MAXQ7670
Microcontroller with 10-Bit ADC,
PGA, 64KB Flash, and CAN Interface
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
DVDDIO
= +5.0V, V
AVDD
= +3.3V, V
DVDD
= +2.5V, V
REFADC
= +3.3V, system clock = 16MHz. 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
PGA gain = 16V/V,
26.5 ADCCLK cycles at 4MHz
6.625
Channel Select Plus
Conversion Time
t
ACQ
+
t
CONV
PGA gain = 1V/V,
16 ADCCLK cycles at 4MHz
4
µs
Turn-On Time t
RECOV
10 µs
Aperture Delay 60 ns
Aperture Jitter 100 ps
P-P
At AIN0–AIN7, unipolar mode,
PGA gain = 1V/V
0V
REFADC
At AIN0–AIN7, unipolar mode,
PGA gain = 16V/V
0 0.125
At AIN0–AIN7, bipolar mode,
PGA gain = 1V/V
-V
REFADC
/2
+V
REFADC
/2
Differential Input Voltage
Range
At AIN0–AIN7, bipolar mode,
PGA gain = 16V/V
-V
REFADC
/32
+V
REFADC
/32
V
Absolute Input Voltage Range At AIN0–AIN7 0 V
AVDD
V
Input Leakage Current At AIN0–AIN7 ±0.1 µA
At AIN0–AIN7, PGA gain = 16V/V 50
Input-Referred Noise
At AIN0–AIN7, PGA gain = 1V/V 400
µV
RMS
V
IN
= 12mV
P-P
, PGA gain = 16V/V 33
Small-Signal Bandwidth (-3dB)
V
IN
= 200mV
P-P
, PGA gain = 1V/V 23
MHz
V
IN
= 150mV
P-P
, PGA gain =16V/V 33
Large-Signal Bandwidth (-3dB)
V
IN
= 2.5V
P-P
, PGA gain = 1V/V 19
MHz
Single-ended, any AIN0–AIN7,
PGA gain = 16V/V
16
Input Capacitance (Note 8)
Single-ended, any AIN0–AIN7,
PGA gain = 1V/V
13
pF
Input Common-Mode Rejection
Ratio
CMRR
AIN0–AIN7,
V
CM
= differential input range
75 dB
Power-Supply Rejection Ratio PSRR AV
DD
= 3.0V to 3.6V 90 dB
EXTERNAL REFERENCE INPUTS
REFADC Input Voltage Range 1.0 3.3 V
AVDD
V
REFADC Leakage Current ADC disabled 1 µA
Input Capacitance (Note 9) 20 pF
+3.3V (AVDD) LINEAR REGULATOR
AVDD Output Voltage LRAPD = 0 3.15 3.3 3.45 V
No-Load Quiescent Current
LRAPD = 0, all internal analog
peripherals disabled
10 µA
