SA5775A Datasheet, PDF (6/10 Pages) NXP Semiconductors – Differential air core meter driver

Philips Semiconductors
Differential air-core meter driver
Product specification
SA5775A
AC ELECTRICAL CHARACTERISTICS
V_DD = 7.5 to 18 V; V_CC = 4.5 to 5.5 V; T_A = –40 to +85°C
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
UNIT
MIN
TYP
MAX
FS_CLK
TS_CLKH
TS_CLKL
TRO
TFO
TSU
Input frequency
S_CLK high time
S_CLK low time
Output rise time DO
Output fall time DO
DI set-up time
175
V_CC = 5.5 V
175
0.75 to V_CC –1.2 V, C_L = 90 pF
V_CC –1.2 V to 0.75, C_L = 90 pF
75
1.6
MHz
ns
ns
75
ns
75
ns
ns
THI
DI hold time
75
ns
TYPICAL APPLICATION
METER
14V
Data Out
FROM
MICROPROCESSOR
1
5
SIN–
DATA_OUT
9
DATA_IN
6
S_CLK
2
15 16
SIN+
COS– COS+
DO ⁵
SA5775A
V_IGN
NC
4
12
SGD
ST 11
D_GND 13
OE
V_CC
A_GND 14
8
7
10 µF
5V
Figure 3. Typical application
SL00455
SCLK
FSCLKL
TSCLKL
Tr
TSCLKH
Tf
1999 Sep 20
SCLK
CS
DI
BIT9
BIT8..1
BIT0
T_SU T_HI
DO
BIT0
PREVIOUS WORD
SL00456
Figure 4. Serial interface timing
6