Overview
The ADM4073FWRJZ-REEL7, produced by Analog Devices Inc., is a low-cost, high-side current-sense amplifier designed for various applications requiring precise current measurement. This component is particularly suited for small portable devices such as cell phones, notebook computers, PDAs, and other similar electronics. It features a voltage output that does not require gain setting resistors, making it a compact and efficient solution for current sensing needs.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Gain (AV) | 50 V/V | - |
| Gain Accuracy | ±1.0% to ±2.0% | VSENSE = 10 mV to 150 mV, VCC = 12 V, VRS+ = 12 V, TA = +25°C to +125°C |
| Bandwidth (BW) | 1.7 MHz | VSENSE = 100 mV, VCC = 12 V, VRS+ = 12 V, CLOAD = 5 pF |
| 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 |
| Supply Current | 500 μA | TA = 25°C |
| Operating Temperature Range | −40°C to +125°C | - |
| Package Type | 6-Lead SOT-23 RJ-6 | - |
Key Features
- Low-cost, compact current-sense solution
- Three available gain versions: 20 V/V (ADM4073T), 50 V/V (ADM4073F), and 100 V/V (ADM4073H)
- Typical ±1.0% full-scale accuracy
- No gain setting resistors required for voltage output
- Wide operating voltage range: 3 V to 28 V
- High power supply rejection ratio (PSRR): up to 85 dB
- Fast settling time: 400 ns to 800 ns
- Low supply current: 500 μA at TA = 25°C
Applications
- Cell phones and other mobile devices
- Notebook computers and PDAs
- Automotive systems (automotive grade versions available)
- Industrial control systems requiring precise current measurement
- Power management and monitoring in various electronic devices
Q & A
- What is the primary function of the ADM4073FWRJZ-REEL7?
The primary function of the ADM4073FWRJZ-REEL7 is to sense current on the high side of a circuit and provide a proportional voltage output.
- What are the available gain versions for the ADM4073 series?
The ADM4073 series is available in three gain versions: 20 V/V (ADM4073T), 50 V/V (ADM4073F), and 100 V/V (ADM4073H).
- What is the typical gain accuracy of the ADM4073F?
The typical gain accuracy of the ADM4073F is ±1.0% to ±2.0% over the specified temperature range.
- What is the bandwidth of the ADM4073F?
The bandwidth of the ADM4073F is 1.7 MHz with a 5 pF load and VSENSE = 100 mV.
- What is the power supply rejection ratio (PSRR) of the ADM4073F?
The power supply rejection ratio (PSRR) of the ADM4073F is up to 85 dB.
- What is the settling time of the ADM4073F?
The settling time of the ADM4073F is 400 ns to 800 ns to reach 1% of the final value.
- What is the supply current of the ADM4073F at 25°C?
The supply current of the ADM4073F at 25°C is 500 μA.
- What is the operating temperature range of the ADM4073F?
The operating temperature range of the ADM4073F is −40°C to +125°C.
- In what package type is the ADM4073F available?
The ADM4073F is available in a 6-Lead SOT-23 RJ-6 package.
- What are some typical applications of the ADM4073F?
Typical applications include cell phones, notebook computers, PDAs, automotive systems, and industrial control systems.
