Analog DevicesADUM4195-1BRIZ-R7Special Purpose Amplifiers

ADUM4195-1: Isolated Amplifier with Fixed Gain and Single-Ended Output

The ADuM4195-1 is an isolation amplifier based on Analog Devices, Inc., iCoupler® technology. The ADuM4195-1 has very low offset and gain error, making it ideal for many isolated voltage sensing applications.

Unlike optocoupler-based solutions, which have an uncertain current transfer ratio over a lifetime and is unstable at high temperatures, the ADuM4195-1 transfer function does not change over its lifetime, and is stable over a wide temperature range of −40°C to +125°C.

The ADuM4195-1 has been certified to provide galvanic isolation up to 5 kV rms according to UL1577.

The ADuM4195-1 is packaged in a small 8-lead wide body SOIC package with increased creepage.

Key Features and Benefits

• •  Wide input/output range 0.25 V to 4.3 V (typ)
• •  High-impedance input for isolated voltage measurement
• •  Fixed gain = 1
• •  Low offset error and drift: ±5 mV (maximum) at 25°C and −22 μV/°C (typical)
• •  Low gain error and drift: ±0.5% (max) and ±42 ppm/°C (maximum)
• •  Voltage-supply range
• •  V_DD1: 4.5 V to 5.5 V
• •  V_DD2: 4.5 V to 5.5 V
• •  Bandwidth: 210 kHz
• •  Isolation voltage: 5000 V rms
• •  Safety and regulatory approvals (pending)
• •  UL recognition: 5000 V RMS for 1 minute per UL 1577
• •  CSA Component Acceptance Notice #5A
• •  VDE certificate of conformity
• •  DIN V VDE V 0884-11 (VDE V 0884-11)
• •  V_IORM = 1401 V peak
• •  Wide temperature range
• •  −40°C to +125°C ambient operation
• •  150°C maximum junction temperature
• •  AEC-Q100 qualified for automotive applications

Applications

• •  Inverters
• •  DC-DC converter
• •  On-board chargers

Evaluation Board

The ADuM4195 can be evaluated with the EVAL-ADUM4195EBZ.

Block Diagrams and Tables