25 lines
1022 B
Markdown
25 lines
1022 B
Markdown
# INA Gain Block
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INA Gain Block is designed for Kirdy Laser Diode Noise Measurement. It may be also useful for other applications requiring an instrumentation amplifier. For design details, please read this [issue](https://git.m-labs.hk/sinara-hw/kirdy/issues/17).
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## Target Specs
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- Support 8V Signal Input Voltage
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- High Pass Filter with flat passband from 10Hz to 1MHz
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- 2000x Gain
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- < 3nV/rt(Hz) @ 1kHz Noise Floor
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- 50 Ohm Output Impedance
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## Configurable Options
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You can change the IC, resistors or capacitors for different applications.
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- instrumentation Amplifier
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- TI INA848/INA849 or ADI AD8428/AD8429 instrumentation Amplifier
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- INA849/AD8429: Configurable Gain
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- INA848/AD8428: Configurable LPF (2000x Gain)
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- Analog Front End
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- Single-Ended / Differential Input Signal
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- Low Pass Filter / High Pass Filter
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- Analog Output
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- Configurable DC Bias Voltage
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- Low Pass Filter / High Pass Filter
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## Usage Notes
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For best noise floor, external ultra-low noise LDO is needed to be used. |