User Manual
MAX1200
+5V Single-Supply, 1Msps, 16-Bit
Self-Calibrating ADC
4 _______________________________________________________________________________________
DIGITAL INPUT AND OUTPUT CHARACTERISTICS
(AV
DD
= +5V ±5%, DV
DD
= DRV
DD
= +3.3V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
Note 1: Reference inputs driven by operational amplifiers for Kelvin-sensed operation.
Note 2: For unipolar mode, the analog input voltage, V
INP
, must be within 0 and V
REF
, V
INN
= V
CM
/ 2; where V
REF
= V
RFPS
- V
RFNS
.
For differential mode, the analog input voltages V
INP
and V
INN
must be within 0 and V
REF
; where V
REF
= V
RFPS
- V
RFNS
. The
common-mode voltage of the inputs INP and INN is V
CM
=
(V
RFPS
+
V
RFNS
) / 2.
Note 3: R
I
varies inversely with sample rate.
Note 4: Minimum and maximum parameters are not tested. Guaranteed by design.
Note 5: Calibration remains valid for temperature changes within ±20°C and power-supply variations ±5%. Guaranteed by design.
Note 6: All AC specifications are shown for the differential mode.
I
SOURCE
= 200µA
V
IN
= 0 or DV
DD
CONDITIONS
4Input Capacitance
DV
DD
- 0.8V
IH
0.8V
IL
Input LOW Voltage
Input HIGH Voltage
DV
DD
DV
DD
- 0.4 - 0.03
V
OH
Output High Voltage
0.8V
CLK
CLK Input LOW Voltage
AV
DD
- 0.8V
CLK
CLK Input HIGH Voltage
9C
CLK
CLK Input Capacitance
±0.1 ±10I
IN
Digital Input Current
MIN TYP MAX
SYMBOLPARAMETER
I
SINK
= 1.6mA 70 400V
OL
Output Low Voltage
±0.1 ±10I
LEAKAGE
Three-State Leakage Current
3.5C
OUT
Three-State Output Capacitance
mV
µA
pF
pF
V
V
V
V
V
pF
µA
UNITS
V
IN
= 0 or V
DD
±1 ±10I
CLK
CLK Input Current µA
C
L
= 20pF
CONDITIONS
ns187 244 301t
CH
Clock HIGH Time
ns488t
CLK
ns4 / f
SAMPLE
t
CONV
Conversion Time
Clock Period
ns16 75t
REL
Bus Relinquish Time
ns16 75t
AC
Data Access Time
ns187 244 301t
CL
Clock LOW Time
ns70 150t
OD
Output Delay
ns1 / f
CLK
t
DAV
DAV Pulse Width
ns65 145t
S
CLK-to-DAV Rising Edge
UNITSMIN TYP MAXSYMBOLPARAMETER
ST_CAL = DV
DD
f
CLK
Cycles
17,400t
CAL
Calibration Time
nst
CLK
/ 2t
ACQ
Acquisition Time
TIMING CHARACTERISTICS (Figures 7, 8, 9)
(AV
DD
= +5V ±5%, DV
DD
= DRV
DD
= +3.3V, f
CLK
= 2.048MHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)