Differential air core meter driver - Philips
Description
INTEGRATED CIRCUITS
SA5775A Differential air core meter driver
Product specification Supersedes data of 1997 Feb 24 1999 Sep 20
Philips Semiconductors
Philips Semiconductors
Product specification
Differential air-core meter driver
SA5775A
DESCRIPTION
The SA5775A 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 SA5775A has 10-bit resolution (0.
35 degree) and is guaranteed to be monotonic.
Data can be shifted through the part, allowing several SA5775As 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
SINSIN+ AGND VIGN 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 COS+ COSAGND DGND nc ST CS SCLK
FEATURES
DATAOUT DATAIN VCC OE
• 10-Bit resolution (0.
35 degrees) • Exceptional accuracy (0.
25 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
SIN- 1 SIN+ 2 NC 3 NC 4 NC 5 AGND 6 VIGN DATAOUT DATAIN 7 8 9 28 27 26 25 24 23 22 21 20 19 18 17 16 15 COS+ COSNC NC NC AGND NC NC DGND ST NC NC CS SCLK
• Instrumentation utilizing air-core meters
NC 10 NC 11 NC 12 VCC 13 OE 14
SL00453
Figure 1.
Pin configuration
ORDERING INFORMATION
DESCRIPTION 16-Pin Plastic Dual In-Line Package (DIP) 28-Pin Small Outline Package (SO) TEMPERATURE RANGE -40 to +85°C -40 to +85°C ORDER CODE SA5775AN SA5775AD DWG # SOT38-4 SOT136-1
1999 Sep 20
2
853-1929 022369
Philips Semiconductors
Product specification
Differential air-core meter driver
SA5775A
BLOCK DIAGRAM
6 5 7 4 3 2 3 8 9 LOGIC 1
10 16
DAC
MUX
15
SHUT–DOWN LOGIC
11
12
1...
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