LTC1606 Linear Technology, LTC1606 Datasheet - Page 6

• Manufacturer Part Number: LTC1606
• Description: 16-Bit/ 250ksps/ Single Supply ADC
• Manufacturer: Linear Technology

FUNCTIONAL BLOCK DIAGRA
LTC1606
CS (Pin 25): Chip Select. Internally OR’d with R/C. With
R/C low, a falling edge on CS will initiate a conversion.
With R/C high, a falling edge on CS will enable the output
data.
BUSY (Pin 26): Output Shows Converter Status. It is low
when a conversion is in progress. Data valid on the rising
edge of BUSY. CS or R/C must be high when BUSY rises
TEST CIRCUITS
PIN
6
U
DBN
U
A. Hi-Z TO V
(4.096V)
FUNCTIONS
AGND1
AGND2
DGND
CAP
REF
V
U
IN
1k
U
OH
Load Circuit for Access Timing
AND V
7.35k
4k
OL
U
REF BUF
TO V
1.64x
2.5V REF
30pF
OH
9k
INTERNAL
CLOCK
2.5k
B. Hi-Z TO V
DBN
OL
AND V
5V
1k
W
16-BIT CAPACITIVE DAC
SUCCESSIVE APPROXIMATION
30pF
OH
CS
TO V
1606 TC01
C
C
SAMPLE
SAMPLE
CONTROL LOGIC
OL
REGISTER
R/C
or another conversion will start without time for signal
acquisition.
V
a 0.1 F ceramic and a 10 F tantalum capacitor.
V
27.
ANA
DIG
DBN
BYTE
(Pin 28): 5V Digital Supply. Connect directly to Pin
(Pin 27): 5V Analog Supply. Bypass to ground with
BUSY
A. V
1k
Load Circuit for Output Float Delay
OH
ZEROING SWITCHES
16
TO Hi-Z
+
–
COMP
OUTPUT LATCHES
30pF
DBN
1606 BD
B. V
OL
5V
•
•
•
TO Hi-Z
1k
D15
D0
V
V
30pF
ANA
DIG
1606 TC02