LTC2261-14_15 Datasheet, PDF (29/34 Pages) Linear Technology – 14-Bit, 125/105/80Msps Ultralow Power 1.8V ADCs

LTC2261-14
LTC2260-14/LTC2259-14
Typical Applications
LTC2261 Schematic
ANALOG INPUT
T2
MABAES0060
••
R9 10Ω
R10 10Ω
R15 100Ω
R39
33.2Ω
1%
R40
33.2Ω
1%
C51
4.7pF
SENSE
C23
1µF
R14
1k
C17
V_DD
1µF
R16
100Ω
C12
0.1µF
C13
1µF
C19
0.1µF
40 39 38 37 36 35 34 33 32 31
V_DD SENSE V_REF V_CM OF⁺ OF^– D13 D12 D11 D10
C15
0.1µF
C21
0.1µF
V_DD
C18
0.1µF
R27 10Ω _{1 AIN+}
R28 10Ω _{2 AIN–}
3 _GND
4 _REFH
C20
2.2µF
5 _REFH
6 _REFL
7 _REFL
PAR/SER 8 _PAR/SER
9 _VDD
10 _VDD
LTC2261CUJ
D9 ³⁰
D8 ²⁹
CLKOUT^{+ 28}
CLKOUT^{– 27}
OV_DD ²⁶
OGND ²⁵
D7 ²⁴
D6 ²³
D5 ²²
D4 ²¹
GND ENC⁺ ENC^– CS SCK SDI SDO D0 D1 D2 D3
41 11 12 13 14 15 16 17 18 19 20
DIGITAL
OUTPUTS
0V_DD
C37
0.1µF
DIGITAL
OUTPUTS
ENCODE CLOCK
R13
100Ω
SPI BUS
226114 TA02
For more information www.linear.com/LTC2261-14
226114fc
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