参数资料
型号: LTC6943IGN#TRPBF
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC BUILDNG BLK SWCAP DUAL 16SSOP
标准包装: 2,500
应用: 切换电容构建块
输入电压: 5 V ~ 18 V
输出数: 1
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-SSOP
包装: 带卷 (TR)
LTC6943
TYPICAL PERFOR A CE CHARACTERISTICS
(Test Circuits 2 through 4)
Oscillator Frequency, f OSC
vs Ambient Temperature
C OSC Pin I SINK , I SOURCE
vs Supply Voltage
Break-Before-Make Time, t NOV ,
vs Supply Voltage
350
300
C OSC = 0pF
100
I SINK, T A = –55 ° C
80
70
T A = 25 ° C
250
200
150
V S = 5V
V S = 10V
V S = 15V
75
50
I SINK, T A = 25 ° C
I SOURCE, T A = –55 ° C
I SOURCE, T A = 25 ° C
60
50
40
100
50
25
I SINK, T A = 125 ° C
I SOURCE, T A = 125 ° C
30
20
0
–50 –25
0
25
50
75
100
125
0
0
2
4
6
8
10
12
14
16
18
10
0
2
4
6
8 10 12
14 16 18 20
TEMPERATURE ( ° C)
V SUPPLY (V)
BLOCK DIAGRA
6943 TPC10
S1A 6
S3A 11
S1B 5
S3B 16
SH A 8
9 C A+
10 C A–
CHARGE
BALANCING
CIRCUITRY
1 C B+
2 C B–
LTC1043 ? TPC11
7 S2A
12 S4A
4 S2B
13 S4B
LTC1043 ? TPC12
CHARGE
BALANCING
CIRCUITRY
THE CHARGE BALANCING CIRCUITRY SAMPLES THE VOLTAGE
NON-OVERLAPPING
CLOCK
3 V +
AT S3 WITH RESPECT TO S4 (PIN 14 HIGH) AND INJECTS A
SMALL CHARGE AT THE C + PIN (PIN 14 LOW).
THIS BOOSTS THE CMRR WHEN THE LTC6943 IS USED AS AN
V –
V +
C OSC 14
OSCILLATOR
15 V –
INSTRUMENTATION AMPLIFIER FRONT END.
FOR MINIMUM CHARGE INJECTION IN OTHER TYPES OF
APPLICATIONS, S3A AND S3B SHOULD BE GROUNDED
THE SWITCHES ARE TIMED AS SHOWN WITH PIN 14 HIGH
6943 ? BD01
6943f
4
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