ADA4945-1ACPZ-RL7 - Low Noise FDA ADC Driver | Analog Devices
MPN: ADA4945-1ACPZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.88 | $388.00 |
| 500 | $3.49 | $1,745.00 |
| 1,000 | $3.1 | $3,100.00 |
Drop-in alternatives for ADA4945-1ACPZ-RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADA4945-1ACPZ-R7
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4945-1ACPZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4940-1ACPZ-R7
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4940-1ACPZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4945-1ACPZ-RL7 Maximum Ratings & Electrical Characteristics
| Type | Fully Differential Amplifier |
| Supply Voltage Range | 3 V to 10 V |
| Offset Voltage Drift | 0.1 µV/°C |
| Power Modes | 2 (selectable) |
| Package | 16-LFCSP (3x3 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | [DATA_NEEDED: Operating temperature range] |
| Bandwidth | [DATA_NEEDED: Bandwidth] |
| Slew Rate | [DATA_NEEDED: Slew rate] |
| Input Voltage Noise | [DATA_NEEDED: Input voltage noise] |
| Output Current | [DATA_NEEDED: Output current] |
| Input Common-Mode Range | [DATA_NEEDED: Input common-mode range] |
| Output Common-Mode Range | [DATA_NEEDED: Output common-mode range] |
| RoHS Status | Compliant |
| REACH Status | Compliant |
ADA4945-1ACPZ-RL7 Pin Configuration
| Pin 1 | OUT+ — Positive differential output |
| Pin 2 | OUT- — Negative differential output |
| Pin 3 | VOCM — Output common-mode voltage control |
| Pin 4 | PD — Power-down control |
| Pin 5 | V+ — Positive supply |
| Pin 6 | IN+ — Non-inverting input |
| Pin 7 | IN- — Inverting input |
| Pin 8 | V- — Negative supply |
| Pin 9 | FB+ — Positive feedback |
| Pin 10 | FB- — Negative feedback |
| Pin 11 | GND — Ground |
| Pin 12 | NC — No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADA4945-1ACPZ-RL7 is suitable for 6 applications: ADC Driver, Data Acquisition Systems, Communications Systems, Medical Imaging, Instrumentation, Test and Measurement.
ADC Driver
The ADA4945-1ACPZ-RL7 is ideal for driving high-speed ADCs. Its low noise and low distortion ensure that the ADC's performance is not degraded. The fully differential output provides balanced signals, improving common-mode rejection and reducing even-order harmonics. With a supply range of 3 V to 10 V, it can interface with various ADC supplies. The two power modes allow optimization for power-sensitive or high-performance systems. The low offset drift (0.1 µV/°C) ensures accurate conversion over temperature, making it suitable for precision data acquisition.
Recommended
Data Acquisition Systems
In data acquisition systems, the ADA4945-1ACPZ-RL7 provides the necessary signal conditioning to interface sensors with ADCs. Its low offset drift and low noise ensure accurate measurement of small signals. The device operates from 3 V to 10 V, making it compatible with a wide range of system supplies. The small LFCSP package saves board space, and the two power modes allow trade-offs between power and performance. The fully differential output helps reject common-mode interference, improving system accuracy.
Recommended
Communications Systems
The ADA4945-1ACPZ-RL7 is well-suited for communications systems, such as base stations and software-defined radios, where it drives ADCs in receive paths. Its low distortion and high linearity preserve signal integrity in the presence of strong interferers. The device's wide supply range (3 V to 10 V) accommodates various radio supply rails. The two power modes enable optimization for battery-operated or line-powered equipment. The compact package is ideal for dense PCB layouts in multi-channel systems.
Recommended
Medical Imaging
In medical imaging systems, such as ultrasound and MRI, the ADA4945-1ACPZ-RL7 is used to condition signals from transducers before ADC conversion. Its low noise and low offset drift are critical for detecting small physiological signals. The device operates from 3 V to 10 V, compatible with medical equipment power supplies. The fully differential output reduces common-mode noise, improving image quality. The small package allows high channel density in portable devices.
Recommended
Instrumentation
The ADA4945-1ACPZ-RL7 is used in precision instrumentation, such as spectrum analyzers and oscilloscopes, to drive ADCs with high accuracy. Its low offset drift (0.1 µV/°C) ensures stable measurements over temperature. The device's low noise and distortion preserve signal fidelity. The two power modes allow optimization for bench-top or portable instruments. The wide supply range (3 V to 10 V) provides flexibility in power design.
Recommended
Test and Measurement
In test and measurement equipment, the ADA4945-1ACPZ-RL7 provides signal conditioning for accurate measurements. Its low noise and low distortion are essential for high-precision testing. The device's wide supply range (3 V to 10 V) and small package make it suitable for modular instruments. The two power modes allow balancing power consumption and performance. The low offset drift ensures consistent measurements across temperature variations.
Recommended
Recommended Products Summary
Engineering reference data for ADA4945-1ACPZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADA4945-1ACPZ-R7 | ADA4945-1ACPZ-RL | ADA4940-1ACPZ-R7 |
|---|---|---|---|---|
| Package | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Supply Voltage Range | 3 V to 10 V | 3 V to 10 V | 3 V to 10 V | [DATA_NEEDED] |
| Offset Drift | 0.1 µV/°C | 0.1 µV/°C | 0.1 µV/°C | [DATA_NEEDED] |
| Power Modes | 2 | 2 | 2 | [DATA_NEEDED] |
| Bandwidth | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Input Voltage Noise | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| RoHS | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Ultra-low offset drift of 0.1 µV/°C (vs ADA4940-1ACPZ-R7)
- Two selectable power modes (vs ADA4940-1ACPZ-R7)
- Broad supply range of 3 V to 10 V (vs ADA4940-1ACPZ-R7)
Design Notes
Ensure adequate power supply decoupling. Place 0.1 µF and 10 µF capacitors close to the V+ and V- pins to minimize noise and ensure stability. The ADA4945-1 operates from 3 V to 10 V, so verify the supply rails are within this range.
For optimal performance, use a solid ground plane and keep feedback paths short. Match the feedback resistor values precisely to maintain balance and minimize distortion. The LFCSP package has an exposed pad that should be soldered to the ground plane for thermal and electrical performance.
Avoid exceeding the absolute maximum supply voltage. The power mode selection should be based on the required bandwidth and power budget. Incorrect feedback network can cause instability or increased distortion. Always refer to the datasheet for recommended component values.
Compliance Information
RoHS and REACH compliant per distributor data. AEC-Q100 not applicable for this non-automotive part.
