1
2
3
4
5
6
14
15
16
CS
SCLK
SDO
SDI
DO-
15
DO-14
DO-13
DO-12
DO-11
MSB
DO-10
MSB-1
DO-0
LSB
DO-1
LSB+1
DO-2
LSB+2
DI-15
DI-14
DI-12
DI-11
DI-10
DI-2
DI-1
DI-0
a
t
d3
t
su1
t
d1
t
h1
t
su2
t
d2
t
h2
DI-13
1/t Throughput (Single Frame)
t
q
t
w1
1
3
5
7
9
11
13
15 16
3
5
7
9
11
13
15 16
1
12-Bit Conversion Result
16-Bit I/P Word
16-Bit I/P Word
12-Bit Conversion Result
Sampling
Instance
Mux Chan Change
Mux Chan Change
CS
SCLK
SDO
SDI
MUX
Acquisition
Conversion
GPO
GPI
Data Written (through SDI) in Frame n
Data Written (through SDI) in Frame n – 1
GPI status is latched in on CS falling
edge and transferred to SDO frame n
Top 4 Bit
Top 4 Bit
Frame n + 1
Frame n
Analog I/P Settling After Chan Change
Acquisition Phase t
acq
Conversion Phase
Conversion Phase t
cnv
18
ADS7950, ADS7951, ADS7952, ADS7953, ADS7954, ADS7955
ADS7956, ADS7957, ADS7958, ADS7959, ADS7960, ADS7961
SLAS605C – JUNE 2008 – REVISED JULY 2018
Product Folder Links:
ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958
Copyright © 2008–2018, Texas Instruments Incorporated
Figure 1. Device Operation Timing Diagram
Figure 2. Serial Interface Timing Diagram for 12-Bit Devices (ADS7950/51/52/53)
