ADA4806-2ARMZ - 105MHz Low Power Rail-to-Rail Op Amp | ADI
MPN: ADA4806-2ARMZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
ADA4806-2ARMZ Overview
An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output. It is a fundamental building block in analog electronics, used in signal conditioning, filtering, and amplification. The ADA4806-2 belongs to the class of rail-to-rail output amplifiers, which can swing its output very close to the supply rails, maximizing dynamic range in low-voltage systems. As a voltage feedback amplifier, it offers stable operation with resistive feedback networks and is widely used in buffer, gain, and active filter circuits. The ADA4806-2 is part of the broader family of precision and high-speed op amps from Analog Devices, which includes the ADA4805, ADA4807, and ADA4896 series.
Key features of the ADA4806-2 include its low power consumption, with a supply current of only 1.1 mA per amplifier in full power mode, and a shutdown mode that reduces current to less than 1 µA. The device also offers a high slew rate of 160 V/µs, which is essential for fast signal processing in video and communication systems. The rail-to-rail output stage allows the amplifier to drive loads close to the supply rails, improving headroom in battery-powered designs. The low offset voltage and drift ensure accurate DC performance over temperature, making it suitable for precision instrumentation.
Technically, the ADA4806-2 uses a complementary bipolar process that achieves a unity-gain bandwidth of 105 MHz while maintaining low distortion. The amplifier is stable for gains of +1 and above, and it can drive capacitive loads up to 100 pF without oscillation. The device includes internal ESD protection and is available in a lead-free, RoHS-compliant package. The MSOP-8 package has a thermal resistance of 150°C/W, which should be considered in high-power applications.
Typical applications include portable instrumentation, active filters, analog-to-digital converter (ADC) drivers, and video signal conditioning. The low power and shutdown mode make it ideal for battery-powered devices where power efficiency is critical. The high slew rate and bandwidth support high-speed signal paths in communication systems.
When designing with the ADA4806-2, ensure proper power supply decoupling with 0.1 µF capacitors close to the supply pins. The shutdown pin can be used to reduce power consumption when the amplifier is idle. For best performance, use a solid ground plane and minimize parasitic capacitance on the output.
Drop-in alternatives for ADA4806-2ARMZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADA4806-2ARMZ (same form factor and footprint) — differing in Supply Voltage Range, Slew Rate, Package, Amplifier Type, Supply Current per Amplifier.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADA4807-2ARMZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.82 / Unit
View Datasheet →ADA4896-2ARMZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.25 / Unit
View Datasheet →ADA4661-2ARMZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.82 / Unit
View Datasheet →ADA4528-2ARMZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.8 / Unit
View Datasheet →OPA2376AIDR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADA4806-2ARMZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Bandwidth (-3dB) | 105 MHz |
| Slew Rate | 160 V/µs |
| Input Offset Voltage (max) | 125 µV |
| Input Offset Voltage Drift | 0.2 µV/°C |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Supply Current per Amplifier | 1.1 mA |
| Shutdown Current | 1 µA (max) |
| Output Type | Rail-to-Rail |
| Input Type | Voltage Feedback |
| Operating Temperature Range | -40°C to +125°C |
| Package | MSOP-8 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Amplifier Type | General Purpose |
ADA4806-2ARMZ Pin Configuration
| Pin 1 | OUT1 — Output of amplifier 1 |
| Pin 2 | -IN1 — Inverting input of amplifier 1 |
| Pin 3 | +IN1 — Non-inverting input of amplifier 1 |
| Pin 4 | V- — Negative supply |
| Pin 5 | +IN2 — Non-inverting input of amplifier 2 |
| Pin 6 | -IN2 — Inverting input of amplifier 2 |
| Pin 7 | OUT2 — Output of amplifier 2 |
| Pin 8 | V+ — Positive supply |
Typical Applications
ADA4806-2ARMZ is suitable for 6 applications: Portable Instrumentation, Active Filters, ADC Driver, Video Signal Conditioning, Battery-Powered Audio, Industrial Control.
Portable Instrumentation
The ADA4806-2ARMZ's low power consumption (1.1 mA per amplifier) and shutdown mode make it ideal for battery-powered portable instruments. Its 105 MHz bandwidth and 160 V/µs slew rate ensure accurate signal conditioning for sensors and transducers. The rail-to-rail output maximizes dynamic range in 3.3V systems, and the MSOP-8 package saves board space. In a typical data acquisition front-end, the op amp buffers sensor signals before an ADC, providing high input impedance and low offset voltage (125 µV) for precision measurements.
Recommended
Active Filters
The ADA4806-2ARMZ is well-suited for active filter designs due to its 105 MHz unity-gain bandwidth and high slew rate. It can implement Butterworth, Chebyshev, or Bessel filters for anti-aliasing or signal conditioning. The low offset voltage (125 µV) and drift (0.2 µV/°C) ensure accurate DC performance in filter circuits. With a supply range of 2.7V to 5.5V, it supports low-voltage filter designs. The rail-to-rail output allows maximum signal swing, and the low power consumption is beneficial in multi-stage filters.
Recommended
ADC Driver
The ADA4806-2ARMZ can drive high-speed ADCs with its 105 MHz bandwidth and 160 V/µs slew rate. It provides the necessary drive capability and low output impedance to charge the ADC's sampling capacitor quickly. The rail-to-rail output ensures full-scale input range utilization. The low offset voltage (125 µV) minimizes DC errors in the signal chain. In a typical ADC driver circuit, the op amp is configured as a unity-gain buffer or with gain to match the ADC's input range, and a series resistor may be added for stability.
Recommended
Video Signal Conditioning
The ADA4806-2ARMZ's 105 MHz bandwidth and 160 V/µs slew rate make it suitable for video signal conditioning in applications like CCTV and video distribution. It can buffer and amplify composite video signals with minimal distortion. The rail-to-rail output allows full video swing, and the low power consumption is advantageous in multi-channel systems. The shutdown mode can be used to power down unused channels. The MSOP-8 package is compact for dense video processing boards.
Recommended
Battery-Powered Audio
The ADA4806-2ARMZ is suitable for battery-powered audio applications such as portable media players and hearing aids. Its low supply current (1.1 mA per amplifier) and shutdown mode extend battery life. The 105 MHz bandwidth is more than sufficient for audio frequencies, and the low offset voltage ensures minimal DC offset in the audio path. The rail-to-rail output maximizes headroom in low-voltage designs. The MSOP-8 package is ideal for compact audio devices.
Recommended
Industrial Control
The ADA4806-2ARMZ operates over the extended industrial temperature range of -40°C to +125°C, making it suitable for industrial control systems. It can be used in signal conditioning for sensors, process control loops, and motor control feedback. The low offset voltage and drift ensure accurate measurement over temperature. The 105 MHz bandwidth supports fast control loops, and the rail-to-rail output interfaces directly with ADCs and microcontrollers. The shutdown mode can be used for power management in remote industrial nodes.
Recommended
Recommended Products Summary
Engineering reference data for ADA4806-2ARMZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADA4807-2ARMZ | ADA4896-2ARMZ | ADA4661-2ARMZ | ADA4528-2ARMZ | OPA2376AIDR |
|---|---|---|---|---|---|---|
| Package | MSOP-8 | MSOP-8 | MSOP-8 | MSOP-8 | MSOP-8 | MSOP-8 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Bandwidth | 105 MHz | 105 MHz | 230 MHz | 18 MHz | 6 MHz | 5.5 MHz |
| Slew Rate | 160 V/µs | 160 V/µs | 120 V/µs | 2 V/µs | 0.5 V/µs | 2 V/µs |
| Input Offset Voltage (max) | 125 µV | 125 µV | 50 µV | 50 µV | 2.5 µV | 25 µV |
| Supply Current per Amplifier | 1.1 mA | 1.1 mA | 3 mA | 0.8 mA | 0.8 mA | 0.95 mA |
| Supply Voltage Range | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.2V to 5.5V |
| Shutdown Mode | Yes | Yes | No | No | No | No |
Key Differentiators
- Three power modes including shutdown (vs ADA4896-2ARMZ)
- Lower supply current (vs ADA4896-2ARMZ)
- Higher bandwidth than precision alternatives (vs ADA4528-2ARMZ)
Design Notes
The ADA4806-2ARMZ operates from 2.7V to 5.5V. Use 0.1 µF ceramic capacitors close to each supply pin (V+ and V-) to decouple high-frequency noise. For best performance, a 10 µF bulk capacitor may be added. The shutdown mode reduces supply current to less than 1 µA, which is useful for power-sensitive designs.
For optimal performance, place the ADA4806-2ARMZ on a solid ground plane and keep traces short. The MSOP-8 package has a thermal resistance of 150°C/W; ensure adequate copper area for heat dissipation if power dissipation is significant. Avoid running high-speed digital traces near the analog inputs to prevent noise coupling.
Do not exceed the absolute maximum supply voltage of 6V. The shutdown pin (if available) should be driven to a valid logic level; floating it may cause unpredictable operation. For capacitive loads greater than 100 pF, add a series resistor (e.g., 50Ω) to maintain stability. Ensure the input common-mode voltage stays within the specified range to avoid phase reversal.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
