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Analog Devices Inc. AD8038ARZ-REEL7
- Part No.:
- AD8038ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8038ARZ-REEL7.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,002
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Product details
Overview
AD8038ARZ-REEL7 from Analog Devices is a single-channel, low-power, voltage-feedback operational amplifier optimized for high-speed, space-constrained applications. It delivers 350 MHz −3 dB bandwidth (G = +1), 425 V/μs slew rate, and 1.0 mA quiescent current per amplifier, operating from ±5 V or single 5 V supply. It is used in battery-powered instrumentation, A/D drivers, and active video filtering where power efficiency and signal fidelity are critical.
For engineers reviewing the AD8038ARZ-REEL7 datasheet, AD8038ARZ-REEL7 pinout, AD8038ARZ-REEL7 application, or AD8038ARZ-REEL7 equivalent, key selection considerations include its disable functionality (available only in SOIC package), 8-lead SOIC-8 (R) footprint, rail-to-rail input common-mode range (±4 V), and capacitive load drive capability up to 20 pF without external compensation.
Technical Context
The AD8038ARZ-REEL7 employs Analog Devices' proprietary XFCB process to achieve low noise (8 nV/√Hz, 600 fA/√Hz) at 1 mA quiescent current. Its voltage-feedback architecture supports stable operation with noise gains ≥ +1 and provides wide input common-mode range (−4 V to +4 V on ±5 V supplies) and output swing within 1 V of each rail.
It integrates a dedicated DISABLE pin enabling power-down mode (quiescent current reduced to 0.2 mA) with defined turn-on (180 ns) and turn-off (700 ns) times. The amplifier is optimized for driving capacitive loads ≤ 20 pF; larger loads require series output resistance to suppress peaking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 350 MHz at G = +1 (±5 V, 0.5 V p-p); enables baseband video and medium-speed data acquisition |
| Slew Rate | 425 V/μs (±5 V, 2 V step); supports fast transient response in ADC driver and pulse amplification |
| Input Voltage Noise | 8 nV/√Hz @ 100 kHz; preserves SNR in low-amplitude, high-frequency signal conditioning |
| Quiescent Current | 1.0 mA per amplifier (typical); allows continuous operation in battery-powered systems for >100 hours on coin cell |
| Supply Range | 3 V to 12 V (single or dual); supports portable 3.3 V, 5 V, and industrial ±5 V systems without level-shifting |
| Disable Function | Active-high logic via dedicated pin; reduces current to 0.2 mA and provides −60 dB input-output isolation at 1 MHz |
| Capacitive Load Drive | Up to 20 pF (30% overshoot, G = +2); eliminates need for external snubbing in most PCB trace and filter capacitor scenarios |
Pinout & Package
AD8038ARZ-REEL7 is packaged in an 8-lead SOIC (R) outline (JEDEC MS-012AA), measuring 4.90 mm × 3.91 mm × 1.75 mm, rated for −40°C to +85°C industrial operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected; must be left floating or tied to ground per layout best practice |
| 2 | Inverting Input (–IN) | Differential input node; accepts signals referenced to midsupply or ground in single-ended configurations |
| 3 | Noninverting Input (+IN) | Differential input node; used for reference biasing or feedback network connection |
| 4 | Negative Supply (–VS) | Ground or negative rail connection; required even in single-supply operation (e.g., tied to GND) |
| 5 | No Connect (NC) | Internally unconnected; no electrical function; avoid routing traces to this pad |
| 6 | Output (VOUT) | Amplified output node; capable of sourcing/sinking ±30 mA into 2 kΩ load |
| 7 | Positive Supply (+VS) | Primary power rail; supports 3 V to 12 V; requires local 0.01 μF ceramic bypass capacitor |
| 8 | Disable (DISABLE) | Logic-controlled shutdown pin; pulled high (> VS − 2.5 V) to enable, low (< VS − 4.5 V) to disable |
Key Features
| Feature | Design Value |
|---|---|
| Low Power Operation | 1.0 mA quiescent current enables multi-channel, always-on signal chains in portable medical and test equipment |
| High-Speed Performance | 350 MHz bandwidth and 425 V/μs slew rate support 10-bit ADC sampling up to 40 MSPS with <0.1% settling |
| Integrated Disable Control | Dedicated pin reduces supply current to 0.2 mA and isolates input from output (−60 dB @ 1 MHz), simplifying power sequencing |
| Wide Supply Flexibility | Operates from 3 V to 12 V single or dual rails, eliminating need for dedicated LDOs in mixed-voltage systems |
| Robust Capacitive Load Drive | Stable with up to 20 pF load capacitance; avoids external series resistors in typical PCB trace and filter implementations |
Applications
| Battery-Powered Instrumentation | A/D Converter Driver |
|---|---|
|
Use Scenario: Portable oscilloscope front-end amplification with 3.3 V supply and 10-hour battery life requirement. IC Role / Device Role / Timing Role: Single-ended buffer and gain stage preceding 12-bit SAR ADC, providing DC-coupled signal conditioning. Use Value: 1.0 mA quiescent current extends runtime; 350 MHz bandwidth preserves rise time of fast transients; disable pin enables sleep mode between acquisitions. |
Use Scenario: Driving AD9203 10-bit, 40 MSPS ADC in low-power data acquisition module. IC Role / Device Role / Timing Role: Single-ended-to-differential driver with matched gain paths and 2.5 V common-mode output. Use Value: 425 V/μs slew rate ensures full-scale step settling within 18 ns; low distortion (−90 dB SFDR @ 1 MHz) maintains ENOB > 9.5 bits. |
| Active Video Filtering | Level Shifting & Buffering |
|
Use Scenario: Composite video post-processing in handheld display controller with ±2.5 V supplies. IC Role / Device Role / Timing Role: Three-pole Sallen-Key low-pass filter (cutoff ~5 MHz) suppressing clock feedthrough artifacts. Use Value: Consumes only 5 mW per channel (vs. 25–30 mW for standard op amps); 8 nV/√Hz noise prevents visible luminance noise in analog video path. |
Use Scenario: Interfacing 1.8 V FPGA I/O to 3.3 V sensor interface with bidirectional level translation. IC Role / Device Role / Timing Role: Unity-gain buffer with rail-to-rail input (±4 V on ±5 V) and output swing to within 1 V of rails. Use Value: Wide input common-mode range accommodates mismatched logic thresholds; 20 pF capacitive load drive handles PCB trace + ESD protection capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6629MA/NOPB | Higher bandwidth (1.5 GHz), higher quiescent current (12 mA), no disable function, SOIC-8 package | Targeted at RF/IF signal chains requiring >1 GHz small-signal BW; unsuitable for battery operation | Select when bandwidth >1 GHz is mandatory and power budget allows ≥12× higher current draw than AD8038ARZ-REEL7 |
| ADA4891-1ARJZ-R7 | Lower bandwidth (225 MHz), lower quiescent current (1.2 mA), no disable pin, SC70-5 package (5-pin, no disable) | Optimized for ultra-small footprint in space-constrained consumer devices; lacks disable control and SOIC-8 compatibility | Select when board area is primary constraint and disable functionality is not required; not pin-compatible with AD8038ARZ-REEL7 |
Compared with LMH6629MA/NOPB and ADA4891-1ARJZ-R7, AD8038ARZ-REEL7 uniquely balances 350 MHz bandwidth, 1 mA quiescent current, and integrated disable in an industry-standard SOIC-8 package-making it optimal for portable instrumentation requiring both performance and power management.
Availability
AD8038ARZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, A/D converter driver circuits, and active video filtering applications requiring stable component supply across industrial temperature ranges and long-term production cycles.
Supply support for AD8038ARZ-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, serving industrial, automotive, communications, and healthcare markets.
The AD8038ARZ-REEL7 belongs to the AD8038/AD8039 family of low-power, high-speed voltage-feedback amplifiers designed specifically for portable and power-sensitive signal conditioning applications where bandwidth, noise, and quiescent current must be simultaneously optimized.
FAQ
What is the maximum capacitive load the AD8038ARZ-REEL7 can drive without external compensation?
The AD8038ARZ-REEL7 is specified to drive up to 20 pF capacitive load with ≤30% overshoot at G = +2 under ±5 V supply conditions. This covers typical PCB trace capacitance and small filter capacitors. For loads exceeding 20 pF, a series resistor (e.g., 10–50 Ω) at the output is recommended to maintain stability. Verified data from Figure 12 and Table 1 confirms this limit applies directly to the AD8038ARZ-REEL7 in SOIC-8 package.
Does the AD8038ARZ-REEL7 support single-supply operation?
Yes, the AD8038ARZ-REEL7 operates from a single 3 V to 12 V supply, with input common-mode range extending from 1.0 V to 4.0 V (at VS = 5 V) and output swing from 0.9 V to 4.1 V. Its rail-to-rail input stage and wide supply range make it suitable for 3.3 V and 5 V single-rail systems. Table 2 and Figure 9 in the Rev. G datasheet explicitly validate single-supply performance at 5 V.
Is the DISABLE pin available on all AD8038 package variants?
No-the DISABLE pin is available only on the AD8038 in the 8-lead SOIC (R) package, which includes the AD8038ARZ-REEL7. It is not present in the 5-lead SC70 or 8-lead SOT-23 variants. Figure 1 and the "POWER-DOWN DISABLE" section (page 3) confirm this feature is exclusive to the SOIC-8 version, and the "1 Only available in AD8038 8-lead SOIC package" footnote applies directly to AD8038ARZ-REEL7.
What is the input voltage noise density of the AD8038ARZ-REEL7 at 100 kHz?
The AD8038ARZ-REEL7 has an input voltage noise density of 8 nV/√Hz at 100 kHz, as measured and specified in Table 1 (Rev. G, page 3). This value remains stable across frequency (see Figure 23) and contributes to high signal integrity in precision, medium-bandwidth applications such as sensor amplification and video signal conditioning.
Can the AD8038ARZ-REEL7 drive a 50 Ω load directly?
The AD8038ARZ-REEL7 is not optimized for direct 50 Ω termination. Its output stage is specified for RL ≥ 500 Ω (see Figures 8–11 and Table 1). Driving 50 Ω continuously risks thermal overload and degraded distortion performance (e.g., SFDR drops >10 dB at 5 MHz). For 50 Ω systems, use a series 45 Ω resistor to isolate the amplifier while maintaining 50 Ω system impedance, as validated in application circuits like Figure 43.
AD8038ARZ-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:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 425V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 350 MHz
- Current - Input Bias:
- 400 nA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8038ARZ-REEL7 FAQ
1.How can I place an order for AD8038ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8038ARZ-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 AD8038ARZ-REEL7 reliable?
The price and inventory of AD8038ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8038ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8038ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8038ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8038ARZ-REEL7?
AD8038ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8038ARZ-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 AD8038ARZ-REEL7?
For technical support, including AD8038ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8038ARZ-REEL7 requirements.
6.How does Aetrix verify that AD8038ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8038ARZ-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 AD8038ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8038ARZ-REEL7?
All AD8038ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8038ARZ-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 AD8038ARZ-REEL7 part is unused and in its original packaging.
Return procedure for AD8038ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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