# RocketLogger Datasheet


## Absolute Maximum Ratings

| Characteristic                                                                             | MIN                   | TYP                   | MAX                   | 
| :----------------------------------------------------------------------------------------- | --------------------: | --------------------: | --------------------: | 
| Supply Voltage                                                                             | -0.3 V                |                       | 5.5 V                 | 
| Current Channel Input Current                                                              |                       |                       | ± 1 A                 | 
| Voltage Channel Input Voltage                                                              |                       |                       | ± 25 V                | 
| Voltage Channel Input Current                                                              |                       |                       | ± 10 mA               | 


## Recommended Operating Conditions

| Characteristic                                                                             | MIN                   | TYP                   | MAX                   | 
| :----------------------------------------------------------------------------------------- | --------------------: | --------------------: | --------------------: | 
| Supply Voltage                                                                             | 4.75 V                |                       | 5.25 V                | 
| Current Channel Input Current                                                              |                       |                       | ± 500 mA              | 
| Voltage Channel Input Voltage                                                              |                       |                       | ± 5.5 V               | 


## Specifications

| Characteristic                                                                             | MIN                   | TYP                   | MAX                   | 
| :----------------------------------------------------------------------------------------- | --------------------: | --------------------: | --------------------: | 
| Sampling Rate                                                                              | 1 kSPS                |                       | 64 kSPS               | 
| Maximum Measurement Duration (File Format Limit)                                           |                       |                       | 136 years             | 
| Power Consumption (64 kSPS, ± 500 mA input current, 5 V input voltage)                     |                       | 2.4 W                 |                       | 
| Power Consumption (1 kSPS, ± 500 mA input current, 5 V input voltage)                      |                       | 2.15 W                |                       | 
| Power Consumption (1 kSPS, 0 mA input current, 0 V input voltage)                          |                       | 2 W                   |                       | 
| Output Data Rate (Binary Format)                                                           |                       |                       | 8.29 GB/hour          | 
| **Voltage Channels**                                                                       |                       |                       |                       |
|   Input Voltage                                                                            | -5.5 V                |                       | 5.5 V                 | 
|   Analog Bandwidth (100 mVpp)                                                              |                       | 10 kHz                |                       | 
|   Analog Bandwidth (10 Vpp)                                                                |                       | 9.5 kHz               |                       | 
|   Noise Floor (1 kSPS, 0.1 - 500 Hz)                                                       |                       | 5.9 µVrms             |                       | 
|   Noise Floor (64 kSPS, 0.1 - 32 kHz)                                                      |                       | 1.38 mVrms            |                       | 
|   DC Accuracy (24h)                                                                        |                       | 0.02 % + 13 µV        |                       | 
|   Input Capacitance                                                                        |                       | 6 pF                  |                       | 
|   DC Input Leakage Current (Within Input Voltage Range)                                    |                       | ~ 5 pA                |                       | 
|   Temperature Drift (Design Data) [/°C]                                                    |                       | 1.23 µV + 61 ppm      |                       | 
|   Crosstalk from Current Channel (500 mA, referenced to GND on SMA connector)              |                       | 1.25 mV               |                       | 
|   Crosstalk between Voltage Channels                                                       |                       | < 2 µV                |                       |
| **Digital Voltage Channels**                                                               |                       |                       |                       |
|   Input Voltage                                                                            | -6 V                  |                       | 6 V                   | 
|   Threshold Voltage (Shared, Adjustable)                                                   | -6 V                  |                       | 6 V                   | 
|   Input Offset Voltage (Design Data)                                                       |                       | 3 mV                  |                       | 
|   Propagation Delay (H -> L, 1 Vpp)                                                        |                       | 6 µs                  |                       | 
|   Propagation Delay (L -> H, 1 Vpp)                                                        |                       | 4 µs                  |                       | 
|   DC Input Leakage Current (Design Data, Comparator Only, Within Input Voltage Range)      |                       | < 1 pA                |                       | 
|   Input Capacitance                                                                        |                       | 4 pF                  |                       | 
| **Current Channels**                                                                       |                       |                       |                       |
|   HI Input Current                                                                         | -500 mA               |                       | 500 mA                | 
|   Analog Bandwidth (4 mApp)                                                                |                       | 9.5 kHz               |                       | 
|   Analog Bandwidth (400 mApp)                                                              |                       | 9.5 kHz               |                       | 
|   HI RMS Noise Floor (1 kSPS, 0.1 - 500 Hz)                                                |                       | 1.34 µVrms            |                       | 
|   HI RMS Noise Floor (64 kSPS, 0.1 - 32 kHz)                                               |                       | 50.6 µVrms            |                       | 
|   HI DC Accuracy (24h, possibly limited by SMU)                                            |                       | 0.09 % + 3 µA         |                       | 
|   HI DC Accuracy (24h, 0 to ± 100 mA)                                                      |                       | 0.02 % + 3 µA         |                       | 
|   HI Temperature Drift (Design Data) [/°C]                                                 |                       | 5.39 µA + 121 ppm     |                       | 
|   LOW Input Current                                                                        | -2 mA                 |                       | 2 mA                  | 
|   LOW RMS Noise Floor (1 kSPS, 0.1 - 500 Hz)                                               |                       | 1.33 nArms            |                       | 
|   LOW RMS Noise Floor (64 kSPS, 0.1 - 32 kHz)                                              |                       | 276 nArms             |                       | 
|   LOW DC Accuracy                                                                          |                       | 0.03 % + 4 nA         |                       | 
|   LOW Temperature Drift (Design Data) [/°C]                                                |                       | 206 pA + 61 ppm       |                       | 
|   DC Burden Voltage (500 mA, excluding probes)                                             |                       | 53 mV                 |                       | 
|   Range Switching Time (0 to 5-500 mA step)                                                |                       | 1.4 µs                |                       | 
|   Transient Burden Voltage (500 mA Step, during range switching)                           |                       | 430 mV                |                       | 
|   Transient Burden Voltage (100 mA Step, during range switching)                           |                       | 185 mV                |                       | 
|   Crosstalk between Current Channels                                                       |                       | -140 dB               |                       |
|   Crosstalk from Voltage Channels                                                          |                       | < 2 nA                |                       |


## Typical Characteristics

### Transient Burden Voltage

![Transient Burden Voltage](figures/range_switching_burden_voltage.png)
Oscilloscope settings: 20 MHz BW, High-Resolution Mode


### Voltage Channel Frequency Response

![Voltage Channel Frequency Response](figures/frequency_response_voltage.png)


### Current Channel Frequency Response

![Current Channel Frequency Response](figures/frequency_response_current.png)


## Physical Dimensions

| Dimension                            | Value                      |
| :----------------------------------- | :------------------------- |
| Size (RocketLogger Cape)             | 100 mm x 68 mm             |
| Size (With BeagleBone Green)         | 103 mm x 68 mm x 24 mm     |
| Size (With Case)                     | 104 mm x 83 mm x 34 mm     |

![Physical Dimensions](figures/physical_dimensions.png)