Datasheet

MAX11359A
16-Bit Data-Acquisition System with ADC, DAC,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
10
Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= V
DVDD
= +1.8V to +3.6V, V
REF
= +1.25V, external reference, CLK32K = 32.768kHz (external clock), C
REG
= 10µF, C
CPOUT
=
10µF, 10µF between CF+ and CF-, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
AVDD
= V
DVDD
=
3.6V
1.36 2.0
I
MAX
E ver ythi ng on,
char g e p um p
unl oad ed , no d i g i tal
p i ns, si nki ng /sour ci ng
cur r ent, e.g ., RS T ,
U P IO, and C LK32K,
m ax i nter nal tem p -
sensor cur r ent, cl ock
outp ut b uffer s
unl oad ed , AD C at
512sp s
V
AVDD
= V
DVDD
=
3.3V
1.15 1.7
Total Supply Current
I
NORMAL
All on except charge pump and temp
sensor, ADC at 512sps, CLK output buffer
enabled, clock output buffers unloaded
1.17 1.3
mA
V
AVDD
= V
DVDD
=
3.0V
6.5
T
A
= -45°C to +85°C
V
AVDD
= V
DVDD
=
9
V
AVDD
= V
DVDD
=
3.0V
4.42
Sleep-Mode Supply Current I
SLEEP
T
A
= +25°C
V
AVDD
= V
DVDD
=
3.6V
5.56
µA
T
A
= -40°C to +85°C 4
Shutdown Supply Current I
SHDN
All off
T
A
= +25°C 1.6
µA
Note 1: Devices are production tested at T
A
= +25°C and T
A
= +85°C. Specifications to T
A
= -40°C are guaranteed by design.
Note 2: Guaranteed by design or characterization.
Note 3: The offset and gain errors are corrected by self-calibration or system calibration. For accurate calibrations, perform cali-
bration at the lowest rate. The calibration error is therefore in the order of peak-to-peak noise for the selected rate.
Note 4: Eliminate drift errors by recalibration at the new temperature.
Note 5: The gain error excludes reference error, offset error (unipolar), and zero error (bipolar).
Note 6: Gain-error drift does not include unipolar offset drift or bipolar zero-error drift. It is effectively the drift of the part if zero-
scale error is removed.
Note 7: These specifications are obtained from characterization during design or from initial product evaluation. Not production
tested or guaranteed.
Note 8: V
OUTA
= +0.5V or +1.5V, V
SWA
= +1.5V or +0.5V, T
A
= 0°C to +50°C.
Note 9: Long-term stability is characterized using five to six parts. The bandgaps are turned on for 1000hrs at room temperature
with the parts running continuously. Daily measurements are taken and any obvious outlying data points are discarded.
Note 10: All of the stated temperature accuracies assume that 1) the external diode characteristic is precisely known (i.e., ideal)
and 2) the ADC reference voltage is exactly equal to 1.25V. Any variations to this known reference characteristic and volt-
age caused by temperature, loading, or power supply results in errors in the temperature measurement. The actual tem-
perature calculation is performed externally by the microcontroller (µC).
Note 11: Values based on simulation results and are not production tested or guaranteed.