B&B Electronics 4 Channel Input Buffer Board SDAIBB Manuale Utente Scaricare il pdf (Pagina 9)

Documentation Number UD128A8D4602 Manual Chapter 1 5

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph 353-91-792444 – Fax 353-91-792445

Specifications

Digital Inputs/Outputs

Inputs/Outputs: 8 channels

- Group selectable as 8 Inputs, 8 Outputs or 4 of each.

Note: (a) Power-up clears and sets all digital channels to input.

(b) The last value output is held (latched) until changed.

Input Ratings

- Vin High: 2.0V minimum

- Vin Low: 0.8V maximum

- Input leakage current: +/- 1.0µAmax.

Output Ratings

Recommended Load Impedance: 209 ohms or greater

Minimum Load Impedance: 209 ohms

Maximum Sink/Source Current: 24mA per output

Vout High: 5V nominal, 3.76 V minimum at Iout = 24mA

Vout Low: 0V nominal, 0.44 V maximum at Iout = 24mA

Digital Reference Output Voltage

Line Name: DIG +Vref

+5VDC output for digital pull-up, +4.5V minimum

Output Impedance: 54 ohms

Analog Inputs

Inputs: 8 channels

- Pair selectable as Single Ended or Differential inputs

- Differential input pair channels: 0-1, 2-3, 4-5, 6-7

- Max Voltage on Differential input(-) pin: 1.25V

Resolution: 12-bit A/D input: 4096 Steps (values 0 to 4095)

Input Impedance: >10 Tera ohms (x10 to 12

power)

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B&B Electronics 4 Channel Input Buffer Board SDAIBB Manuale Utente Pagina 9