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Analog Devices Inc. AD848JNZ
- Part No.:
- AD848JNZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AD848JNZ.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,537
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Product details
Overview
AD848JNZ from Analog Devices is a high-speed, low-power monolithic operational amplifier optimized for closed-loop gains ≥5, featuring 175 MHz gain bandwidth, 300 V/µs slew rate (±15 V), and 1 mV max input offset voltage at +25°C. It delivers 80 ns settling time to 0.1% for a 10 V step and drives capacitive loads without instability - widely deployed in video line drivers and 8-/10-bit data acquisition systems.
For engineers reviewing the AD848JNZ datasheet, AD848JNZ pinout, AD848JNZ application, or AD848JNZ equivalent, this page provides verified technical context, package-specific pin mapping, real-world application cards, and two confirmed alternative op amps with documented functional trade-offs for video, instrumentation, and signal conditioning designs.
Technical Context
The AD848JNZ uses Analog Devices' junction-isolated complementary bipolar (CB) process to achieve high-speed AC performance while maintaining low 4.8 mA quiescent current. Its internal compensation ensures stability at closed-loop gains of 5 or greater, distinguishing it from the decompensated AD849 (stable only at gains >24).
It operates across ±5 V and ±15 V supplies, delivering ±3 V output swing into 150 Ω, 92 dB minimum CMRR, and full-power bandwidth >20 MHz (2 Vp-p, ±5 V). Laser wafer trimming guarantees ≤1 mV input offset voltage without external nulling in most applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 175 MHz at ±15 V - enables stable amplification of signals up to ~175 MHz at unity gain, but rated for use ≥5× closed-loop gain. |
| Slew Rate | 300 V/µs at ±15 V - supports clean 10 V step response within 100 ns and 24 MHz full-power bandwidth (2 Vp-p). |
| Input Offset Voltage | 1 mV max at +25°C - eliminates need for external nulling in precision DC-coupled video and DAQ front-ends. |
| Supply Current | 4.8 mA typical at ±5 V - achieves high speed with low power, critical for multi-channel instrumentation. |
| Settling Time | 100 ns to 0.1% for 10 V step at ±15 V - meets timing requirements for fast-switching sample-and-hold and pulse amplification. |
| Differential Gain/Phase | 0.07% / 0.088° at 4.4 MHz - meets broadcast video fidelity standards for composite and component video paths. |
| Capacitive Load Drive | Stable into any capacitive load - allows direct connection to cables, ADC inputs, or long PCB traces without isolation resistors. |
Pinout & Package
AD848JNZ is supplied in an 8-pin plastic DIP (N-8) package with standard dual-in-line footprint and through-hole mounting. Pin 1 is marked by a notch or dot; leads are tin-lead plated for compatibility with standard wave soldering.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null | Connects to external potentiometer wiper for fine-tuning input offset; optional in most applications due to laser-trimmed 1 mV max spec. |
| 2 | Inverting Input (–IN) | High-impedance input node; requires impedance matching (e.g., RB resistor) to minimize bias-current-induced errors. |
| 3 | Non-Inverting Input (+IN) | DC-coupled input with ±3.4 V common-mode range at ±5 V supplies; used for unity-gain buffers or non-inverting configurations. |
| 4 | –VS | Negative supply rail; must be bypassed with 0.1 µF ceramic capacitor placed <1 cm from pin to reduce high-frequency noise coupling. |
| 5 | Null | Second offset null terminal; used with Pin 1 to form balanced nulling network per Figure 3 in datasheet. |
| 6 | Output | Capable of ±3 V swing into 150 Ω; drives terminated coaxial cables (e.g., 75 Ω) directly without external buffering. |
| 7 | +VS | Positive supply rail; same bypassing requirement as Pin 4; supports operation from ±4.5 V to ±18 V. |
| 8 | No Connect (NC) | Internally unconnected; must remain floating - no routing or grounding permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated architecture | Guarantees stability at closed-loop gains ≥5 without external compensation components - simplifies layout and reduces BOM count. |
| Laser-trimmed input offset | ≤1 mV max eliminates need for manual nulling in video line drivers and data acquisition front-ends, improving production yield. |
| Capacitive load immunity | Remains stable driving 100–1000 pF loads (e.g., unterminated cables or ADC input capacitance), avoiding oscillation without series isolation. |
| Wide supply range | Operates from ±4.5 V to ±18 V - supports both low-voltage portable instrumentation and industrial ±15 V systems. |
| Low input voltage noise | 5 nV/√Hz at 10 kHz - preserves SNR in pre-amplifier stages for RF and high-resolution analog signal chains. |
Applications
| Video Line Driver | 8-Bit Data Acquisition Front-End |
|---|---|
|
Use Scenario: Driving 75 Ω coaxial cable in broadcast video equipment with minimal distortion and reflection. IC Role / Device Role / Timing Role: High-speed buffer amplifier configured as inverting or non-inverting driver with back-termination support. Use Value: Delivers 0.07% differential gain and 0.088° phase error at 4.4 MHz, meeting SMPTE/ITU-R BT.601 video fidelity requirements. |
Use Scenario: Signal conditioning stage before 8-bit SAR or flash ADCs in automated test equipment. IC Role / Device Role / Timing Role: Low-settling-time gain stage amplifying sensor outputs with 100 ns 0.1% settling for 10 V steps. Use Value: Enables sampling rates >10 MSPS without aperture uncertainty degradation due to amplifier tailing. |
| Low-Noise Pre-Amplifier | RF Signal Generator Output Stage |
|
Use Scenario: First-stage amplification of weak RF or ultrasound transducer signals prior to filtering and digitization. IC Role / Device Role / Timing Role: Wideband, low-noise voltage amplifier with 5 nV/√Hz input noise and 175 MHz GBW. Use Value: Maintains signal integrity in high-frequency pre-amplification where thermal noise dominates system SNR. |
Use Scenario: Final output buffer in programmable RF signal generators requiring fast slewing and wide dynamic range. IC Role / Device Role / Timing Role: High-slew-rate driver delivering ±3 V into 50 Ω loads with minimal harmonic distortion. Use Value: Supports clean 24 MHz full-power sine wave generation (2 Vp-p) with <−50 dBc harmonic content per Figure 16. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM6164IM/NOPB | 100 MHz GBW, 3600 V/µs slew rate, 2.5 mA IQ; not internally compensated - requires external compensation for gains <10. | Lower bandwidth but higher slew rate; better suited for very fast pulse amplification than video fidelity. | Select LM6164IM/NOPB when ultra-fast transient response outweighs video linearity requirements. |
| EL2020CSZ | 200 MHz GBW, 2000 V/µs slew rate, 10 mA IQ; unity-gain stable; differential gain 0.05% at 4.4 MHz. | Higher power consumption but superior video specs; requires ±15 V only - not rated for ±5 V operation. | Choose EL2020CSZ for broadcast-grade video where 0.05% differential gain is mandatory and power budget allows. |
Compared with AD848JNZ, LM6164IM/NOPB offers faster slewing but lower bandwidth and no guaranteed video linearity, while EL2020CSZ delivers tighter video specs at higher power and narrower supply flexibility - making AD848JNZ the optimal balance of speed, fidelity, and efficiency for general-purpose high-speed analog signal paths.
Availability
AD848JNZ is available at Aetrix Electronics and suitable for video line drivers, 8-bit data acquisition systems, and low-noise pre-amplifiers requiring stable component supply across industrial, test & measurement, and broadcast equipment programs.
Supply support for AD848JNZ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide.
The AD848JNZ belongs to Analog Devices' high-speed op amp family designed specifically for demanding video, instrumentation, and signal generation applications where bandwidth, settling accuracy, and DC precision must coexist.
FAQ
What is the maximum stable closed-loop gain for AD848JNZ?
The AD848JNZ is internally compensated and specified as stable for closed-loop gains of 5 or greater. Attempting unity-gain or gain-of-2 configurations may result in peaking or oscillation - for lower gains, consider the AD847 (unity-gain stable) or AD849 (requires gain ≥24). This gain constraint is inherent to the AD848JNZ's compensation architecture and is verified across temperature and supply conditions in the datasheet.
Does AD848JNZ require external offset nulling in typical applications?
No - the AD848JNZ features laser wafer trimming that guarantees ≤1 mV input offset voltage at +25°C, eliminating external nulling in most video, DAQ, and line driver applications. Pins 1 and 5 are provided for optional fine adjustment, but are unused in production designs unless sub-millivolt DC accuracy is required over full temperature range.
Can AD848JNZ operate from a single +5 V supply?
No - the AD848JNZ is a dual-supply operational amplifier specified only for symmetric ±4.5 V to ±18 V operation. It does not support single-supply configurations; its input common-mode range extends to ±3.4 V with ±5 V supplies, and output swing is centered at ground. For single-supply designs, consider the AD8051 or ADA4891 family instead of AD848JNZ.
What is the recommended power supply bypassing for AD848JNZ?
Analog Devices specifies 0.1 µF ceramic disc capacitors placed as close as possible (<1 cm) to both +VS (Pin 7) and –VS (Pin 4), connected directly to a low-inductance ground plane. Additional bulk capacitance (e.g., 10 µF tantalum) may be added at the board edge, but local high-frequency decoupling is mandatory to prevent oscillation and preserve 175 MHz bandwidth - a requirement explicitly called out in the "Grounding and Bypassing" section of the AD848JNZ datasheet.
Is AD848JNZ pin-compatible with other op amps like HA2520 or EL2020?
The AD848JNZ is documented as a functional replacement for HA2520/2/5 and EL2020 in applications where closed-loop gain is ≥5, but it is not pin-compatible - HA2520 uses 8-pin metal-can packaging with different pin assignments, and EL2020 uses 8-pin SOIC with distinct pinout. The AD848JNZ follows standard DIP-8 op amp pinout (Pin 2 = –IN, Pin 3 = +IN, Pin 6 = OUT), enabling drop-in replacement only for legacy DIP-8 op amps with identical pin mapping.
AD848JNZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 300V/µs
- Gain Bandwidth Product:
- 175 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3.3 µA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 5.1mA
- Current - Output / Channel:
- 32 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AD848JNZ FAQ
1.How can I place an order for AD848JNZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD848JNZ 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 AD848JNZ reliable?
The price and inventory of AD848JNZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD848JNZ is usually 5 days.
3.What payment methods are accepted for AD848JNZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD848JNZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD848JNZ?
AD848JNZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD848JNZ 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 AD848JNZ?
For technical support, including AD848JNZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD848JNZ requirements.
6.How does Aetrix verify that AD848JNZ is sourced from the original manufacturer or authorized distributors?
All AD848JNZ 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 AD848JNZ meets industry standards.
7.What is the process for return or replacement of AD848JNZ?
All AD848JNZ units undergo pre-shipment inspection (PSI). If there is an issue with AD848JNZ, 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 AD848JNZ part is unused and in its original packaging.
Return procedure for AD848JNZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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