Measurement Computing USB-1208HS-4AO - Manual (Page 18)

USB-1208HS-4AO User's Guide Specifications
18
Analog output
Table 5. Analog output specifications
Parameter Condition Specification
D/A converter Texas Instruments DAC7553
Number of channels 4 independent
Resolution 12 bits
Output range Calibrated ±10 V
Uncalibrated ±10.2 V
Output transient Host PC is reset, powered on, suspended, or
a reset command is issued to device. Duration: 3 ms typ
Amplitude: 6 V p-p typ
D/A update rate Software paced 33 to 5000 S/s typ, system dependent
Hardware paced 1 MHz max (per channel)
Sample clock source Internal D/A clock or AOCKI
Monotonicity 12 bits
Output current ±3 mA max per channel
Output short-circuit
protection Output connect to GND Unlimited duration (10 mA typ)
Output coupling DC
Power up and reset state 0 V
Output noise 0.53 mV rms
Settling time (to 0.05%) 20 V output step, (RL=5
kΩ, CL=200 pf)
5 µS max
Absolute accuracy ±0.1%
Slew rate 6.7 V/µs typ
Offset error drift 10 ppm/°C typ
Gain error drift 65 ppm/°C typ
Digital input/output
Table 6. Digital I/O specifications
Parameter Specification
Digital type CMOS
Number of I/O 16
Configuration Each bit may be configured as input (power on default) or output
Pull-up configuration The port has 47 k
Ω resistors configurable as pull-up or pull-down with an internal
jumper. The default setting is pull-down.
Digital I/O transfer rate
(system-paced) 33 to 8000 port reads/writes or single bit reads/writes per second typ, system dependent.
Input high voltage 2.0 V min
5.5 V absolute max
Input low voltage 0.8 V max
–0.5 V absolute min
0 V recommended min
Output high voltage 4.4 V min (IOH = –50 µA)
3.76 V min (IOH = –24 mA)
Output low voltage 0.1 V max (IOL = 50 µA)
0.44 V max (IOL = 24 mA)
Output current ±24 mA max per terminal (refer to Power section for additional information)