| Cheetah 640 TE1 400 SWIR / vSWIR | Cheetah 640 TE1 800 SWIR / vSWIR | Cheetah 640 TE1 1700 SWIR / vSWIR | Cheetah 640 TE3 |
Image format [pixels] | 640 x 512 | 640 x 512 | 640 x 512 | 640 x 512 |
Pixel pitch [µm] | 20 | 20 | 20 | 20 |
Detector type | InGaAs photodiode array with CTIA ROIC | InGaAs photodiode array with CTIA ROIC | InGaAs photodiode array with CTIA ROIC | InGaAs photodiode array with CTIA ROIC |
Sensor cooling | TE cooler | TE cooler | TE cooler | 3-stage TE cooler |
Integration type | Snapshot – global shutter | Snapshot – global shutter | Snapshot – global shutter | Snapshot – global shutter |
Active area and diagonal [mm] | 12.8 x 10.24 [diagonal 16.4] | 12.8 x 10.24 [diagonal 16.4] | 12.8 x 10.24 [diagonal 16.4] | 12.8 x 10.24 [diagonal 16.4] |
Optical fill factor | 100% | 100% | 100% | 100% |
Spectral range [nm] | 900 – 1700 [SWIR]; 500 – 1700 [vSWIR] | 900 – 1700 [SWIR]; 500 – 1700 [vSWIR] | 900 – 1700 [SWIR]; 500 – 1700 [vSWIR] | 900 – 1700 [SWIR] |
Quantum efficiency | ~80% [typical peak value] | ~80% [typical peak value] | ~80% [typical peak value] | ~80% [typical peak value] |
Gain modes | High Gain [HG] & High Dynamic Range [HDR] | High Gain [HG] & High Dynamic Range [HDR] | High Gain [HG] & High Dynamic Range [HDR] | High Gain [HG] & High Dynamic Range [HDR] |
Full well capacities [electrons] | 45k [HG] & 500k [HDR] | 45k [HG] & 500k [HDR] | 45k [HG] & 500k [HDR] | 45k [HG] & 500k [HDR] |
Read noise [electrons] | 120 [HG] & 500 [HDR] | 120 [HG] & 500 [HDR] | 120 [HG] & 500 [HDR] | 120 [HG] & 500 [HDR] |
Dark current [electrons/second] | <100k [at 288K sensor temp and 150 mV reverse bias]; <200k for vSWIR | <100k [at 288K sensor temp and 150 mV reverse bias]; <200k for vSWIR | <100k [at 288K sensor temp and 150 mV reverse bias]; <200k for vSWIR | <1000 [at 233K sensor temp and 150 mV reverse bias] |
Read out mode | ITR & IWR | ITR & IWR | ITR & IWR | ITR & IWR |
Pixel operability | >99% | >99% | >99% | >99% |
Preconfigured exposure time range [ms] | 0.1 to 40 in HG, 0.1 to 20 in HDR | 0.1 to 40 in HG, 0.1 to 20 in HDR | 0.1 to 40 in HG, 0.1 to 20 in HDR | Maximum exposure is up to 20s in HG |
Max frame rate [Hz] [full frame] | 444 | 865 | 1730 | 111 |
Region of interest | Yes | Yes | Yes | Yes |
Min region size [pixels] | 32 x 4 [step 16 x 4] | 32 x 4 [step 16 x 4] | 32 x 4 [step 16 x 4] | 32 x 4 [step 16 x 4] |
Max frame rate [Hz] [min region size] | >100000 | >100000 | >100000 | >10000 |
Analog-to-Digital [ADC] [bits] | 14 | 14 | 14 | 14 |
Command and control | CameraLink | CameraLink | CameraLink | CameraLink |
Digital output format | CameraLink [12 bit base] – 1 cable | CameraLink [12 bit medium] – 2 cables | CameraLink [12 bit dual medium] – 4 cables CameraLink [8 bit full] – 2 cables | CameraLink [14 bit base] – 1 cable |
Trigger | In or out via trigger connector [configurable] | In or out via trigger connector [configurable] | In or out via trigger connector [configurable] | In or out via trigger connector [configurable] |