SA5777A Ver la hoja de datos (PDF) - Philips Electronics
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SA5777A Datasheet PDF : 12 Pages
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Philips Semiconductors
Dual air-core gauge driver
Product specification
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.
FEATURES
• 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
• Instrumentation utilizing air-core meters
ORDERING INFORMATION
DESCRIPTION
16-Pin Plastic Dual In-Line Package (DIP)
28-Pin Plastic Small Outline Package (SO)
PIN CONFIGURATION
N Package
C1– 1
C1+ 2
AGND 3
VBB 4
DATAOUT 5
DATAIN 6
VCC 7
OE 8
16 C2+
15 C2-
14 COM
13 AGND
12 DGND
11 ST
10 CS
9 SCLK
D Package
C1– 1
C1+ 2
NC 3
NC 4
NC 5
AGND 6
VBB 7
DATAOUT 8
DATAIN 9
NC 10
NC 11
NC 12
VCC 13
OE 14
28 C2+
27 C2-
26 NC
25 NC
24 COM
23 AGND
22 NC
21 NC
20 DGND
19 ST
18 NC
17 NC
16 CS
15 SCLK
SL00460
Figure 1. Pin configuration
TEMPERATURE RANGE
-40 to +85°C
-40 to +85°C
ORDER CODE
SA5777AN
SA5777AD
DWG #
SOT38-4
SOT136-1
1999 Sep 20
2
853-1930 022368
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