The AMC3330 is a precision, isolated amplifier with a fully integrated, isolated DC/DC converter that allows single-supply operation from the low-side of the device. The reinforced capacitive isolation barrier is certified according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 and separates sections of the system that operate on different common-mode voltage levels and protects low-voltage domains from damage.
The input of the AMC3330 is optimized for direct connection to high-impedance, voltage-signal sources such as a resistor-divider network to sense high-voltage signals. The integrated isolated DC/DC converter allows measurement of non-ground-referenced signals and makes the device a unique solution for noisy, space-constrained applications.
The excellent performance of the device supports accurate voltage monitoring and control. The integrated DC/DC converter fault-detection and diagnostic output pin of the AMC3330 simplify system-level design and diagnostics.
The AMC3330 is specified over the temperature range of –40°C to +125°C.
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | DCDC_OUT | Power | High-side output of the isolated DC/DC converter; connect this pin to the HLDO_IN pin.(1) |
2 | DCDC_HGND | Power Ground | High-side ground reference for the isolated DC/DC converter; connect this pin to the HGND pin. |
3 | HLDO_IN | Power | Input of the high-side low-dropout (LDO) regulator; connect this pin to the DCDC_OUT pin.(1) |
4 | NC | — | No internal connection. Connect this pin to the high-side ground or leave this pin unconnected (floating). |
5 | HLDO_OUT | Power | Output of the high-side LDO.(1) |
6 | INP | Analog Input | Noninverting analog input. |
7 | INN | Analog Input | Inverting analog input. Connect this pin to HGND. |
8 | HGND | Signal Ground | High-side analog ground; connect this pin to the DCDC_HGND pin. |
9 | GND | Signal Ground | Low-side analog ground; connect this pin to the DCDC_GND pin. |
10 | OUTN | Analog Output | Inverting analog output. |
11 | OUTP | Analog Output | Noninverting analog output. |
12 | VDD | Power | Low-side power supply.(1) |
13 | LDO_OUT | Power | Output of the low-side LDO; connect this pin to the DCDC_IN pin.(1) |
14 | DIAG | Digital Output | Active-low, open-drain status indicator output; connect this pin to the pullup supply (for example, VDD) using a resistor or leave this pin floating if not used. |
15 | DCDC_GND | Power Ground | Low-side ground reference for the isolated DC/DC converter; connect this pin to the GND pin. |
16 | DCDC_IN | Power | Low-side input of the isolated DC/DC converter; connect this pin to the LDO_OUT pin.(1) |