRZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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