Isolation Amplifiers

Isolation Amplifiers are instruments that have been designed to measure the smallest current and voltage signals in the presence of high common mode voltage by providing electrical safety barrier and electrical isolation. They are differential amplifiers that protect data acquisition components from common mode voltages, which are potential differences between instrument ground and signal ground.

How to select a correct isolation amplifier?
There are two main types of isolation amplifiers and the decision of using one or another may depend on several aspects and user needs:

• Single-ended, floating common - an isolated and quasi-balanced input (the floating common is typically connected to the (-) input of differential amplifier). Suitable for off-ground measurements up to breakdown voltage of the isolation barrier, and exhibits very good common mode rejection (100 dB typical).

• Differential, floating common - an isolated and balanced input. Suitable for off-ground measurements of the breakdown voltage of the isolation barrier, and exhibits superb common mode rejection (>120 dB).

What is typical application of isolation amplifiers?
Isolation amplifiers are commonly used in test and measurement or medical devices. Also, they are popular in solar and fuel cells construction to profile the performance of individual series-connected voltage cells.

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Description Price Power Supply Type Typical Dual Supply Voltage Typical Single Supply Voltage Isolation Mode Rejection Rail to Rail Number of Channels per Chip Maximum Voltage Gain Mounting Type Package Type Pin Count Dimensions Height Width Length
RS庫存編號 174-3675
製造零件編號HCPL-7800A-500E
BrandBroadcom
HK$53.818
個 (在毎卷:1000)
單位
Single - Maximum of 5.5 V 76dB - 1 8.08V/V Surface Mount DIP 8 9.8 x 6.35 x 3.56mm 3.56mm 6.35mm 9.8mm
RS庫存編號 922-6762
製造零件編號ACPL-C870-000E
BrandBroadcom
HK$36.585
毎管:80 個
單位
Single - 4.5 → 5.5 V -78dB - 1 1.03V/V Surface Mount SSOP 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS庫存編號 786-3158
製造零件編號ADUM4190ARIZ
HK$28.025
/個 (每包:2個)
單位
Single - 3 → 20 V - - 1 80dB Surface Mount SOIC 16 12.85 x 7.6 x 2.44mm 2.44mm 7.6mm 12.85mm
RS庫存編號 121-9702
製造零件編號AMC1200SDUB
HK$41.602
毎管:50 個
單位
Dual 5V - - - 1 8 Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS庫存編號 300-8259
製造零件編號ISO124U
HK$187.55
單位
Dual ±12 V, ±15 V, ±5 V, ±9 V - - - 1 0dB Surface Mount SOP 8 2.3 x 17.9 x 7.5mm 2.3mm 7.5mm 17.9mm
RS庫存編號 145-7696
製造零件編號ADUM3190BRQZ
HK$22.124
毎管:98 個
單位
Single - 3 → 20 V - - 2 80dB Surface Mount QSOP 16 5 x 4.01 x 1.65mm 1.65mm 4.01mm 5mm
RS庫存編號 178-3206
製造零件編號ACPL-C784-000E
BrandBroadcom
HK$43.92
毎管:80 個
單位
Single - 5 V 76dB - 1 18.49dB Surface Mount SSOP 8 3.18 x 5.85 x 6.81mm 3.18mm 6.81mm 5.85mm
RS庫存編號 734-4966
製造零件編號ACPL-785J-000E
BrandBroadcom
HK$52.28
單位
Single - 4.5 → 5.5 V - - - - Surface Mount SOIC 16 10.312 x 7.493 x 3.505mm 3.505mm 7.493mm 10.31mm
RS庫存編號 714-0209
製造零件編號ACPL-C79A-000E
BrandBroadcom
HK$50.99
單位
Single - 4.5 → 5.5 V - - 2 8.28V/V Surface Mount SSOP 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS庫存編號 450-903
製造零件編號HCPL-7800A-300E
BrandBroadcom
HK$101.54
單位
Single - 5 V 76dB - 1 18.14dB Surface Mount PDIP SMD 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm
RS庫存編號 922-6719
製造零件編號ACPL-C790-000E
BrandBroadcom
HK$40.242
毎管:80 個
單位
Single - 3 → 5.5 V - - 1 8.44V/V Surface Mount SOIC 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS庫存編號 178-3192
製造零件編號ACPL-790B-300E
BrandBroadcom
HK$53.05
毎管:50 個
單位
Single - 3 → 5.5 V - - 1 8.24V/V Through Hole PDIP 8 9.8 x 6.35 x 3.56mm 3.56mm 6.35mm 9.8mm
RS庫存編號 922-5655
製造零件編號HCPL-7800-300E
BrandBroadcom
HK$68.80
毎管:50 個
單位
Single - 5 V 76dB - 1 18.31dB Surface Mount PDIP SMD 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm
RS庫存編號 450-868
製造零件編號HCPL-7800-300E
BrandBroadcom
HK$74.96
單位
Single - 5 V 76dB - 1 18.31dB Surface Mount PDIP SMD 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm
RS庫存編號 633-391
製造零件編號AD204JY
HK$594.89
單位
- - - 130dB - 1 40dB Through Hole SIP 11 15.9 x 52.8 x 6.3mm 15.9mm 6.3mm 52.8mm
RS庫存編號 922-6765
製造零件編號ACPL-C87A-000E
BrandBroadcom
HK$46.29
毎管:80 個
單位
Single - 4.5 → 5.5 V -78dB - 1 1.01V/V Surface Mount SSOP 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS庫存編號 369-5819
製造零件編號AD210JN
HK$888.193
毎管:9 個
單位
Single - 15 V 120dB - 1 40dB Through Hole PDIP 12 8.91 x 53.3 x 25.4mm 8.91mm 25.4mm 53.3mm
RS庫存編號 910-8226
製造零件編號ACNT-H790-000E
BrandBroadcom
HK$75.47
單位
Single - 3 → 5.5 (VDD2) V, 4.5 → 5.5 (VDD1) V - - - 8.42V/V Surface Mount SOIC 8 13.6 x 6.24 x 3.4mm 3.4mm 6.24mm 13.6mm
RS庫存編號 922-5687
製造零件編號HCPL-7800A-000E
BrandBroadcom
HK$88.23
毎管:50 個
單位
Single - 5 V 76dB - 1 18.14dB Through Hole PDIP 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm
RS庫存編號 106-7013
製造零件編號AD202JN
HK$709.773
毎管:9 個
單位
Single - 15 V 130dB - 1 40dB Through Hole PDIP 11 8.9 x 53.3 x 17.8mm 8.9mm 17.8mm 53.3mm