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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
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LTC2188
6
2188f
DigiTal inpuTs anD ouTpuTs
 The 
l
 denotes the specifications which apply over the full operating 
temperature range, otherwise specifications are at T
A
 = 25°C. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ENCODE INPUTS (ENC
+
, ENC
–  
)
Differential Encode Mode (ENC
–
 Not Tied to GND)
V
ID
Differential Input Voltage
(Note 8)
l
0.2
V
V
ICM
Common Mode Input Voltage
Internally Set 
Externally Set (Note 8)
 
l
 
1.1
1.2
 
1.6
V 
V
V
IN
Input Voltage Range
ENC
+
, ENC
–
 to GND
l
0.2
3.6
V
R
IN
Input Resistance
(See Figure 10)
10
kΩ
C
IN
Input Capacitance
(Note 8)
3.5
pF
Single-Ended Encode Mode (ENC
–
 Tied to GND)
V
IH
High Level Input Voltage
V
DD
 = 1.8V
l
1.2
V
V
IL
Low Level Input Voltage
V
DD
 = 1.8V
l
0.6
V
V
IN
Input Voltage Range
ENC
+
 to GND
l
0
3.6
V
R
IN
Input Resistance
(See Figure 11)
30
kΩ
C
IN
Input Capacitance
(Note 8)
3.5
pF
DIGITAL INPUTS (CS, SDI, SCK in Serial or Parallel Programming Mode. SDO in Parallel Programming Mode)
V
IH
High Level Input Voltage
V
DD
 = 1.8V
l
1.3
V
V
IL
Low Level Input Voltage
V
DD
 = 1.8V
l
0.6
V
I
IN
Input Current
V
IN
 = 0V to 3.6V
l
–10
10
µA
C
IN
Input Capacitance
(Note 8)
3
pF
SDO OUTPUT (Serial Programming Mode. Open-Drain Output. Requires 2kΩ Pull-Up Resistor if SDO is Used)
R
OL
Logic Low Output Resistance to GND
V
DD
 = 1.8V, SDO = 0V
200
Ω
I
OH
Logic High Output Leakage Current
SDO = 0V to 3.6V
l
–10
10
µA
C
OUT
Output Capacitance
(Note 8)
3
pF
DIGITAL DATA OUTPUTS (CMOS MODES: FULL DATA RATE AND DOUBLE DATA RATE)
OV
DD
 = 1.8V
V
OH
High Level Output Voltage
I
O
 = –500µA
l
1.750
1.790
V
V
OL
Low Level Output Voltage
I
O
 = 500µA
l
0.010
0.050
V
OV
DD
 = 1.5V
V
OH
High Level Output Voltage
I
O
 = –500µA
1.488
V
V
OL
Low Level Output Voltage
I
O
 = 500µA
0.010
V
OV
DD
 = 1.2V
V
OH
High Level Output Voltage
I
O
 = –500µA
1.185
V
V
OL
Low Level Output Voltage
I
O
 = 500µA
0.010
V
DIGITAL DATA OUTPUTS (LVDS MODE)
V
OD
Differential Output Voltage
100Ω Differential Load, 3.5mA Mode 
100Ω Differential Load, 1.75mA Mode
l
247
350 
175
454
mV 
mV
V
OS
Common Mode Output Voltage
100Ω Differential Load, 3.5mA Mode 
100Ω Differential Load, 1.75mA Mode
l
1.125
1.250 
1.250
1.375
V 
V
R
TERM
On-Chip Termination Resistance
Termination Enabled, OV
DD
 = 1.8V
100
Ω