SA5775A Datasheet, PDF (2/10 Pages) NXP Semiconductors – Differential air core meter driver

Philips Semiconductors
Differential air-core meter driver
Product specification
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.
FEATURES
• 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
• Instrumentation utilizing air-core meters
ORDERING INFORMATION
DESCRIPTION
16-Pin Plastic Dual In-Line Package (DIP)
28-Pin Small Outline Package (SO)
PIN CONFIGURATION
N Package
SIN- ¹
SIN+ 2
A_GND 3
V_IGN ⁴
DATA_OUT ⁵
DATA_IN ⁶
V_CC 7
OE 8
16 COS+
15 _COS-
14 A_GND
13 _DGND
12 nc
11 ST
10 CS
9 S_CLK
SIN- 1
SIN+ ²
NC 3
NC 4
NC 5
A_GND ⁶
V_IGN ⁷
DATA_OUT ⁸
DATA_IN ⁹
NC 10
NC 11
NC 12
V_CC 13
OE 14
D Package
28 COS+
27 COS-
26 NC
25 NC
24 NC
23 _AGND
22 NC
21 NC
20 _DGND
19 _ST
18 NC
17 NC
16 CS
15 S_CLK
Figure 1. Pin configuration
SL00453
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