Datasheet

6
LTC1409
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Input Common Mode Rejection vs
Input Frequency
Power Supply Feedthrough vs
Ripple Frequency
RIPPLE FREQUENCY (Hz)
AMPLITUDE OF POWER SUPPLY FEEDTHROUGH (dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
1k 100k 1M 10M
LTC1409 • TPC08
10k
V
SS
V
DD
DGND
INPUT FREQUENCY (Hz)
1k
COMMON MODE REJECTION (dB)
80
70
60
50
40
30
20
10
0
10k 100k
LT1409 • TPC09
1M 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.
PI FU CTIO S
UU U
+A
IN
(Pin 1): Positive Analog Input, ±2.5V.
–A
IN
(Pin 2): Negative Analog Input, ±2.5V.
V
REF
(Pin 3): 2.50V Reference Output.
REFCOMP (Pin 4): 4.06V Reference Output. Bypass to
AGND using 10µF tantalum in parallel with 0.1µF or
10µF 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.
Integral Nonlinearity vs
Output Code
OUTPUT CODE
0
INL ERROR (LSB)
1.00
0.50
0
–0.50
–1.00
512 1024 1536 2048
LT1409 • TPC07
2560 3072 3584 4096
Differential Nonlinearity vs
Output Code
OUTPUT CODE
0
DNL ERROR (LSB)
1.00
0.50
0
–0.50
–1.00
512 1024 1536 2048
LT1409 • TPC06
2560 3072 3584 4096