Datasheet

MAX11359A
16-Bit Data-Acquisition System with ADC, DAC,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
3
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
Normal-Mode 60Hz Rejection
Ratio
PGA gain = 1, unipolar mode, data rate =
50sps (Note 2)
100 dB
Normal-Mode 50Hz Rejection
Ratio
Data rate = 10sps or 50sps, PGA gain = 1,
unipolar mode (Note 2)
100 dB
Absolute Input Range
Inter nal tem p er atur e sensor d i sab l ed
( Fi g ur e 26)
V
AGND
V
AVDD
V
Unipolar mode
-0.05/
Gain
V
REF
/
Gain
Differential Input Range
Bipolar mode
-V
REF
/
Gain
V
REF
/
Gain
V
ADC not in measurement mode, mux
enabled, T
A
≤ +55°C, inputs = +0.1V to
(V
AVDD
- 0.1V)
±1
DC Input Current (Note 7)
T
A
= +85°C ±5
nA
Input Sampling Capacitance C
IN
5pF
Input Sampling Rate f
SAMPLE
21.84 kHz
E xter nal S our ce Im ped ance at Inp ut (Table 3) Table 3 kΩ
FORCE-SENSE DAC (R
L
= 10kΩ and C
L
= 200pF, FBA = OUTA, unless otherwise noted)
Resolution Guaranteed monotonic 10 Bits
Differential Nonlinearity DNL Code 3Dhex to 3FF hex ±1 LSB
Integral Nonlinearity INL Code 3Dhex to 3FF hex ±4 LSB
Offset Error Reference to code 52 hex ±20 mV
Offset-Error Tempco ±4.4 µV/°C
Gain Error Excludes offset and voltage reference error ±5 LSB
Gain-Error Tempco Excludes offset and reference drift ±1 ppm/°C
Input Leakage Current at SWA/B SWA switches open (Notes 7, 8) ±1nA
T
A
= -40°C to +85°C ±1nA
T
A
= 0°C to +70°C ±600Input Leakage Current at FBA/B
V
FBA
= +0.3V to
(V
AVDD
- 0.3V)
(Note 7)
T
A
= 0°C to +50°C ±400
pA
DAC Output Buffer Leakage
Current
DAC buffer disabled (Note 7) ±75 nA
Input Common-Mode Voltage At FBA 0
V
AVDD
- 0.35
V
Line Regulation V
AVDD
= +1.8V to +3.6V, T
A
= +25°C 40 175 µV/V
Load Regulation I
OUT
= ±2mA, C
L
= 1000pF (Note 2) 0.5 µV/µA
Output Voltage Range V
AGND
V
AVDD
V