16-bit high-speed USB devices
• Acquisition rates up to 500 kS/s
• 8 differential (DIFF) or 16 singleended (SE) analog inputs
• Up to 2 analog outputs
• 8 digital I/O
• Two 32-bit counter inputs
• One timer output
• OEM version available
Thông số kỹ thuật
Common mode rejection ratio
fIN = 60 Hz, all input ranges: 86 dB
Crosstalk
Adjacent differential mode channels, DC to 100 kHz: –75 dB
Input coupling: DC
Sampling rate (software-selectable)
USB-1608G: 0.0149 Hz to 250 kHz
USB-1608GX/1608GX-2AO: 0.0149 Hz to 500 kHz
Trigger source: TRIG (refer to “External Trigger” on page 5)
Sample clock source: Internal A/D clock or external A/D clock (AICKI terminal)
Burst mode: Software-selectable using the internal A/D clock; always enabled
when using the external clock (AICKI terminal)
USB-1608G: 4 µs
USB-1608GX/1608GX-2AO: 2 µs
Throughput
Software paced: 33 to 4000 S/s typ, system dependent
Hardware paced
USB-1608G: 250 kS/s max
USB-1608GX/1608GX-2AO: 500 kS/s max
Channel gain queue: Up to 16 elements; software-selectable range for each channel
Warm-up time:15 minutes min
Analog Input
A/D converter type: Successive approximation
ADC resolution: 16 bits
Number of channels: 8 DIFF, 16 SE; software-selectable
Input voltage range: ±10 V, ±5 V, ±2 V, ±1 V; software-selectable per channel
Absolute maximum input voltage
CHx relative to AGND: ±25 V max (power on); ±15 V max (power off)
Input Impedance: 1 GΩ (power on); 820 Ω (power off)
Input bias current: ±10 nA
Input bandwidth, all input ranges, small signal (–3 dB)
USB-1608G: 750 kHz
USB-1608GX/1608GX-2AO: 870 kHz
Input capacitance: 60 pf
Maximum working voltage (signal + common mode)
±10 V range: ±10.2 V max relative to AGND
±5 V range: ±10.2 V max relative to AGND
±2 V range: ±9.5 V max relative to AGND
±1 V range: ±9.0 V max relative to AGND
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