ltc2182 Linear Technology Corporation, ltc2182 Datasheet - Page 18

• Manufacturer Part Number: ltc2182
• Description: 16-bit, 65msps/ 40msps/25msps Low Power Dual Adcs
• Manufacturer: Linear Technology Corporation

LTC2182/LTC2181/LTC2180
PIN FUNCTIONS
D1_0_1
45/46, 47/48, 49/50, 51/52, 53/54, 55/56, 57/58): Chan-
nel 2 Double Data Rate Digital Outputs. Two data bits are
multiplexed onto each differential output pair. The even data
bits (D0, D2, D4, D6, D8, D10, D12, D14) appear when
CLKOUT
D11, D13, D15) appear when CLKOUT
FUNCTIONAL BLOCK DIAGRAM
18
ANALOG
ANALOG
INPUT
INPUT
CH 1
CH 2
2.2µF
SENSE
0.1µF
0.1µF
V
V
V
CM1
CM2
REF
–
+
/D1_0_1
is low. The odd data bits (D1, D3, D5, D7, D9,
+
REFERENCE
to D1_14_15
S/H
S/H
SELECT
RANGE
1.25V
V
DD
GND
/2
REF
BUF
–
/D1_14_15
ADC CORE
ADC CORE
16-BIT
16-BIT
+
is high.
+
Figure 1. Functional Block Diagram
(Pins 43/44,
AMP
DIFF
REF
0.1µF
REFH
CORRECTION
REFH
LOGIC
2.2µF
OF2_1
Output. OF2_1
has occurred. The over/under flow for both channels
are multiplexed onto this pin. Channel 2 appears when
CLKOUT
is high.
REFL
REFL
–
0.1µF
/OF2_1
INTERNAL CLOCK SIGNALS
+
is low, and Channel 1 appears when CLKOUT
ENC
CLOCK/DUTY
CONTROL
CYCLE
+
+
+
is high when an overflow or underflow
(Pins 59/60): Over/Under Flow Digital
ENC
–
PAR/SER
CS
REGISTERS
CONTROL
MODE
DRIVERS
OUTPUT
SCK
SDI
SDO
218210 F01
OV
OF1
OF2
D1_15
D1_0
CLKOUT
CLKOUT
D2_15
D2_0
OGND
V
DD
•
•
•
•
•
•
DD
218210f
+
–
+