Electrical characteristics (continued), Timing characteristics – Rainbow Electronics MAX194 User Manual
Page 4
MAX194
14-Bit, 85ksps ADC with 10µA Shutdown
4
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VDDD = VDDA = 5.25V, VSSD = VSSA = -5.25V
VDDD = VDDA = 5.25V, VSSD = VSSA = -5.25V,
BP/UP/SHDN = 0V
VDDD = VDDA = 5.25V, VSSD = VSSA = -5.25V,
BP/UP/SHDN = 0V
VDDD = VDDA = 5.25V, VSSD = VSSA = -5.25V,
BP/UP/SHDN = 0V
VDDD = VDDA = 5.25V, VSSD = VSSA = -5.25V,
BP/UP/SHDN = 0V
CONDITIONS
mW
80
Power Dissipation
µA
0.1
5
I
SSA
VSSA Shutdown Supply Current
µA
0.1
5
I
DDA
VDDA Shutdown Supply Current
µA
1.6
5
I
DDD
VDDD Shutdown Supply Current
(Note 5)
µA
0.1
5
I
SSD
VSSD Shutdown Supply Current
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
ELECTRICAL CHARACTERISTICS (continued)
(VDDD = VDDA = +5V, VSSD = VSSA = -5V, f
CLK
= 1.7MHz, V
REF
= +5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.)
TIMING CHARACTERISTICS
(VDDD = VDDA = +5V, VSSD = VSSA = -5V, unless otherwise noted.)
Note 1:
Accuracy and dynamic performance tests performed after calibration.
Note 2:
Tested with 50% duty cycle. Duty cycles from 25% to 75% at 1.7MHz are acceptable.
Note 3:
See
External Clock
section.
Note 4:
Guaranteed by design, not tested.
Note 5:
Measured in shutdown mode with CLK and SCLK low.
POWER REQUIREMENTS (cont.)
PARAMETER
SYMBOL CONDITIONS
T
A
= +25°C
TYP
T
A
= 0°C to
+70°C
MIN
MAX
T
A
= -40°C to
+85°C
MIN
MAX
T
A
= -55°C to
+125°C
MIN
MAX
UNITS
CONV Pulse Width
t
CW
20
30
35
ns
CONV to CLK Falling
Synchronization (Note 4)
t
CC1
10
10
10
ns
CONV to CLK Rising
Synchronization (Note 4)
t
CC2
40
40
ns
Data Access Time
t
DV
C
L
= 50pF
80
80
40
ns
Bus Relinquish Time
t
DH
C
L
= 10pF
40
40
40
ns
CLK to EOC High
t
CEH
C
L
= 50pF
300
300
350
ns
CLK to EOC Low
t
CEL
C
L
= 50pF
300
300
350
ns
CLK to DOUT Valid
t
CD
C
L
= 50pF
100
350
100
375
100
400
ns
SCLK to DOUT Valid
t
SD
C
L
= 50pF
20
140
20
160
20
160
ns
CS to SCLK Setup Time
t
CSS
75
75
75
ns
CS to SCLK Hold Time
t
CSH
-10
-10
-10
ns
Acquisition Time
t
AQ
2.4
2.4
2.4
µs
Calibration Time
t
CAL
14,000(
CLK
)
8.2
8.2
8.2
ms
RESET to CLK Setup Time
t
RCS
-40
-40
-40
ns
RESET to CLK Hold Time
t
RCH
120
120
120
Start-Up Time (Note 6)
t
SU
Exiting
shutdown
3.2
ns
90
µs
Note 6:
Settling time required after deasserting shutdown to achieve less than 0.1LSB additional error.