PBM3960-1 - Ericsson

PBM3960-1 Microstepping Controller/Dual Digital-to-Analog Converter

PBM 3960/1 is a dual 7-bit+sign, Digital-to-Analog Converter (DAC) especially developed to be used together with the PBL 3771/1, Precision Stepper Motor driver in micro-stepping applications. The circuit has a set of input registers connected to an 8-bit data port for easy interfacing directly to a microprocessor. Two registers are used to store the data for.

Features

• Analog control voltages from 3 V down to 0.0 V.
• High-speed microprocessor interface.
• Automatic fast/slow current decay control.
• Full-scale error ±1 LSB.
• Interfaces directly with TTL levels and CMOS devices.
• Fast conversion speed, 3 µs.
• Matches PBL 3771. WR C DA- Data 1 D E1 CS C D R Level 2 R Level 1 Digit Comp E1 C E D R CD 1 DA 1 E E2 A0 E3 C D A1 E4 D7 - D0 C D R R DA- Data 2 D/A E D/A Digit Comp E4 C D R DA E 2 CD 2 E Sign 2 POR RESET R V ss Figure 1. Block Diagram. P B 22-pin plastic DIP 28-pin plastic PLCC M M B /1 P 60 39 E Sign 1 39 PBM 3960/1 60.