Overview
The ADM4073HWRJZ-REEL7, produced by Analog Devices Inc., is a low-cost, high-side current-sense amplifier designed for various portable and automotive applications. This component is particularly suited for systems where current monitoring is crucial, such as cell phones, notebook computers, PDAs, and rechargeable battery-powered systems. The ADM4073HWRJZ-REEL7 offers a voltage output and does not require gain-setting resistors, making it a convenient and efficient solution for current sensing needs.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Gain (AV) | 100 V/V | - |
| Bandwidth (BW) | 1.6 MHz | VSENSE = 100 mV, VCC = 12 V, VRS+ = 12 V, CLOAD = 5 pF |
| Gain Accuracy | ±1.0% to ±3.0% | VSENSE = 10 mV to 100 mV, VCC = 12 V, VRS+ = 12 V, TA = -40°C to +125°C |
| Supply Voltage Range | 3 V to 28 V | - |
| Supply Current | Typical 500 μA | TA = 25°C |
| Output Resistance (ROUT) | 12 kΩ | - |
| Power Supply Rejection Ratio (PSRR) | 85 dB | VSENSE = 60 mV, VCC = 3 V to 28 V |
| Settling Time to 1% of Final Value | 400 ns to 800 ns | VSENSE = 6.25 mV to 100 mV, VCC = 12 V, VRS+ = 12 V, CLOAD = 5 pF |
| Operating Temperature Range | -40°C to +125°C | - |
| Package Type | 6-Lead SOT-23 | - |
Key Features
- Low-cost, compact current-sense solution
- Three available gain versions: 20 V/V, 50 V/V, and 100 V/V (ADM4073HWRJZ-REEL7 has a gain of 100 V/V)
- No need for gain-setting resistors
- Wide input common-mode range of 2 V to 28 V, independent of the supply voltage
- High bandwidth of up to 1.6 MHz
- Typical ±1.0% to ±3.0% full-scale accuracy
- Low supply current of 500 μA
- Wide operating temperature range of -40°C to +125°C
Applications
- Small portable applications such as cell phones, notebook computers, and PDAs
- Rechargeable battery-powered systems
- Battery-charger control loops
- Automotive systems requiring high-side current sensing
Q & A
- What is the primary function of the ADM4073HWRJZ-REEL7?
The primary function is to sense current on the high side of a circuit and provide a voltage output proportional to the sensed current. - What are the available gain versions for the ADM4073?
The ADM4073 is available in three gain versions: 20 V/V (ADM4073T), 50 V/V (ADM4073F), and 100 V/V (ADM4073H). - What is the typical supply current of the ADM4073HWRJZ-REEL7?
The typical supply current is 500 μA. - What is the operating temperature range of the ADM4073HWRJZ-REEL7?
The operating temperature range is -40°C to +125°C. - What is the bandwidth of the ADM4073HWRJZ-REEL7?
The bandwidth is up to 1.6 MHz. - Does the ADM4073HWRJZ-REEL7 require gain-setting resistors?
No, it does not require gain-setting resistors. - What is the input common-mode range of the ADM4073HWRJZ-REEL7?
The input common-mode range is 2 V to 28 V, independent of the supply voltage. - What is the package type of the ADM4073HWRJZ-REEL7?
The package type is 6-Lead SOT-23. - What are some typical applications of the ADM4073HWRJZ-REEL7?
Typical applications include small portable devices like cell phones and notebook computers, rechargeable battery-powered systems, and automotive systems. - What is the power supply rejection ratio (PSRR) of the ADM4073HWRJZ-REEL7?
The PSRR is 85 dB.
