LTC1417 LINER [Linear Technology], LTC1417 Datasheet - Page 19

• Manufacturer Part Number: LTC1417
• Description: Low Power 14-Bit, 400ksps Sampling ADC Converter with Serial I/O
• Manufacturer: LINER [Linear Technology]

APPLICATIONS
Serial Data Output During a Conversion
Using Internal Clock for Conversion and Data Transfer.
Figure 17 shows data from the previous conversion being
clocked out during the conversion with the LTC1417
internal clock providing both the conversion clock and the
SCLK. The internal clock has been optimized for the fastest
CLKOUT (= SCLK)
EXTCLKIN = 5
BUSY (= RD)
CONVST
D
OUT
(SAMPLE N)
t
Hi-Z
3
t
7
U
Figure 17. Internal Conversion Clock Selected. Data Transferred During Conversion Using
the ADC Clock Output as a Master Shift Clock (SCLK Driven from CLKOUT)
D13
1
t
2
INFORMATION
D12
U
2
D11
3
(= SCLK)
CLKOUT
CONVST
D10
D
OUT
W
4
D9
13
5
D13
D8
CONVST
t
V
6
12
t
IL
11
U
LTC1417
DATA (N – 1)
D7
RISING CLOCK
7
CAPTURE ON
t
CLKOUT
CONV
BUSY
SCLK
D
D6
OUT
RD
8
HOLD
D12
14
8
9
D5
12
7
9
FALLING CLOCK
t
10
CAPTURE ON
conversion time; consequently, this mode can provide the
best overall speed performance. To select the internal
conversion clock, tie EXTCLKIN (Pin 6) high. The internal
clock appears on CLKOUT (Pin 8) which can be tied to
SCLK (Pin 7) to supply the SCLK.
CLKOUT ( = SCLK)
D4
BUSY (= RD)
10
D
OUT
D3
11
D11
D2
12
(CONFIGURED
V
V
AS SLAVE)
REGISTER
OH
OL
P OR DSP
D1
SHIFT
13
OR
D0
14
15
ZEROS
FILL
16
t
D13
4
(SAMPLE N + 1)
SAMPLE
t
5
Hi-Z
LTC1417
t
8
D13
1
DATA N
HOLD
D12
19
2
D11
1417 F17
3