參數(shù)資料
型號(hào): LM98725
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 模擬信號(hào)調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PDSO56
封裝: TSSOP-56
文件頁(yè)數(shù): 10/14頁(yè)
文件大?。?/td> 464K
代理商: LM98725
Pin Descriptions
Pin
Name
I/O
Typ
Res
Description
1
PHIC2
O
D
PU
Configurable high speed sensor timing output.
2
PHIC1
O
D
PD
Configurable high speed sensor timing output.
3
SH1
O
D
PU
Configurable low speed sensor timing output.
4
CE
I
D
Chip Serial Interface Address Setting Input
CE Level
Address
V
D
01
Float
10
DGND
00
5
CAL
I
D
PD
Initiate calibration sequence. Leave unconnected or tie to DGND if unused.
6
RESET
I
D
PU
Active-low master reset. NC when function not being used.
7
SH_R
I
D
PD
External request for an SH interval.
8
SDI
I
D
PD
Serial Interface Data Input.
9
SDO
O
D
Serial Interface Data Output.
10
SCLK
I
D
PD
Serial Interface shift register clock.
11
SEN
I
D
PU
Active-low chip enable for the Serial Interface.
12
V
A
P
Analog power supply. Bypass voltage source with 4.7
μF and pin with 0.1μF to AGND.
13
AGND
P
Analog ground return.
14
V
A
P
Analog power supply. Bypass voltage source with 4.7
μF and pin with 0.1μF to AGND.
15
VREFB
O
A
Bottom of ADC reference. Bypass with a 0.1
μF capacitor to ground.
16
VREFT
O
A
Top of ADC reference. Bypass with a 0.1
μF capacitor to ground.
17
V
A
P
Analog power supply. Bypass voltage source with 4.7
μF and pin with 0.1μF to AGND.
18
AGND
P
Analog ground return.
19
VCLP
IO
A
Input Clamp Voltage. Normally bypassed with a 0.1
μF , and a 4.7μF capacitor to AGND.
An external reference voltage may be applied to this pin.
20
V
A
P
Analog power supply. Bypass voltage source with 4.7
μF and pin with 0.1μF to AGND.
21
IBIAS
O
A
Bias setting pin. Connect a 9.0 kOhm 1% resistor to AGND.
22
AGND
P
Analog ground return.
23
OS
R
I
A
Analog input signal. Typically sensor Red output AC-coupled thru a capacitor.
24
AGND
P
Analog ground return.
25
OS
G
I
A
Analog input signal. Typically sensor Green output AC-coupled thru a capacitor.
26
AGND
P
Analog ground return.
27
OS
B
I
A
Analog input signal. Typically sensor Blue output AC-coupled thru a capacitor.
28
CPOFILT2
A
Charge Pump Filter Capacitor. Bypass this supply pin with a 0.1
μF capacitor to
CPOFILT1.
29
DGND
P
Digital ground return.
30
CPOFILT1
A
Charge Pump Filter Capacitor. Bypass this supply pin with a 0.1
μF capacitor to
CPOFILT2.
31
DVB
O
D
Digital Core Voltage bypass. Not an input. Bypass with 0.1
μF capacitor to DGND.
32
INCLK+
I
D
Clock Input. Non-Inverting input for LVDS clocks or CMOS clock input. CMOS clock is
selected when pin 29 is held at DGND, otherwise clock is configured for LVDS operation.
33
INCLK-
I
D
Clock Input. Inverting input for LVDS clocks, connect to DGND for CMOS clock.
34
DOUT7/
O
D
Bit 7 of the digital video output bus in CMOS Mode, LVDS Frame Clock+ in LVDS Mode.
TXCLK+
35
DOUT6/
O
D
Bit 6 of the digital video output bus in CMOS Mode, LVDS Frame Clock- in LVDS Mode.
TXCLK-
36
DOUT5/
O
D
Bit 5 of the digital video output bus in CMOS Mode, LVDS Data Out2+ in LVDS Mode.
TXOUT2+
5
www.national.com
LM98725
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