Features
- Single Supply Operation: 1.8V to 5.5V
- Rail-to-Rail Input and Output
- Low Input Offset Voltage: ±0.4mV
- Gain Bandwidth Product: 1MHz
- Low Broadband Noise: 38nV/rtHz
- Low Input Bias Current: 5pA
- Low Supply Current: 60µA/Ch (typ)
- Unity-Gain Stable
- Internal EMI Filter
- Temperature Range: -40°C to +125°C
RRA7900x Typical Application Circuit Diagram
Description
The RRA79001 is a low-power, general-purpose operational amplifier designed for modern, space-conscious electronics. With rail-to-rail input and output swing, this op amp delivers exceptional performance in tight quarters, making it ideal for smoke detectors, wearable tech, and compact appliances where low-voltage operation and robust capacitive-load driving are essential.
Parameters
| Attributes | Value |
|---|---|
| Channels (#) | 1 |
| Bandwidth (MHz) | 1 |
| IBIAS (nA) | 0.005 |
| CMRR (dB) | 100 |
| Rail-to-Rail Input | Yes |
| Rail-to-Rail Output | Yes |
| Common Mode Input Voltage Range (V) | 1.8 - 5.5 |
| IS per Amp (mA) | 0.078 |
| Single Supply Voltage Range (V) | 1.8 - 5.5 |
| Slew Rate (V/µs) | 2.5 |
| Input Offset Voltage Vio (Max) (mV (±)) | 1.6 |
| Supply Current Icc/Idd (Max) (mA) | 0.078 |
| Qualification Level | Standard |
Product Comparison
| RRA79001 | ISL28113 | |
| IBIAS (nA) | 0.005 | 0.003 |
| Supply Current Icc/Idd (Max) (mA) | 0.078 | - |
| Bandwidth (MHz) | 1 | 2 |
Application Block Diagrams
 | Humanoid Battery Management System Integrated humanoid robot BMS enabling safe, real-time power management, protection, and battery-state control. |
Additional Applications
- Sensor Signal Conditioning
- Power Modules
- Active Filters
- Smoke Detectors
- Motion Detectors
- Wearable Devices
- Appliances
- Barcode Scanners
- HVAC (Heating, Ventilation, and Air Conditioning)
- Motor Control
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| Part Number | Status | Samples | Longevity | Stock | Package | Budgetary Price (USD) | Carrier Type | Moisture Sensitivity Level (MSL) |
|---|---|---|---|---|---|---|---|---|
| RRA79001-P3J | Active | Available | 2035 Sep | In Stock | SOT23 | 1ku | $0.11 | Reel | 1 |
| RRA79001-QAJ | Active | Available | 2035 Sep | In Stock | SC70 | 1ku | $0.11 | Reel | 1 |
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- Application NotePDF 204 KB R13AN0014EU0100 Rev.1.00 May 10, 2022AI-generated Summary: Determining the open-loop output impedance (ZO) of an operational amplifier is essential for applying phase compensation in amplifier circuits, especially under capacitive load conditions. The output impedance affects the frequency response, causing a gain peak due to the interaction between the load capacitance and ZO. By measuring the peak frequency (fpk) and knowing the unity-gain bandwidth (fT or GBW), ZO can be calculated using derived equations relating these parameters. This method helps designers optimize amplifier stability and performance when driving capacitive loads.
- Application NotePDF 920 KB AN1827 Feb 07, 2022AI-generated Summary: The document discusses high-side, high-current sensing techniques using low-voltage op amps for high-voltage rails. It explains differential amplifier limitations and introduces improved circuits that use biasing schemes and buffer transistors to enhance accuracy and bandwidth. The circuits support sensing in switching supplies, including DCR sensing, and maintain functionality during load shorts. Key advantages include low power dissipation, high accuracy, and extended gain-bandwidth product.
- Application NotePDF 357 KB an1694 Jan 19, 2004AI-generated Summary: The document outlines the four fundamental internal blocks of an operational amplifier and presents a simple 2:1 stage circuit diagram. It includes important legal notices from Renesas Electronics regarding the use, liability, and intellectual property rights of their semiconductor products. The document clarifies product quality grades, intended applications, and restrictions on use in life-critical or hazardous systems. It emphasizes compliance with applicable laws and safety responsibilities when using Renesas products. Contact information for Renesas sales offices worldwide is also provided.
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- Application NotePDF 204 KB R13AN0014EU0100 Rev.1.00 May 10, 2022AI-generated Summary: Determining the open-loop output impedance (ZO) of an operational amplifier is essential for applying phase compensation in amplifier circuits, especially under capacitive load conditions. The output impedance affects the frequency response, causing a gain peak due to the interaction between the load capacitance and ZO. By measuring the peak frequency (fpk) and knowing the unity-gain bandwidth (fT or GBW), ZO can be calculated using derived equations relating these parameters. This method helps designers optimize amplifier stability and performance when driving capacitive loads.
- Application NotePDF 920 KB AN1827 Feb 07, 2022AI-generated Summary: The document discusses high-side, high-current sensing techniques using low-voltage op amps for high-voltage rails. It explains differential amplifier limitations and introduces improved circuits that use biasing schemes and buffer transistors to enhance accuracy and bandwidth. The circuits support sensing in switching supplies, including DCR sensing, and maintain functionality during load shorts. Key advantages include low power dissipation, high accuracy, and extended gain-bandwidth product.
- Application NotePDF 357 KB an1694 Jan 19, 2004AI-generated Summary: The document outlines the four fundamental internal blocks of an operational amplifier and presents a simple 2:1 stage circuit diagram. It includes important legal notices from Renesas Electronics regarding the use, liability, and intellectual property rights of their semiconductor products. The document clarifies product quality grades, intended applications, and restrictions on use in life-critical or hazardous systems. It emphasizes compliance with applicable laws and safety responsibilities when using Renesas products. Contact information for Renesas sales offices worldwide is also provided.
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