LTC1409 LINER [Linear Technology], LTC1409 Datasheet - Page 6

• Manufacturer Part Number: LTC1409
• Description: 12-Bit, 800ksps Sampling A/D Converter with Shutdown
• Manufacturer: LINER [Linear Technology]

PI FU CTIO S
+ A
– A
V
REFCOMP (Pin 4): 4.06V Reference Output. Bypass to
AGND using 10 F tantalum in parallel with 0.1 F or
10 F ceramic.
AGND (Pin 5): Analog Ground.
D11 to D4 (Pins 6 to 13): Three-State Data Outputs.
DGND (Pin 14): Digital Ground for Internal Logic. Tie to
AGND.
LTC1409
6
TYPICAL PERFORMANCE CHARACTERISTICS
REF
U
IN
IN
(Pin 3): 2.50V Reference Output.
(Pin 1): Positive Analog Input, 2.5V.
(Pin 2): Negative Analog Input, 2.5V.
U
–0.50
–1.00
–100
1.00
0.50
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
0
1k
Integral Nonlinearity vs
Output Code
0
Power Supply Feedthrough vs
Ripple Frequency
512 1024 1536 2048
U
10k
RIPPLE FREQUENCY (Hz)
OUTPUT CODE
W
V
100k
SS
V
DD
2560 3072 3584 4096
DGND
U
1M
LTC1409 • TPC08
LT1409 • TPC07
10M
D3 to D0 (Pins 15 to 18): Three-State Data Outputs.
OGND (Pin 19): Digital Ground for Output Drivers. Tie
to AGND.
NAP/SLP (Pin 20): Power Shutdown Mode. Selects the
mode invoked by the SHDN pin. Low selects Sleep
mode and high selects quick wake-up Nap mode.
SHDN (Pin 21): Power Shutdown Input. A low logic
level will invoke the Shutdown mode selected by the
NAP/SLP pin.
RD (Pin 22): Read Input. This enables the output
drivers when CS is low.
–0.50
–1.00
1.00
0.50
80
70
60
50
40
30
20
10
0
0
1k
Input Common Mode Rejection vs
Input Frequency
0
Differential Nonlinearity vs
Output Code
512 1024 1536 2048
10k
INPUT FREQUENCY (Hz)
OUTPUT CODE
100k
2560 3072 3584 4096
1M
LT1409 • TPC06
LT1409 • TPC09
10M