MAX11301 Datasheet, PDF (11/55 Pages) Maxim Integrated Products – Programmable Sample Averaging Per ADC Port

MAX11301
PIXI, 20-Port Programmable Mixed-Signal I/O with
12-Bit ADC, 12-Bit DAC, Analog Switches, and GPIO
Common PIXI Electrical Specifications
(V_AVDD = 4.75V to 5.25V, V_DVDD = 3.3V, V_AVDDIO = +12.0V, V_AGND = V_DGND = 0V, V_AVSSIO = -2.0V, V_DACREF = 2.5V, V_ADCREF = 2.5V
(Internal), f_S = 400ksps, 10V analog input range set to range 1 (0 to +10V). T_A = -40°C to +105°C, unless otherwise noted. Typical values
are at T_A = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
PIXI PORTS
Input Capacitance
All PIXI ports
20
pF
Input Resistance
All PIXI input pins except ADC mode
50
75
100
kΩ
Startup Time
Between stable supplies and accessing
registers
100
ms
HIGH-VOLTAGE OUTPUT DRIVER CHARACTERISTICS
Maximum Output Capacitance
250
pF
Output Low Voltage, DAC Mode
Output High Voltage, DAC Mode
Output Low Voltage, GPO Mode
Output High Voltage, GPO Mode
Current Limit
Sinking 25mA, V_AVSSIO = 0V,
V_AVDDIO = 10V
Sourcing 25mA, V_AVSSIO = 0V,
V_AVDDIO = 10V
Sinking 2mA, V_AVSSIO = 0V,
V_AVDDIO = 10V
Sourcing 2mA, V_AVSSIO = 0V,
V_AVDDIO = 10V
Short to AVDDIO
Short to AVSSIO
V_AVSSIO
+ 1.0
V
V_AVDDIO
- 1.5
V
V_AVSSIO
+ 0.4
V
V_AVDDIO
- 0.4
V
75
mA
75
mA
Note 2: Electrical specifications are production tested at T_A = +25°C. Specifications over the entire operating temperature range are
guaranteed by design and characterization. Typical specifications are at T_A = +25°C.
Note 3: DC accuracy specifications are tested for single-ended ADC inputs only.
Note 4: The effective ADC sample rate for port X configured in mode 6, 7, or 8 is:
[ADC sample rate per ADCCONV]/(([number of ports in modes 6,7,8] + [1 if TMPSEL ≠ 000]) x [2^# OF SAMPLES for port X])
Note 5: See the Recommended VDDIO/VSSIO Supply Selection table for each range. For ports in modes 6, 7, 8, or 9, the voltage
applied to those ports must be within the limits of their selected input range, whether in single-ended or differential mode.
Note 6: Specification is guaranteed by design and characterization.
Note 7: Switch controlled by GPI-configured port. One switch terminal connected to 0V, the other terminal connected to 5V through
a 5mA current source. Timing is measured at the 2.5V transition point. Turn-on and turn-off delays are measured from the
edge of the control signal to the 2.5V transition point. Turn-on and turn-off durations are measured between control signal
transitions.
Note 8: In DAC-related modes, the rate, at which PIXI ports configured in mode 1, 3, 4, 5, 6, or 10 are refreshed, is as follows:
1/(40µs x [number of ports in modes 1, 3, 4, 5, 6, 10])
Note 9: Typical (TYP) values represent the errors at the extremes of the given temperature range.
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