SA5777A Datasheet, PDF (2/12 Pages) NXP Semiconductors – Dual air-core gauge driver

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
A_GND 3
V_BB ⁴
DATA_OUT ⁵
DATA_IN ⁶
V_CC 7
OE 8
16 C2+
15 _C2-
14 _COM
13 _AGND
12 D_GND
11 ST
10 CS
9 S_CLK
D Package
C1– 1
C1+ 2
NC 3
NC 4
NC 5
A_GND ⁶
V_BB ⁷
DATA_OUT ⁸
DATA_IN ⁹
NC 10
NC 11
NC 12
V_CC 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 S_CLK
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