Dual air-core gauge driver
INTEGRATED CIRCUITS
SA5777A Dual air–core gauge driver
Product specification Supersedes data of 1997 Feb 24 1999 Sep 20...
Description
INTEGRATED CIRCUITS
SA5777A Dual air–core gauge driver
Product specification Supersedes data of 1997 Feb 24 1999 Sep 20
Philips Semiconductors
Philips Semiconductors
Product specification
Dual air-core gauge driver
SA5777A
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+ C2COM 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 component 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 COM AGND NC NC DGND ST NC NC CS SCLK
Instrumentation utilizing air-core meters
VBB 7 DATAOUT DATAIN 8 9
NC 10 NC 11...
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