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Analog Devices Inc. AD8332ACP-REEL
- Part No.:
- AD8332ACP-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Amplifiers
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD8332ACP-REEL.pdf
- Description:
- IC VGA DUAL W/PREAMP LN 32-LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:248
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Product details
Overview
AD8332ACP-REEL from Analog Devices is a dual-channel ultralow-noise variable gain amplifier (VGA) with integrated preamplifier and programmable input impedance. It delivers 19 dB LNA gain, 48 dB VGA gain range (−4.5 dB to +43.5 dB in LO mode), 100 MHz bandwidth, and 40 nV/√Hz output-referred noise-optimized for driving 10-/12-bit differential ADCs in ultrasound time-gain control systems.
For engineers reviewing the AD8332ACP-REEL datasheet, AD8332ACP-REEL pinout, AD8332ACP-REEL application, or AD8332ACP-REEL equivalent, key selection criteria include its dual-channel LNA+VGA+postamp architecture, 32-lead LFCSP package with exposed thermal pad, selectable 3.5 dB / 15.5 dB postamp gain, and active input impedance matching via external RIZ.
Technical Context
The AD8332ACP-REEL implements a cascaded signal path: single-ended RF input → ultralow-noise LNA (0.74 nV/√Hz, 2.5 pA/√Hz) → X-AMP® VGA with linear-in-dB gain control (50 dB/V scaling) → pin-selectable postamplifier (3.5 dB or 15.5 dB). Its dual-channel design maintains −98 dB crosstalk and ±0.1 dB channel-to-channel gain matching across 0.1 V–0.95 V control voltage range.
Gain control is implemented via analog voltage (0–1.0 V) on GAIN pin, with HILO pin selecting between two gain ranges (LO: −4.5 to +43.5 dB; HI: 7.5 to 55.5 dB). The LNA input impedance is programmable (50 Ω to 6 kΩ) using external RIZ, preserving noise performance while enabling source matching for transducer interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LNA Gain | 19 dB (single-ended input to differential output); sets baseline amplification before VGA stage |
| VGA Gain Range | −4.5 dB to +43.5 dB (LO mode); enables wide dynamic range compression in AGC loops |
| Small-Signal Bandwidth | 100 MHz (dual-channel); supports ultrasound harmonics up to 10 MHz with flat group delay (±2 ns) |
| Output-Referred Noise | 40 nV/√Hz (LO gain, VGAIN = 0.5 V); ensures SNR preservation when driving 10-bit ADCs |
| Input Voltage Noise | 0.82 nV/√Hz (LNA+VGA combined); critical for low-level echo signal integrity in sonar |
| Channel Crosstalk | −98 dB at 1 MHz; prevents inter-channel interference in I/Q processing paths |
| Power Dissipation | 138 mW per channel (no signal); compatible with thermally constrained medical PCB layouts |
Pinout & Package
AD8332ACP-REEL uses a 32-lead LFCSP (Lead Frame Chip Scale Package) with 5 mm × 5 mm footprint and exposed thermal pad requiring soldering to PCB ground for thermal management, noise reduction, and mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LON1, LOP1 LON2, LOP2 |
LNA inverting/noninverting outputs (CH1/CH2) | Differential LNA outputs feed directly to VGA inputs; require matched 50 Ω termination |
| VIN1, VIP1 VIN2, VIP2 |
VGA inverting/noninverting inputs (CH1/CH2) | Accept differential signals from LNA; high CMRR suppresses common-mode noise |
| VOH1, VOL1 VOH2, VOL2 |
VGA noninverting/inverting outputs (CH1/CH2) | Drive differential ADC inputs; output swing limited to VCM ± 1.125 V |
| GAIN | Analog gain control voltage input | 0–1.0 V input yields 48 dB linear-in-dB gain change; 10 MΩ input impedance minimizes loading |
| HILO | Gain range select logic input | Logic-high selects HI range (7.5–55.5 dB); logic-low selects LO range (−4.5–+43.5 dB) |
| RCLMP | Output clamp level setting resistor terminal | External resistor sets clamping threshold to prevent ADC overload; accuracy ±50 mV (LO), ±75 mV (HI) |
| VCM1, VCM2 | Channel-specific common-mode voltage reference | Sets output DC bias; supports 1.5–3.5 V range to match ADC input requirements |
| ENBL, ENBV | LNA and VGA enable logic inputs | Independent channel power control; disable reduces current to ≤300 µA per channel |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-noise LNA | 0.74 nV/√Hz voltage noise + 2.5 pA/√Hz current noise enables detection of weak transducer echoes |
| Programmable input impedance | Adjustable 50 Ω to 6 kΩ via single external RIZ, matching piezoelectric transducers without degrading noise figure |
| Selectable postamp gain | PIN-strapped 3.5 dB or 15.5 dB gain optimizes total system gain/noise trade-off for 10-bit vs. 12-bit ADCs |
| User-configurable output clamping | External RCLMP sets precise clipping level to protect downstream ADCs from overvoltage during signal bursts |
| Dual-channel isolation | −98 dB crosstalk at 1 MHz ensures independent TGC control for multi-line ultrasound beamforming |
Applications
| Ultrasound Time-Gain Control (TGC) | High-Speed Dual ADC Driver |
|---|---|
|
Use Scenario: Compensating for acoustic attenuation in real-time B-mode imaging by dynamically adjusting gain per depth line. IC Role / Device Role / Timing Role: Dual-channel VGA providing independent, synchronized gain control for I/Q receive paths with <5 ns overload recovery. Use Value: Enables 120 dB dynamic range imaging with 100 MHz bandwidth and <±0.1 dB channel matching for artifact-free beam synthesis. |
Use Scenario: Driving interleaved or parallel 10-/12-bit differential ADCs in software-defined radio front ends. IC Role / Device Role / Timing Role: Low-noise, wideband signal conditioner delivering 4.5 V p-p differential output swing with ±2 ns group delay variation. Use Value: Preserves ENOB >9.5 bits at 10 MHz input frequency due to 40 nV/√Hz output noise and −62 dBc HD2 distortion. |
| Automatic Gain Control (AGC) System | I/Q Signal Processing |
|
Use Scenario: Stabilizing signal amplitude in sonar receivers subject to variable target return strength and environmental noise. IC Role / Device Role / Timing Role: Closed-loop VGA with analog gain control interface (50 dB/V scaling) and fast 500 ns response to 48 dB gain steps. Use Value: Maintains constant ADC input level across 80 dB input dynamic range while minimizing settling-induced phase distortion. |
Use Scenario: Conditioning quadrature baseband signals in coherent demodulation circuits for Doppler ultrasound or radar. IC Role / Device Role / Timing Role: Matched dual-channel amplifier ensuring <0.1° phase error and <−98 dB crosstalk between I and Q paths. Use Value: Reduces image ghosting and velocity estimation errors by preserving orthogonality under varying gain conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar variable gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8331ARQZ | Single-channel, 20-lead QSOP, 120 MHz bandwidth, 125 mW/channel | Lower channel density; suited for cost-sensitive single-path systems | Choose when board space allows larger QSOP and only one channel is needed |
| AD8334ACPZ | Quad-channel, 64-lead LFCSP, 100 MHz bandwidth, 138 mW/channel | Higher integration density; requires more complex layout and thermal management | Choose for compact multi-beam ultrasound systems needing four synchronized channels |
Compared with AD8332ACP-REEL, AD8331ARQZ offers higher bandwidth but lacks dual-channel integration, while AD8334ACPZ doubles channel count at identical per-channel specs-making AD8332ACP-REEL the optimal balance of density, thermal efficiency, and design simplicity for dual-path medical imaging.
Availability
AD8332ACP-REEL is available at Aetrix Electronics and suitable for ultrasound time-gain control, high-speed dual ADC driver, and I/Q signal processing applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for Class II medical device manufacturing.
Supply support for AD8332ACP-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, with design centers worldwide and ISO 9001-certified manufacturing.
The AD833x family was engineered specifically for medical ultrasound and high-fidelity instrumentation, emphasizing ultralow noise, precise gain linearity, and robust dual-channel matching across temperature and process variations.
FAQ
What is the operating temperature range for AD8332ACP-REEL?
The AD8332ACP-REEL is specified for operation from −40°C to +85°C ambient temperature. This industrial-grade range supports deployment in portable ultrasound systems and field-deployable sonar equipment where environmental extremes are encountered. All electrical specifications-including gain accuracy, noise, and bandwidth-are guaranteed across this full range.
How does the programmable input impedance work on AD8332ACP-REEL?
The AD8332ACP-REEL allows adjustment of LNA input resistance from 50 Ω to 6 kΩ using an external resistor (RIZ) connected to the LMD pins. For example, RIZ = 280 Ω sets 50 Ω input impedance-ideal for 50 Ω coaxial transducer interfaces-while maintaining the ultralow 0.74 nV/√Hz voltage noise. This feature eliminates need for external matching networks.
Can AD8332ACP-REEL drive a 12-bit ADC directly?
Yes, the AD8332ACP-REEL is explicitly optimized for 10-bit and 12-bit ADCs. In HI gain mode with 15.5 dB postamp, it delivers sufficient gain and low 40 nV/√Hz output-referred noise to preserve ENOB >11.2 bits at 10 MHz. Its differential outputs, VCM-adjustable common-mode level, and output clamping ensure safe, high-fidelity interfacing without external level-shifting circuitry.
What is the purpose of the exposed thermal pad on AD8332ACP-REEL?
The exposed thermal pad on the AD8332ACP-REEL must be soldered to the PCB ground plane using ≥9 thermal vias. This achieves θJA = 33°C/W (vs. 68°C/W without pad), reducing junction temperature rise by >40°C at full power. It also lowers ground impedance, improves PSRR (−68 dB at 100 kHz), and enhances mechanical reliability-critical for vibration-prone medical equipment.
How is gain controlled on AD8332ACP-REEL?
Gain on AD8332ACP-REEL is controlled by an analog voltage (0–1.0 V) applied to the GAIN pin, with 50 dB/V linear-in-dB scaling. A 0.5 V input yields mid-scale gain; factory trimming ensures ±0.3 dB absolute gain error and ±0.1 dB channel-to-channel matching. The HILO pin selects between two overlapping ranges: LO (−4.5 to +43.5 dB) and HI (7.5 to 55.5 dB), each with distinct noise and bandwidth trade-offs.
AD8332ACP-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- X-AMP®
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Variable Gain Amplifier
- Applications:
- Signal Processing
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-LFCSP-WQ (5x5)
AD8332ACP-REEL FAQ
1.How can I place an order for AD8332ACP-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8332ACP-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 AD8332ACP-REEL reliable?
The price and inventory of AD8332ACP-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8332ACP-REEL is usually 5 days.
3.What payment methods are accepted for AD8332ACP-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8332ACP-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8332ACP-REEL?
AD8332ACP-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8332ACP-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 AD8332ACP-REEL?
For technical support, including AD8332ACP-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8332ACP-REEL requirements.
6.How does Aetrix verify that AD8332ACP-REEL is sourced from the original manufacturer or authorized distributors?
All AD8332ACP-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 AD8332ACP-REEL meets industry standards.
7.What is the process for return or replacement of AD8332ACP-REEL?
All AD8332ACP-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8332ACP-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 AD8332ACP-REEL part is unused and in its original packaging.
Return procedure for AD8332ACP-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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