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Ultra-Low-Noise Current and Optical Sensing Amplifiers
The photodiodes from Analog Devices amplify sensor signal currents by a factor of 24 while adding minimal noise
The ADPD2210 from ADI's is a low-noise current amplifier designed to allow the use of smaller photodiodes by amplifying sensor signal currents by a factor of 24 while adding minimal noise. This amplification provides the system sensitivity of a large photodiode with the benefits of a smaller photodiode. A minimum linearity of 60 dB allows accurate extraction of very small, time-variant signals on top of large DC or low-frequency offsets. The ADPD2211/ADPD2212/ADPD2214 are optical sensors optimized for biomedical applications. Very low power consumption and near theoretical signal-to-noise ratio (SNR) are achieved by packaging an ultra-low-capacitance, deep-junction silicon photodiode operated in zero-bias photoconductive mode with a low-noise current amplifier.
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| Product Features | ADPD2210 | ADPD2211 | ADPD2212 | ADPD2214 |
|---|---|---|---|---|
| Current Gain | 24 | 24 | 24 | 24 |
| Noise Floor, Input Referred | 80 fA/√Hz | 90 fA/√Hz | 90 fA/√Hz | 90 fA/√Hz |
| Photodiode Area | None | 1.8 mm² | 2.5 mm² | 4.5 mm² |
| Bandwidth | 85 kHz | 400 kHz | 400 kHz | 75 kHz |
| Integration Level | Amplifier only - bring your own photodiode | Amplifier and photodiode | Amplifier, photodiode, and optical rectifier | Amplifier, photodiode, and optical rectifier |
| Optical Filter | N/A | None | IR cut | Green band-pass |
| Power Supply | 1.8 V to 5.0 V | 1.8 V to 5.0 V | 1.8 V to 5.0 V | 1.8 V to 5.0 V |
| Package | 2 mm x 2 mm LFCSP | 3 mm x 3 mm clear mold LFCSP | 3 mm x 4 mm clear mold LFCSP | 4 mm x 4 mm clear mold LFCSP |
Eval Boards
| Kuva | Manufacturer Part Number | Kuvaus | Saatavana oleva määrä | Hinta | Näytä tiedot | |
|---|---|---|---|---|---|---|
 |  | EVALZ-ADPD2210 | EVAL BOARD FOR ADPD2210 | 1 - Immediate | $24.65 | Näytä tiedot |
|  | EVALZ-ADPD2211 | EVAL BOARD FOR ADPD2211 | 0 - Immediate | $24.65 | Näytä tiedot |
|  | EVALZ-ADPD2212 | EVAL BOARD FOR ADPD2212 | 0 - Immediate | See Page for Pricing | Näytä tiedot |
|  | EVALZ-ADPD2214 | EVAL BOARD FOR ADPD2214 | 0 - Immediate | See Page for Pricing | Näytä tiedot |
ADPD2210
| Kuva | Manufacturer Part Number | Kuvaus | Saatavana oleva määrä | Hinta | Näytä tiedot | |
|---|---|---|---|---|---|---|
|  | ADPD2210ACPZ-R7 | IC AMPLIFIER 6LFCSP | 2584 - Immediate | $5.21 | Näytä tiedot |
ADPD2211
| Kuva | Manufacturer Part Number | Kuvaus | Saatavana oleva määrä | Hinta | Näytä tiedot | |
|---|---|---|---|---|---|---|
|  | ADPD2211ACPZ-R7 | SENSOR OPT 528NM AMBIENT 8 WDFN | 1539 - Immediate | $7.95 | Näytä tiedot |
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