TLP7820
Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.
What the TLP7820 does
The TLP7820 is an isolation amplifier designed for current sensing in electronic motor drives, specifically for motor phase and rail current sensing. It features a gain accuracy of ±0.5%, a bandwidth of 230 kHz, and an operating temperature range of -40 to 105 °C. The device offers common-mode transient immunity of 15 kV/µs and meets UL, cUL, VDE, and CQC safety standards. Engineers typically use this component to sense analog voltage drops resulting from motor currents flowing through external resistors, enabling precise monitoring in power inverter applications.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| supply voltage range | 4.5 V | 5 V | 5.5 V | 8. Recommended Operating Conditions (Note) | Toshiba datasheet, p. 3 — 8. Recommended Operating Conditions (Note) |
| input offset voltage drift | — | 2 µV/°C | 6 µV/°C | 9. Electrical Characteristics | Toshiba datasheet, p. 4 — 9. Electrical Characteristics |
| input offset voltage | -600 µV | 900 µV | 2.4 mV | Ta = 25 °C; 9. Electrical Characteristics | Toshiba datasheet, p. 4 — 9. Electrical Characteristics |
| cmrr | — | 80 dB | — | 9. Electrical Characteristics | Toshiba datasheet, p. 4 — 9. Electrical Characteristics |
| operating temperature | -40 °C | — | 105 °C | 8. Recommended Operating Conditions (Note) | Toshiba datasheet, p. 3 — 8. Recommended Operating Conditions (Note) |
| power dissipation | — | — | 72 mW | pd; 2020-06-25 | Toshiba datasheet, p. 3 — 2020-06-25 |
| input bias current | -1 µA | -55 nA | — | VIN+ = 0 V, Ta = 25 °C; 9. Electrical Characteristics | Toshiba datasheet, p. 4 — 9. Electrical Characteristics |
| isolation voltage | 5 kV | — | — | AC, 60 s; isolation(note 1); 11. Isolation Characteristics (Unless otherwise specified, $ Ta = 25\, ^{\circ}C $) | Toshiba datasheet, p. 5 — 11. Isolation Characteristics (Unless otherwise specified, ) |
| propagation delay | — | 1.9 µs | 2.3 µs | VIN+ = 0 to 200 mV/μs stepCL = 15 pF; vinto(10 %-10 %); 4 2020-06-25 | Toshiba datasheet, p. 5 — 4 2020-06-25 |
| rise time | — | 1.7 µs | — | VIN+ = 0 to 200 mV/μs stepCL = 15 pF; voutrise; 4 2020-06-25 | Toshiba datasheet, p. 5 — 4 2020-06-25 |
| output voltage high | — | 2.5 V | — | VIN+ = 400 mV, Ta = 25 °C; 9. Electrical Characteristics | Toshiba datasheet, p. 4 — 9. Electrical Characteristics |
| output voltage low | — | 900 µV | — | VIN+ = -400 mV, Ta = 25 °C; 9. Electrical Characteristics | Toshiba datasheet, p. 4 — 9. Electrical Characteristics |
| cmti | 15 GV/s | 20 GV/s | — | VCM = 1 kV, Ta = 25 °C; common; 4 2020-06-25 | Toshiba datasheet, p. 5 — 4 2020-06-25 |
Closest matches to TLP7820
Frequently asked questions
What is the CMRR specified in the Electrical Characteristics section?
The CMRR is 80 dB.
What is the common-mode transient immunity (CMTI) of the TLP7820?
The CMTI is 20 GV/s at VCM = 1 kV and Ta = 25 °C.
What is the input bias current when VIN+ = 0 V and Ta = 25 °C?
The input bias current is -55 nA.
What is the input offset voltage at Ta = 25 °C?
The input offset voltage is 900 µV at Ta = 25 °C.
What is the input offset voltage drift specified in the Electrical Characteristics?
The input offset voltage drift is 2 µV/°C.
What is the isolation voltage of the TLP7820 under the condition of AC, 60 s; isolation(note 1); 11 at Ta = 25 °C?
The isolation voltage is 5 kV.
What is the maximum operating temperature for the TLP7820 under Recommended Operating Conditions (Note 8)?
The maximum operating temperature is 105 °C.
What is the output voltage high for the TLP7820 when VIN+ = 400 mV and Ta = 25 °C?
The output voltage high is 2.5 V.
What is the output voltage low specification for the TLP7820?
The output voltage low is 900 µV when VIN+ = -400 mV and Ta = 25 °C.
What is the power dissipation of the TLP7820?
The power dissipation is 72 mW.
What is the propagation delay of the TLP7820 when VIN+ = 0 to 200 mV/μs stepCL = 15 pF; vinto(10 %-10 %); 4 2020-06-25?
The propagation delay is 1.9 µs.
What is the rise time of the TLP7820 when VIN+ is a 0 to 200 mV/μs step and CL is 15 pF?
The rise time is 1.7 µs.