SA5777A Datasheet | Philips Semiconductors

DESCRIPTION The SA5777A is a monolithic driver for controlling air-core (or differential) meters typically used in automotive instrument cluster applications. The circuit interfaces with a microprocessor through a serial bus and directly drives the air-core meter. The SA5777A has 10-bit resolution (0.35 degree) and is guaranteed to be monotonic. Data can be shifted through the part, allowing several SA5777As to be cascaded with only one chip-select line. On-chip current shut down logic protects the circuit from external faults. PIN CONFIGURATION N Package C1- C1+ AGND VBB 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 C2+ C2 AGND DGND ST CS SCLK FEATURES DATAOUT DATAIN VCC OE - 10-Bit resolution (0.35 degrees) - Exceptional accuracy (0.5 degrees, typical) - High-torque capability - Active differential drivers eliminate back-EMF issues - No RFI/EMI generation issues - Simple serial interface - Simple cascading capability for multiple meters - Internal fault protection - Only one external ponent required (bypass capacitor) APPLICATION D Package C1- 1 C1+ 2 NC 3 NC 4 NC 5 AGND 6 28 27 26 25 24 23 22 21 20 19 18 17 16 15 C2+ C2NC NC AGND NC NC DGND ST NC NC CS SCLK - Instrumentation utilizing air-core meters VBB 7 DATAOUT DATAIN 8 9 NC 10 NC 11 NC 12 VCC 13 OE 14 SL00460 Figure 1. Pin configuration ORDERING INFORMATION DESCRIPTION 16-Pin Plastic Dual In-Line Package (DIP) 28-Pin Plastic Small Outline Package (SO) TEMPERATURE RANGE -40 to +85°C -40 to +85°C ORDER CODE SA5777AN SA5777AD DWG # SOT38-4 SOT136-1 1999 Sep 20 853-1930 022368 Philips Semiconductors Product specification Dual air-core gauge driver BLOCK DIAGRAM VBB OE C2+ 7 + - BIT DAC MUX C2- VBB VBB/2 8 7 + - BIT DAC MUX C1+ 8 C1-...