Specifications
Names of Index | Typ |
Response spectrum (μm)*1 | 0.95 ±0.05~1.7 ±0.05 |
Pixel filling rate(%) | 100 |
Peak quantum efficiency(%) | ≥70@1.55μm |
Peak detection rate*2(cm·Hz/w) | ≥5 × 1012 |
Peak sensitivity(A/W) | ≥0.8 |
Effective pixel rate(%)*3 | >99.5 |
Response heterogeneity(%) | ≤5 |
Playback mode | IWR 、ITR 、ITR+CDS 、NDRO 、IMRO |
Readout rate (MHz) | Range 2 to 22, typical 12 |
Number of readout channels | 2 、4 、8，optional |
Full frame rate(Hz) *4 | 350 |
Gain gear | 3 |
Conversion gain(μV/e-) | 1 (LG) 、25 (MG) 、110 (HG) |
Dynamic range(dB) | ≥55 (MG) |
*1 Focal plane temperature=25℃
*2 Focal plane temperature=20℃ ,Mid-range gain, integration time 8ms, signal amplitude close to half-well condition
*3 The percentage of pixels for which the response signal deviates less than 50% from the mean for the near-half-well condition
*4 The number of readout channels =8, the readout mode is IWR, and the readout rate is 20MHz.
Quantum efficiency (typical value)
Schematic diagram of detector working principle and connection mode
Mechanical capacity
Name of index | TYP |
Length x width x height (mm) | 32 ×25.5 ×7.9 |
Weight(g) | ~21 |
Focal plane scale | 640 ×512 |
Pixel center distance(μm) | 15 |
Pixel Size(μm) | 15 × 15 |
Sensing Area(mm) | 9.6 ×7.68 |
Environment and power consumption parameters are used
Name of index | Typ |
Operation Temperature(℃) | -20~+60 |
Storage Temperature (℃) | -40~+70 |
Typical power(W)* | <0.35 |
Temperature cycling, random vibration | Comply with the GJB 548B-2005 standard design |
Dimensions and Pin definitions
Mechanical Specifications
The detector is In the form of metal packaging, filled with atmospheric pressure and high purity nitrogen gas, the metal shell is made of FeNiCoSi alloy, the surface is electroplated with Ni/Au layer, the window welding method is IN brazing, and the capping form is resistance welding.The overall dimensions of the detector are 32mm (L)×25.5mm (W)×7.9mm (H). There are 41 pins Φ0.45mm on the shell from the bottom, the use of bilateral double rows of "product" layout, single side adjacent two rows of pins spacing is 1.27mm, a single row of pin spacing is 1.6mm, used for focal plane power and command input, focal plane detection signal and temperature sensor electrical extraction; Two pins of Φ1.0mm on the side are used for the connection of the thermoelectric refrigerator. Four via holes of Φ1.8mm distributed on both sides of the tube shell are used for the fixation of the detector.
The appearance and size of the mechanical interface are shown below.
Optical configuation
The detector has a 640×512 element InGaAs focal plane, a pixel center distance of 15μm, a square shape, and a photosensitive size of 15μm× 15μm.The design distance between the detector and the upper surface of the package structure is 2.41 ±0.2mm, the design distance between the detector and the lower surface of the window is 1.41 ±0.2mm, and the design distance between the detector and the lower surface of the diaphragm is 0.71 ±0.2mm. The window material is sapphire, the thickness is 0.6 ±0.02mm, the window refractive index is 1.76, the surface is coated with AR film, and the transmittance in the response band is >. The window transmittance area is 13.5mm× 11.5mm, and the aperture transmittance size is 10.2mm× 8.3mm.The center of the sensitive surface is located at the center of the detector with a relative position offset ≤0.05mm and a relative rotation displacement ≤0.02mm.
Schematic of the detector pin
Description of the detector pin
Pin number | Name of pin | Input/output | Pin function | Reference value |
1 | NC | - | Empty pin, unattached |
|
2 | CLK | Input | Detector master clock | Digital voltage
High level 3.3V, low level 0V |
3 | ST | Output | The frame output identifier | See Note 3 for details |
4 | ROW_ST | Output | The line output identifier | See Note 3 for details |
5 | ERROR | Output | Serial port command word input check bit | See Note 3 for details |
6 | SERIAL | Input | Serial port command word input | Digital voltage high level 3.3V, low level 0V |
7 | RESET | Input | External reset input (high level valid) | Digital voltage high level 3.3V, low level 0V |
8 | NC | - | Same as 1 |
|
9/10 | TS | - | Temperature sensor, which measures the electrical resistance value through two pins, to feedback the operating temperature of the focal plane |
|
11 | NC | - | Same as 1 |
|
12 | NC | - | No pins, easy to identify the direction |
|
13 | NC | - | Same as 1 |
|
14 | NC | - | Same as 1 |
|
15 | GNDA | - | Analog power ground, corresponding to VDDA |
|
16 | VDDA | Output | Analog power supply | Simulation 3.6V, Driving current >90mA |
17 | VDDL | Input | VDCC | Simulation 3.6V, Driving current >90mA |
18 | VOUT1 | Output | Eight-Channel、four channels、The first channel in a two-channel output mode |
|
19 | VOUT2 | Output | The first channel in a two-channel output mode、The second channel in a two-channel output mode |
|
20 | VOUT3 | Output | Eight-Channel、The third channel in a four-channel output mode |
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21 | VOUT4 | Output | Eight-Channel、The fourth channel in a four-channel output mode |
|
22 | VOUT5 | Output | The fifth channel in the eight-channel output mode |
|
23 | VOUT6 | Output | The sixth channel in the eight-channel output mode |
|
24 | VOUT7 | Output | The seventh channel in the eight-channel output mode |
|
25 | VOUT8 | Output | The eighth channel in the eight-channel output mode |
|
26 | SUBPV | Input | Detector common terminal | Simulation 2.3V,
Driving current >5mA |
27 | NC | - |
| Must be suspended |
28 | VREF | - | reference voltage | See Recommended peripheral circuit for details |
29 | GND | - | common ground point |
|
30~34 | NC | - | Same as 1 |
|
35 | VD33 | Input | Digital IO power supply | Simulation 3.3V, Driving current >15mA |
36/37 | NC | - |
| Must be suspended |
38 | GND | - | Same as 29 |
|
39 | VD18 | Input | Digital logic power supply | Simulation 1.8V, Driving current >30mA |
40 | VTEMP | Output | Circuit integrated temperature sensor voltage output, voltage gain -6mV/K |
|
41 | INT | Input | Integral control input | Digital voltage High level 3.3V, low level 0V |
42 | NC | - | Same as 1 |
|
43 | TEC- | - | Thermoelectric refrigerator connection foot - |
|
44 | TEC+ | - | The thermoelectric refrigerator is connected to the foot +, the foot + is connected to the high electrical potential for refrigeration, and the foot is connected to the low potential for heating |
|
Matters needing attention：
The DC input directly affects the overall noise of the detector, so the ripple noise of the DC input power supply is required as follows：
1) Each power supply voltage ripple noise requirements：
a) VDDA: < 1mV;
b) VDDL: < 10mV;
c) VD33:<5mV;
d) VD18:<5mV;
2) Signal output (VOUT1~VOUT8) load requirements： Cload<25pf; rload="">100kΩ;
3) Logical output signal range: logical output signal is high and low level digital signal, wherein
a) low level： 0~0.3V;
b) high level： (VD33-0.3V)~VD33;
c) Logic output load requirements： Cload< 15pF;
4) The reference voltage is internally generated with a typical value of 2.24V.
