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Analog Devices Inc. AD8260ACPZ-R7
- Part No.:
- AD8260ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD8260ACPZ-R7.pdf
- Description:
- IC VARIABLE GAIN 1 CIRC 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:5,492
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Product details
Overview
AD8260ACPZ-R7 from Analog Devices is a dual-function high-current driver amplifier and digitally programmable variable-gain amplifier (DGA) in a single 32-lead LFCSP package. It integrates a 195 MHz bandwidth driver delivering ±300 mA output current and a 230 MHz, 30 dB range (−6 dB to +24 dB in 3 dB steps) DGA with differential output, optimized for Tx/Rx signal processing in broadband communications systems.
For engineers reviewing the AD8260ACPZ-R7 datasheet, AD8260ACPZ-R7 pinout, AD8260ACPZ-R7 application, or AD8260ACPZ-R7 equivalent, key selection criteria include its dual-path architecture (driver + VGA), gain-step accuracy (±0.15 dB), low input voltage noise (2.4 nV/√Hz), wide supply range (3.3 V to ±5 V), and −40°C to +105°C operation - critical for power line transceivers and digital AGC designs.
Technical Context
The AD8260ACPZ-R7 implements two independent signal paths: a high-current driver with fixed 3.52 dB gain and 195 MHz small-signal bandwidth, and a preamplifier–DGA chain featuring single-ended input, differential output, and parallel 4-bit gain control (GNS0–GNS3). The driver supports direct DAC drive via differential inputs (INPP/INPN), while the DGA uses internal attenuator stages and output amplification (8×) to achieve linear-in-dB gain control.
Both sections share VMID reference generation (enabled by default), support single-supply (3.3 V to 10 V) and dual-supply (±3.3 V to ±5 V) operation, and feature independent enable controls (TXEN for driver, ENBL for VGA/preamp). Power-down modes reduce quiescent current to 35 µA when fully disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Driver −3 dB BW | 195 MHz at 500 Ω load - enables baseband-to-UHF transmission without external buffering |
| DGA −3 dB BW | 230 MHz at gain code 0110 - maintains flat gain response across full 30 dB range up to 100 MHz |
| Output Current | ±310 mA into 1 Ω - drives low-impedance cables, transformers, or 50 Ω RF loads directly |
| Gain Control | 30 dB range in precise 3 dB steps (−6 dB to +24 dB) - supports accurate digital AGC with <±0.15 dB gain error |
| Input Noise | 2.4 nV/√Hz (DGA, shorted input) - preserves SNR when interfacing to high-speed ADCs |
| Supply Range | 3.3 V to 10 V single or ±3.3 V to ±5 V dual - accommodates photodiode pulse handling and AC-coupled bandpass signals |
| Operating Temp | −40°C to +105°C - qualified for industrial and outdoor communication infrastructure |
Pinout & Package
The AD8260ACPZ-R7 is housed in a 5 mm × 5 mm, 32-lead LFCSP package with exposed thermal pad (EPAD) recommended for soldering to ground plane. Pin numbering follows standard top-view orientation with Pin 1 indicator.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INPP / INPN | Differential driver input | Accepts direct current-output DAC signals; high CMRR reduces common-mode interference |
| TXOP / TXFB | Driver output and feedback | Configurable gain via external resistors on INRP/INRN; supports unity-gain stable operation |
| PRAI / PRAO | Preamplifier input/output | Single-ended input accepts photodiode or sensor signals; output feeds DGA attenuator stage |
| VGAP / VGAN | DGA differential output | AC-coupled differential interface to low-voltage ADCs; 3 Ω output impedance ensures clean termination |
| GNS0–GNS3 | Parallel gain control bits | 4-bit binary code selects one of 10 discrete 3 dB gain steps; 50 ns response time enables fast AGC settling |
| TXEN / ENBL | Driver and chip enable | Independent control allows power gating of driver or entire IC; 0.2 µs driver enable time minimizes Tx latency |
| VPOS / VNEG | Driver supply rails | Separate supplies isolate driver noise from sensitive VGA section; supports ±5 V operation for max dynamic range |
| VMDO / VMDI | VMID buffer output/input | Internal mid-rail generator simplifies single-supply biasing; disable via VMDI to use external reference |
Key Features
| Feature | Design Value |
|---|---|
| Integrated driver + VGA | Eliminates inter-stage coupling components and layout complexity in bidirectional signal chains |
| 30 dB gain range in 3 dB steps | Enables precise digital gain calibration and repeatable AGC loop design without analog trimming |
| ±300 mA driver output | Drives 50 Ω coaxial lines or transformer-coupled PLC modems without external buffers |
| 2.4 nV/√Hz input noise (DGA) | Preserves effective resolution of 14-bit+ ADCs sampling at >100 MSPS |
| 50 ns gain step response | Supports real-time adaptive filtering and burst-mode communication protocols |
| −40°C to +105°C operation | Validated for deployment in uncontrolled environments including smart grid endpoints and base station radios |
Applications
| Power Line Communication Transceiver | Digital Automatic Gain Control System |
|---|---|
Use Scenario: Bidirectional data transmission over medium-voltage distribution lines using OFDM modulation in CENELEC A/B bands (3–148.5 kHz). IC Role / Device Role / Timing Role: AD8260ACPZ-R7 serves as combined Tx driver (for line injection) and Rx VGA (for signal conditioning prior to ADC), sharing clock domain and supply rails. Use Value: Single-chip integration reduces BOM count by 2 amplifiers and eliminates inter-stage matching errors, improving SNR consistency across temperature. | Use Scenario: Real-time amplitude normalization of RF bursts in TDD wireless infrastructure, where signal envelope varies >60 dB across timeslots. IC Role / Device Role / Timing Role: AD8260ACPZ-R7 VGA provides 30 dB digitally controlled attenuation with <50 ns step response, synchronized to baseband processor GPIOs. Use Value: Linear-in-dB gain law and ±0.15 dB absolute error enable closed-loop AGC convergence within 2–3 samples, reducing latency vs. analog-only solutions. |
| Tx/Rx Signal Processing Module | High-Speed Sensor Interface |
Use Scenario: Full-duplex ultrasound beamformer front-end requiring simultaneous transmit pulse generation and echo reception. IC Role / Device Role / Timing Role: AD8260ACPZ-R7 driver delivers high-current excitation pulses to piezoelectric transducers, while VGA conditions weak return echoes before digitization. Use Value: Shared VMID reference ensures consistent common-mode level between Tx and Rx paths, minimizing DC offset-induced image artifacts. | Use Scenario: Low-noise amplification of fast-rise-time pulses from photomultiplier tubes (PMTs) or avalanche photodiodes (APDs) in time-of-flight analyzers. IC Role / Device Role / Timing Role: AD8260ACPZ-R7 preamplifier accepts single-ended negative-going PMT pulses; DGA adjusts gain per event intensity before peak detection. Use Value: 2.4 nV/√Hz input-referred noise and −94 dBc HD2 at 1 MHz preserve pulse fidelity, enabling sub-nanosecond timing resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current driver and programmable gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8370ACPZ-R7 | Single-path 2.5 GHz DGA only; no integrated driver; 24 dB gain range; higher noise (3.5 nV/√Hz) | Lacks driver functionality; requires external buffer for high-current output; suited for pure receiver chains | Select when only VGA function is needed and driver capability is provided elsewhere |
| THS3201DGN | Standalone 360 MHz current-feedback driver; no gain control; ±370 mA output; 12.5 V/µs slew rate | No VGA or digital control; requires external gain-setting network and AGC logic | Select when maximum bandwidth and output current are prioritized over integrated gain programming |
Compared with AD8260ACPZ-R7, AD8370ACPZ-R7 offers higher frequency operation but lacks driver integration and precision 3 dB gain steps, while THS3201DGN delivers superior speed and current but requires full external signal chain design - making AD8260ACPZ-R7 optimal for space-constrained, dual-path AGC systems needing guaranteed gain accuracy and thermal stability.
Availability
AD8260ACPZ-R7 is available at Aetrix Electronics and suitable for power line transceivers, digital AGC systems, and Tx/Rx signal processing modules requiring stable component supply, extended temperature operation, and verified production traceability.
Supply support for AD8260ACPZ-R7 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 DSP technologies, serving industrial, communications, automotive, and healthcare markets with precision signal processing solutions.
The AD8260ACPZ-R7 belongs to Analog Devices' high-speed amplifier product line, designed specifically for integrated transmitter/receiver signal conditioning in broadband communication infrastructure where compact dual-path functionality, low noise, and robust thermal performance are essential.
FAQ
What is the maximum output current capability of the AD8260ACPZ-R7 driver amplifier?
The AD8260ACPZ-R7 driver amplifier delivers ±310 mA into a 1 Ω load under test conditions (VIN = ±0.5 V), with guaranteed ±300 mA continuous output into typical 50 Ω or 500 Ω loads. This enables direct driving of transmission lines, transformers, and RF power stages without external buffers - a key advantage in PLC and broadband modem designs where board space is constrained.
Does the AD8260ACPZ-R7 support single-supply operation, and how is biasing handled?
Yes, the AD8260ACPZ-R7 supports single-supply operation from 3.3 V to 10 V. An internal VMID buffer generates a mid-rail reference (VS/2) at Pin VMDO, used for biasing both driver and VGA sections. When VMID is disabled (VMDI pulled to VNCM), an external reference can be applied - allowing flexible biasing for negative-going photodiode pulses or AC-coupled bandpass signals without violating input voltage limits.
How does the gain control interface of the AD8260ACPZ-R7 work, and what is its timing behavior?
The AD8260ACPZ-R7 uses a parallel 4-bit interface (GNS0–GNS3) to select gain codes from 0001 (−6 dB) to 1011 (+24 dB) in precise 3 dB steps. Each code corresponds to a defined attenuation setting in the DGA's internal log-attenuator. Gain changes settle within 50 ns, and the logic threshold is 1.1 V with ±0.2 V hysteresis - ensuring robust noise immunity in noisy industrial environments where the AD8260ACPZ-R7 is commonly deployed.
What is the noise performance of the AD8260ACPZ-R7 VGA section, and how does it impact ADC interfacing?
The AD8260ACPZ-R7 VGA exhibits 2.4 nV/√Hz input-referred voltage noise (at 10 MHz, shorted input), rising to 98.1 nV/√Hz output-referred at maximum gain (+24 dB). This low noise floor preserves dynamic range when driving high-speed ADCs - for example, maintaining >70 dB SNR with a 14-bit, 125 MSPS ADC sampling 10 MHz IF signals, which is critical in software-defined radio and spectrum monitoring applications using the AD8260ACPZ-R7.
Can the AD8260ACPZ-R7 driver and VGA sections be powered down independently?
Yes, the AD8260ACPZ-R7 provides independent power control: TXEN disables only the driver amplifier (reducing current from 28.3 mA to 19.1 mA), while ENBL disables the entire VGA/preamp chain (reducing current to 10.8 mA when driver remains active). Full chip disable (TXEN = 0, ENBL = 0) draws just 35 µA. This granular control enables dynamic power management in battery-powered or thermally constrained systems using the AD8260ACPZ-R7.
AD8260ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Variable Gain
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- 730V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 195 MHz
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- -
- Current - Supply:
- 28.3mA
- Current - Output / Channel:
- 310 mA
- Voltage - Supply Span (Min):
- 3.3 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-LFCSP (5x5)
AD8260ACPZ-R7 FAQ
1.How can I place an order for AD8260ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8260ACPZ-R7 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 AD8260ACPZ-R7 reliable?
The price and inventory of AD8260ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8260ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8260ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8260ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8260ACPZ-R7?
AD8260ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8260ACPZ-R7 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 AD8260ACPZ-R7?
For technical support, including AD8260ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8260ACPZ-R7 requirements.
6.How does Aetrix verify that AD8260ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8260ACPZ-R7 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 AD8260ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8260ACPZ-R7?
All AD8260ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8260ACPZ-R7, 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 AD8260ACPZ-R7 part is unused and in its original packaging.
Return procedure for AD8260ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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