參數(shù)資料
型號(hào): CS8191XDWFR20
廠商: ON Semiconductor
文件頁數(shù): 10/12頁
文件大小: 0K
描述: IC DRVR AIRCORE TACH/SPD 20SOIC
產(chǎn)品變化通告: Product Obsolescence 30/Dec/2003
標(biāo)準(zhǔn)包裝: 1,000
類型: 驅(qū)動(dòng)器
電源電壓: 8.5 V ~ 15 V
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 20-SOIC
包裝: 帶卷 (TR)
其它名稱: CS8191XDWFR20OS
CS8191
http://onsemi.com
7
Ripple voltage on the F/V output causes pointer or needle
flutter especially at low input frequencies.
The response time of the F/V is determined by the time
constant formed by RT and C4. Increasing the value of C4
will reduce the ripple on the F/V output but will also increase
the response time. An increase in response time causes a
very slow meter movement and may be unacceptable for
many applications.
Figure 7. Partial Schematic of Input and Charge Pump
VREG
FREQIN
SQOUT
R3
2.7 V
QSQUARE
CCP
R4
VC(t)
CP+
Q1
Q2
Q3
0.25 V
2.0 V
CP–
RT
C4
F/VOUT
F to V
+
+
+
Figure 8. Timing Diagram of FREQIN and ICP
VREG
FREQIN
SQOUT
0
ICP+
tCHG
T
VCP+
0
VCC
tDCHG
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