LTC1414 Linear Technology, LTC1414 Datasheet - Page 5

• Manufacturer Part Number: LTC1414
• Description: 14-Bit/ 2.2Msps/ Sampling A/D Converter
• Manufacturer: Linear Technology

A
when A
differentially with A
A
driven differentially with A
V
REFCOMP (Pin 4): 4.06V Reference Bypass Pin.
Bypass to AGND with 10 F ceramic or 10 F tantalum in
parallel with 0.1 F ceramic.
AGND (Pin 5): Analog Ground.
D13 to D6 (Pins 6 to 13): Data Outputs.
TYPICAL PERFOR A CE CHARACTERISTICS
PIN
IN
REF
IN
–100
–1.0
–2.0
U
–
+
–10
–20
–30
–40
–50
–60
–70
–80
–90
2.0
1.0
(Pin 2): Negative Analog Input. Can be grounded or
0
(Pin 1): Positive Analog Input. 2.5V input range
(Pin 3): 2.5V Reference Output.
0
10k
0
Spurious-Free Dynamic Range vs
Input Frequency
Integral Nonlinearity vs Output
Code
FUNCTIONS
IN
–
is grounded. 2.5V differential if A
U
4096
INPUT FREQUENCY (Hz)
100k
OUTPUT CODE
IN
8192
U
+
.
1M
IN
12288
W
+
.
1414 G07
1414 G04
U
16384
10M
–100
–120
–100
–120
–20
–40
–60
–80
–20
–40
–60
–80
IN
0
0
–
0
0
Intermodulation Distortion Plot
Power Supply Feedthrough vs
Ripple Frequency
is driven
200
2M
V
V
OGND (V
OV
RIPPLE FREQUENCY (Hz)
SS
DD
DD
FREQUENCY (kHz)
400
(V
(V
(V
RIPPLE
4M
RIPPLE
RIPPLE
RIPPLE
OGND (Pin 14): Digital Ground for the Output Drivers. Tie
to AGND
D5 to D0 (Pins 15 to 20): Data Outputs.
OV
to Pin 28 when driving 5V logic. For 3V logic, tie to supply
of the logic being driven.
DV
DGND (Pin 23): Digital Ground. Tie to AGND.
CONVST (Pin 24): Conversion Start Signal. This active low
signal starts a conversion on its falling edge.
600
= 0.02V)
= 0.2V)
DD
DD
f
f
f
= 0.5V)
SAMPLE
IN1
IN2
= 0.5V)
6M
(Pin 21): Positive Supply for the Output Drivers. Tie
= 80.566kHz
= 97.753kHz
(Pin 22): 5V Positive Supply. Tie to Pin 28.
800
= 2.2MHz
8M
1000
1414 F05a
1414 G08
10M
–1.0
–2.0
2.0
1.0
80
70
60
50
40
30
20
10
0
0
1k
Differential Nonlinearity vs
Output Code
0
Input Common Mode Rejection vs
Input Frequency
4096
10k
INPUT FREQUENCY (Hz)
OUTPUT CODE
8192
100k
LTC1414
12288
1M
LTC1414 • F12
1414 G06
5
16384
10M