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參數(shù)資料
| 型號： | SA5777AN |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 外設及接口 |
| 英文描述： | Dual air-core gauge driver |
| 中文描述： | BUF OR INV BASED PRPHL DRVR, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 116K |
| 代理商： | SA5777AN |
Philips Semiconductors
Product specification
SA5777A
Dual air-core gauge driver
1999 Sep 20
3
BLOCK DIAGRAM
8
9-BIT LATCH
DFAULT
7 DAC
10-BIT
SHIFT REGISTER
9-BIT LATCH
10-BIT
SHIFT REGISTER
7 DAC
MUX
MUX
8
CS
ST
COM
C2+
C2–
C1+
C1–
V
BB
V
BB
V
CC
D
IN
S
CLK
D
OUT
V
BB
/2
OE
SL00461
Figure 2. Block diagram
Table 1.
Pin #
1.
2.
3.
4.
SA5777A Pin Descriptions for the N Package (Dual In-Line)
Name
C1–
Negative output connection to the TAN coil of meter #1.
C1+
Positive output connection to the TAN coil of meter #1.
A
GND
Ground for V
BB
supply. Pins 3, 12 and 13 should be connected on the circuit board.
V
BB
Analog supply. Nominally 13.5 V.
DATA
OUT
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
OUT
pin. DATA
OUT
output is always active.
DATA
IN
Serial data input. A new data word is serially shifted into the part on the rising edge of S
CLK
. The data is shifted in MSB
first, gauge 1 first.
V
CC
5 V logic supply. The internal latches and registers are set to zero on the rising edge of this signal.
OE
Output drivers are turned off when this input is low.
S
CLK
Serial clock input. Data is loaded into the part on the rising edge of S
CLK
. Data is shifted out of DATA
OUT
on the falling
edge of S
CLK
.
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
transition of CS loads the new 20-bit word into the DAC registers and updates the output.
ST
Status output. This is an open drain output and goes low when the coil output buffers (C1+, C1–, C2+, C2–, COM) have
been disabled. The coil outputs may be disabled due to shorted outputs, over-temperature conditions, power-on reset,
or by the output enable (OE) pin. Multiple status outputs , ST, may be wire OR’ed together.
D
GND
Ground for V
CC
supply. Connect to Pins 3 and 13.
A
GND
Ground for V
BB
supply. Connect to Pins 3 and 12.
COM
Output drive for biased coils. This output will be 1/2 of V
BB
.
C2–
Negative output connection to the TAN coil of meter #2.
C2+
Positive output connection to the TAN coil of meter #2.
Function
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
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