LTC2301 Linear Technology Corporation, LTC2301 Datasheet - Page 21

• Manufacturer Part Number: LTC2301
• Description: (LTC2301 / LTC2305) 12-Bit ADCs
• Manufacturer: Linear Technology Corporation

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APPLICATIONS INFORMATION
separated as much as possible. Care should be taken not
to run any digital signals alongside an analog signal. All
analog inputs should be shielded by GND. V
and V
to the pin as possible. Maintaining a low impedance path
Figure 13. Bipolar Transfer Characteristics (2’s Complement)
DD
011...111
011...110
000...001
000...000
111...111
111...110
100...001
100...000
should be bypassed to the ground plane as close
–FS/2
INPUT VOLTAGE (V)
BIPOLAR
LSB
–1
ZERO
0V
LSB
1
FS = 4.096V
1LSB = FS/2
1LSB = 1mV
FS/2 – 1LSB
23015 F13
n
REF
, REFCOMP
Figure 15a. Top Silkscreen
for the common return of these bypass capacitors is es-
sential to the low noise operation of the ADC. These traces
should be as wide as possible. See Figure 15a–15e for a
suggested layout.
Figure 14. Unipolar Transfer Characteristics (Straight Binary)
111...111
111...110
100...001
100...000
011...111
011...110
000...001
000...000
UNIPOLAR
0V
ZERO
LTC2301/LTC2305
INPUT VOLTAGE (V)
FS = 4.096V
1LSB = FS/2
1LSB = 1mV
FS – 1LSB
23015 F14
n
21
23015f