SA5775A Datasheet, PDF (5/10 Pages) NXP Semiconductors – Differential air core meter driver

Philips Semiconductors
Differential air-core meter driver
Product specification
SA5775A
DC ELECTRICAL CHARACTERISTICS
V_IGN = 7.5 to 18 V; V_CC = 4.5 to 5.5 V; T_A = –40 to +85°C.
SYMBOL
PARAMETER
TEST CONDITIONS
V_IGN
Ignition supply voltage
I_IGN
Ignition supply current
V_IGN = 18 V no load
V_BB = 18 V with load
R_LC, R_LS = R_LMIN1,2
I_CC
Logic supply current
V_CC = 5.5 V
V_OH
Output high voltage
Data out I_OH = 300 µA
V_OL
Output low voltage
Data out I_OL = 1.5 mA
V_OL Status
I_OL = 2.8 mA
I_OH Status
ST, V_CC = 5 V
V_IH
Input high voltage
CS, S_CLK, DATA_IN
V_IL
Input low voltage
CS, S_CLK, DATA_IN
I_IH
Input high current
CS, S_CLK, DATA_IN, V_IN = 0.7 x V_CC
I_IL
Input low current
A_CC
Output function accuracy³
CS, S_CLK, DATA_IN, V_IN = 0.3 x V_CC
R_LC, R_LS = R_LMIN
I_SD
Output shut-down current
COS+, COS–, SIN+, SIN–
I_SINK
I_SOURCE
V_IGN = V_{IGN (MAX)}
V_IGN = V_{IGN (MIN)}
V_IGN = V_{IGN (MAX)}
V_IGN = V_{IGN (MIN)}
V_DRIVE
Coil drive voltage
V_IGN = V_{IGN (MAX)}
V_IGN = V_{IGN (MIN)}
R_LMIN
Minimum load resistance
T_A = 85°C
T_A = 25°C
T_A = –40°C
NOTE:
1. See Test Circuit.
2. Maximum current is when output is 45 degrees; T_A = –40°C, and R_L = 138 Ω.
3. See Table “Output function accuracy”
MIN
7.5
V_CC – 0.8
0.7 x V_CC
–0.5
97
43
85
43
68
215
171
138
LIMITS
TYP
MAX
18
25
160
1
UNIT
V
mA
mA
0.4
0.8
25
0.3 x V_CC
10
10
0.5
V
V
µA
V
V
µA
µA
Degree
500
mA
300
mA
500
mA
300
mA
78
%V_IGN
Ω
Ω
Ω
Table 3.
Output function accuracy
Ideal
Nominal
Input Code
0
0.176
0
45
45.176
128
90
90.176
256
135
135.176
384
180
180.176
512
225
225.176
640
270
270.176
768
360
359.820
1023
N = Binary Input Code
Equation for Output Angle (θ) vs Output Voltage
Quadrant
I
II
III
IV
Equation
θ = tan^–1 | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |
θ = 180° +tan^–1 | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |
θ = 180° +tan^–1 | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |
θ = 360° +tan^–1 | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |
1999 Sep 20
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