Linear Technology LTC2188: 16-bit 20Msps Dual ADC, DDR LVDS Outputs, 5-140MHz, req DC890, LVDS_XFMR and DC1075 DC1620A-S DC1620A-S Data Sheet
Product codes
DC1620A-S
LTC2188
18
2188f
FuncTional block DiagraM
Figure 1. Functional Block Diagram
DIFF
REF
AMP
REF
BUF
2.2µF
0.1µF
0.1µF
INTERNAL CLOCK SIGNALS
REFH
REFL
CLOCK/DUTY
CYCLE
CONTROL
RANGE
SELECT
1.25V
REFERENCE
ENC
+
REFH
REFL
ENC
–
CORRECTION
LOGIC
SDO
CS
OGND
OF1
OV
DD
D1_15
CLKOUT
–
CLKOUT
+
D1_0
2188 F01
SENSE
V
REF
CH 1
ANALOG
INPUT
2.2µF
V
CM1
0.1µF
V
DD
/2
OUTPUT
DRIVERS
MODE
CONTROL
REGISTERS
SCK
PAR/SER
SDI
•
•
•
GND
S/H
16-BIT
ADC CORE
CH 2
ANALOG
INPUT
S/H
16-BIT
ADC CORE
V
CM2
0.1µF
OF2
D2_15
D2_0
•
•
•
V
DD