Rainbow Electronics MAX1205 - Manual (Page 4)

MAX1205
+5V Single-Supply, 1Msps, 14-Bit
Self-Calibrating ADC
4 _______________________________________________________________________________________
C L = 20pF
CONDITIONS
ns 187 244 301 t CH Clock High Time
ns 488 t CLK
ns 4 / f SAMPLE t CONV Conversion Time
Clock Period
ns 16 75 t
REL
Bus Relinquish Time
ns 16 75 t AC Data Access Time
ns 187 244 301 t CL Clock Low Time
ns 70 150 t OD Output Delay
ns 1 / f CLK t DAV DAV Pulse Width
ns 65 145 t S CLK-to-DAV Rising Edge
UNITS MIN TYP MAX SYMBOL PARAMETER
DIGITAL INPUTS AND OUTPUTS
(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.)
I SOURCE = 200µA
V IN_ = 0 or DV DD
CONDITIONS
4 Input Capacitance
DV DD
- 0.8
V IH
0.8 V IL Input Low Voltage
Input High Voltage
DV
DD
DV
DD
- 0.4 - 0.03
V OH Output High Voltage
0.8 CLK VIL CLK Input Low Voltage
AV DD
- 0.8
CLK VIH CLK Input High Voltage
9 C CLK CLK Input Capacitance
±0.1 ±10 I IN_ Digital Input Current
MIN TYP MAX SYMBOL PARAMETER
-10 ±1 +10 I CLK Clock Input Current
±0.1 ±10 I LEAKAGE Three-State Leakage Current
3.5 C
OUT
Three-State Output Capacitance
µA
µA
pF
pF
V
V
V
V
V
pF
µA
UNITS
TIMING CHARACTERISTICS
(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)
ns t CLK / 2 t ACQ Acquisition Time
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 0V and V REF , V INN = V REF / 2; where V REF = V RFPS - V RFNS .
For differential mode, the analog inputs INP and INN must be within 0V and V REF ; where V REF = V RFPS - V RFNS . The com-
mon mode of the inputs INP and INN is V REF / 2.
Note 3: Minimum and maximum parameters are not tested. Guaranteed by design.
Note 4: R I varies inversely with sample rate.
Note 5: Calibration remains valid for temperature changes within ±20°C and power-supply variations ±5%.
Note 6: All AC specifications are shown for the differential mode.
ST_CAL = 1, Figure 8
f CLK
cycles
17,400 t CAL Calibration Time
I
SINK
= 1.6mA 70 400 V
OL
Output Low Voltage mV