LTC1603_15 Datasheet, PDF (7/20 Pages) Linear Technology – High Speed, 16-Bit, 250ksps Sampling A/D Converter with Shutdown

W
FU CTIO AL BLOCK DIAGRA
LTC1603
+
47µF
DIFFERENTIAL
ANALOG INPUT
± 2.5V
2.2µF
3
V_REF
10µF
5V 10µF
10Ω
+
36
35
AV_DD AV_DD
4 ^REFCOMP
4.375V
1.75X
7.5k _2.5V
REF
5V 10µF
+
9
10
DV_DD
DGND
SHDN 33
CONTROL
LOGIC
AND
TIMING
CS 32
CONVST 31
RD 30
BUSY 27
µP
CONTROL
LINES
1 A_IN+
2 A_IN–
16-BIT
SAMPLING
ADC
B15 TO B0
OUTPUT
BUFFERS
AGND AGND AGND AGND V_SS
5
6
7
8 34
OV_{DD 29}
OGND 28
5V OR
3V
10µF
D15 TO D0
16-BIT
PARALLEL
BUS
11 TO 26
1603 TA01
+ ^10µF
–5V
TEST CIRCUITS
Load Circuits for Access Timing
DN
1k
C_L
5V
1k
DN
C_L
(A) Hi-Z TO VOH AND VOL TO VOH
(B) Hi-Z TO VOL AND VOH TO VOL
1603 TC01
Load Circuits for Output Float Delay
DN
1k
C_L
(A) VOH TO Hi-Z
5V
1k
DN
C_L
(B) VOL TO Hi-Z
1603 TC02
1603f
7