SA5775AD [NXP]
Differential air core meter driver; 差分空芯仪驱动程序
| 型号： | SA5775AD |
| 厂家： | 
NXP |
| 描述： | Differential air core meter driver |
| 文件： | 总10页 (文件大小：115K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
SA5775A
Differential air core meter driver
Product specification
1999 Sep 20
Supersedes data of 1997 Feb 24
Philips
Semiconductors
Philips Semiconductors
Product specification
Differential air-core meter driver
SA5775A
DESCRIPTION
PIN CONFIGURATION
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.
N Package
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
COS+
COS-
SIN-
SIN+
A
A
GND
GND
V
D
IGN
GND
nc
ST
DATA
OUT
FEATURES
• 10-Bit resolution (0.35 degrees)
DATA
IN
V
CS
CC
OE
• Exceptional accuracy (0.25 degrees, typical)
• High-torque capability
S
CLK
• Active differential drivers eliminate back-EMF issues
• No RFI/EMI generation issues
D Package
COS+
COS-
SIN-
1
2
28
27
• Simple serial interface
SIN+
NC
• Simple cascading capability for multiple meters
• Internal fault protection
3
26 NC
25
NC
4
NC
• Only one external component required (bypass capacitor)
5
24 NC
NC
6
23
A
A
GND
GND
NC
7
22
21
20
19
18
17
16
15
V
IGN
APPLICATION
NC
8
DATA
OUT
• Instrumentation utilizing air-core meters
9
DATA
D
IN
GND
10
11
12
13
14
NC
ST
NC
NC
NC
NC
CS
S
V
CC
OE
CLK
SL00453
Figure 1. Pin configuration
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
-40 to +85°C
ORDER CODE
SA5775AN
DWG #
SOT38-4
SOT136-1
16-Pin Plastic Dual In-Line Package (DIP)
28-Pin Small Outline Package (SO)
-40 to +85°C
SA5775AD
2
1999 Sep 20
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
15
DAC
MUX
SHUT–DOWN
LOGIC
11
12
13
14
SL00454
Figure 2. Block diagram
Table 1. SA5775A Pin Descriptions for the N Package (Dual In-Line)
Pin #
1.
Name
SIN–
SIN+
Function
Negative output connection to the SIN coil of the gauge.
Positive output connection to the SIN coil of the gauge.
2.
3.
A
GND
Ground for V
supply. Pins 3, 13 and 14 connected on the circuit board.
IGN
4.
V
Analog supply. Nominally 14.0 V.
Serial data output. Output of the internal shift register. When a new data word is shifted in, the old word is shifted out the
DATA pin.
BB
5.
DATA
OUT
OUT
6.
7.
DATA
Serial data input. A new data word is serially shifted into the part on the rising edge of S
. The data is shifted in MSB first.
IN
CLK
V
CC
5 V logic supply. The internal latches and registers are set to zero on the rising edge of this signal.
Output drivers are turned off when this input is low. Current draw is minimized.
8.
OE
9.
S
CLK
Serial clock input. Data is loaded into the part on the rising edge of S
.
CLK
10.
CS
Active high chip select input. When CS is high, the part is enabled to receive a new serial input word. The high-to-low tran-
sition of CS loads the new 10-bit word into the DAC registers and updates the output.
11.
ST
Status output from this IC to indicate that the outputs have been disabled. The outputs may be disabled due to shorted out-
puts, over temperature conditions, power up reset, or output enable control pin .This output is an open drain output .Multiple
status outputs may be wire OR’ed together .This output is low when the outputs are disabled due to a fault condition.
12.
13.
14.
15.
16.
nc
Not connected
D
Ground for V supply. Connect to Pins 3 and 14.
CC
GND
A
Ground for V supply. Connect to Pins 3 and 13.
GND
BB
COS–
COS+
Negative output connection to the COS coil of the gauge.
Positive output connection to the COS coil of the gauge.
3
1999 Sep 20
Philips Semiconductors
Product specification
Differential air-core meter driver
SA5775A
Table 2. SA5775A Pin Descriptions for the D Package (Small Outline)
Pin #
1.
Name
SIN–
SIN+
NC
Function
Negative output connection to the SIN coil of the gauge.
2.
Positive output connection to the SIN coil of the gauge.
3.
No connect
No connect
No connect
4.
NC
5.
NC
6.
A
GND
Ground for V
supply. Pins 6, 20 and 23 connected on the circuit board.
IGN
7.
V
Analog supply. Nominally 14.0V.
Serial data output. Output of the internal shift register. When a new data word is shifted in, the old word is shifted out the
DATA pin.
IGN
8.
DATA
OUT
OUT
9.
DATA
NC
Serial data input. A new data word is serially shifted into the part on the rising edge of S . The data is shifted in MSB first.
IN
CLK
10.
11.
12.
13.
14.
15.
No connect
NC
No connect
NC
No connect
V
CC
5 V logic supply. The internal latches and registers are set to zero on the rising edge of this signal.
Output drivers are turned off when this input is low. Current draw is minimized.
OE
S
CLK
Serial clock input. Data is loaded into the part on the rising edge of S
.
CLK
Active high chip select input. When CS is high, the part is enabled to receive a new serial input word. The high-to-low
transition of CS loads the new 10-bit word into the DAC registers and updates the output.
16.
CS
17.
18.
NC
NC
No connect
No connect
Status output from this IC to indicate that the outputs have been disabled. The outputs may be disabled due to shorted out-
puts, over temperature conditions, power up reset, or output enable control pin. This output is an open drain output. Multiple
status outputs may be wire OR’ed together. This output is low when the outputs are disabled due to a fault condition.
19.
ST
20.
21.
22.
23.
24.
25.
26.
27.
28.
D
Ground for V supply. Connect to Pins 6 and 23.
GND
CC
NC
No connect
No connect
NC
A
GND
Ground for V supply. Connect to Pins 6 and 20.
BB
NC
No connect
NC
NC
No connect
No connect
COS–
COS+
Negative output connection to the COS coil of the gauge.
Positive output connection to the COS coil of the gauge.
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
-1 to +23
-1 to +6
UNIT
V
V
Analog supply
Digital supply
V
V
V
V
IGN
CC
D
to A
Ground difference
-0.3 to +0.3
-1 to +7
GND
IN
GND
V
P
Digital input voltage, Data In, OE, CS, S
CLK
1
Power dissipation (T = 25°C)
A
mW
D
D and N packages
Ambient operating temperature
Junction temperature
1500
–40 to +85
150
°C
°C
T
A
T
J
°C/W
θ
DIP and SO packages
90
JA
NOTE:
1. For power dissipation ratings in still air, derate above 25°C at the following rates:
D and N packages at 12mW/°C
4
1999 Sep 20
Philips Semiconductors
Product specification
Differential air-core meter driver
SA5775A
DC ELECTRICAL CHARACTERISTICS
V
IGN
= 7.5 to 18 V; V = 4.5 to 5.5 V; T = –40 to +85°C.
CC A
LIMITS
TYP
SYMBOL
PARAMETER
TEST CONDITIONS
UNIT
MAX
MIN
V
Ignition supply voltage
Ignition supply current
7.5
18
25
V
IGN
V
V
= 18 V no load
IGN
BB
= 18 V with load
I
mA
mA
IGN
1,2
R
, R = R
160
1
LC
LS
LMIN
I
Logic supply current
Output high voltage
Output low voltage
V
CC
= 5.5 V
CC
V
OH
V
OL
V
OL
Data out I = 300 µA
V
– 0.8
OH
CC
Data out I = 1.5 mA
0.4
0.8
25
V
V
OL
Status
Status
I
= 2.8 mA
OL
I
ST, V = 5 V
µA
OH
CC
V
V
Input high voltage
Input low voltage
CS, S
CS, S
, DATA
, DATA
0.7 x V
V
IH
IL
CLK
CLK
IN
CC
0.3 x V
10
V
IN
CC
I
IH
I
IL
Input high current
Input low current
CS, S
CS, S
, DATA , V = 0.7 x V
µA
CLK
CLK
IN
IN
CC
CC
, DATA , V = 0.3 x V
10
µA
IN
IN
3
A
CC
Output function accuracy
R
, R = R
LMIN
–0.5
0.5
Degree
LC
LS
I
Output shut-down current
COS+, COS–, SIN+, SIN–
SD
I
V
IGN
V
IGN
V
IGN
V
IGN
= V
= V
= V
= V
97
43
85
43
500
300
500
300
mA
mA
mA
mA
SINK
IGN (MAX)
IGN (MIN)
IGN (MAX)
IGN (MIN)
I
SOURCE
V
V
= V
= V
IGN
IGN
IGN (MAX)
IGN (MIN)
V
DRIVE
Coil drive voltage
68
78
%V
IGN
T = 85°C
215
171
138
Ω
Ω
Ω
A
T = 25°C
R
Minimum load resistance
A
LMIN
T = –40°C
A
NOTE:
1. See Test Circuit.
2. Maximum current is when output is 45 degrees; T = –40°C, and R = 138 Ω.
A
L
3. See Table “Output function accuracy”
Table 3.
Output function accuracy
Ideal
0
Nominal
0.176
Input Code
0
45
45.176
128
256
384
512
640
768
1023
90
90.176
135
180
225
270
360
135.176
180.176
225.176
270.176
359.820
N = Binary Input Code
Equation for Output Angle (θ) vs Output Voltage
Equation
Quadrant
–1
I
θ = tan | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |
–1
II
θ = 180° +tan | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |
–1
III
IV
θ = 180° +tan | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |
–1
θ = 360° +tan | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |
5
1999 Sep 20
Philips Semiconductors
Product specification
Differential air-core meter driver
SA5775A
AC ELECTRICAL CHARACTERISTICS
V
DD
= 7.5 to 18 V; V = 4.5 to 5.5 V; T = –40 to +85°C
CC
A
LIMITS
TYP
SYMBOL
PARAMETER
TEST CONDITIONS
UNIT
MAX
MIN
FS
TS
TS
Input frequency
1.6
MHz
ns
CLK
S
CLK
S
CLK
high time
low time
175
175
CLKH
CLKL
V
CC
= 5.5 V
ns
TRO
TFO
TSU
THI
Output rise time DO
Output fall time DO
DI set-up time
0.75 to V –1.2 V, C = 90 pF
75
75
ns
CC
L
V
CC
–1.2 V to 0.75, C = 90 pF
ns
L
75
75
ns
DI hold time
ns
TYPICAL APPLICATION
METER
14V
Data Out
1
SIN–
2
15
16
SIN+
COS– COS+
DO
5
5
DATA
OUT
4
V
IGN
12
9
6
SA5775A
SGD
NC
ST
µ
F
10
DATA
S
IN
11
13
D
GND
FROM
MICROPROCESSOR
CLK
14
A
OE
GND
V
CC
8
7
5V
SL00455
Figure 3. Typical application
FSCLKL
TSCLKH
TSCLKL
SCLK
Tr
Tf
SCLK
CS
DI
BIT9
BIT8..1
BIT0
T
T
SU
HI
BIT0
PREVIOUS WORD
DO
SL00456
Figure 4. Serial interface timing
6
1999 Sep 20
Philips Semiconductors
Product specification
Differential air-core meter driver
SA5775A
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SL00457
Figure 5. SA5775A Test circuit, N package
15
COS
10
SIN
5
0
0
127
255
383
511
639
767
895
1023
–5
–10
–15
INPUT CODE
SL00458
Figure 6. SA5775A output voltages (V
= 14 V)
IGN
0.8
0.6
V
R
= 14V
BB
= 200Ω
L
0.4
T = 25
0.2
0.0
–0.2
–0.4
–0.6
–0.8
0
127
255
383
511
639
767
895
1023
INPUT CODE
SL00459
Figure 7. Error graph
7
1999 Sep 20
Philips Semiconductors
Product specification
Differential air-core meter driver
SA5775A
DIP16: plastic dual in-line package; 16 leads (300 mil)
SOT38-4
8
1999 Sep 20
Philips Semiconductors
Product specification
Differential air-core meter driver
SA5775A
SO28: plastic small outline package; 28 leads; body width 7.5mm
SOT136-1
9
1999 Sep 20
Philips Semiconductors
Product specification
Differential air-core meter driver
SA5775A
Data sheet status
[1]
Data sheet
status
Product
status
Definition
Objective
specification
Development
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
Preliminary
specification
Qualification
This data sheet contains preliminary data, and supplementary data will be published at a later date.
Philips Semiconductors reserves the right to make changes at any time without notice in order to
improve design and supply the best possible product.
Product
specification
Production
This data sheet contains final specifications. Philips Semiconductors reserves the right to make
changes at any time without notice in order to improve design and supply the best possible product.
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Righttomakechanges—PhilipsSemiconductorsreservestherighttomakechanges, withoutnotice, intheproducts, includingcircuits,standard
cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Copyright Philips Electronics North America Corporation 1999
All rights reserved. Printed in U.S.A.
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Date of release: 09-99
Document order number:
9397 750 06445
Philips
Semiconductors
相关型号：
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