Electrical characteristics (continued) – Rainbow Electronics MAX1329 User Manual
Page 6
MAX1329/MAX1330
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
6
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(DV
DD
= 1.8V to 3.6V, AV
DD
= 2.7V to 5.5V, V
REFDAC
= V
REFADC
= 2.5V, external reference; 10µF capacitor at REFADC and REFDAC;
0.01µF capacitor at REFADJ; T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Temperature Resolution
V
REFADC
= 2.5V
1/8
°C/LSB
External-Diode Drive Ratio
I
DRIVEMIN
= 4µA, I
DRIVEMAX
= 68µA
17:1
Temperature-Sensor Supply
Current
Not including ADC current (Note 3)
100
µA
Temperature-Sensor Conversion
Time
307 clocks per measurement, master clock
= 5.00MHz
65
µs
CHARGE PUMP
Input Voltage
DV
DD
1.8
3.6
V
DV
DD
= 1.8V to 3.0V, VM2CP<2:0> = 001
2.85
3.0
3.20
DV
DD
= 2.2V to 3.6V, VM2CP<2:0> = 010
3.75
4.0
4.30
No-Load Output Voltage
AV
DD
DV
DD
= 2.7V to 3.6V, VM2CP<2:0> = 011
4.80
5.0
5.40
V
Output Current
Including internal current (Table 32)
25
mA
No-Load Supply Current
DV
DD
= 2.7V, AV
DD
= 4V, 39kHz clock
250
µA
Switching Frequency
39
78
kHz
Switch Turn-On/-Off Time
Between DV
DD
to AV
DD
,
charge pump off
40
ns
Switch Impedance
Shorts DV
DD
to AV
DD
, charge pump off
25
50
Ω
Efficiency
25mA load, DV
DD
= 1.8V, AV
DD
= 3.0V,
39kHz clock
80
%
DV
DD
VOLTAGE MONITOR (VM1)
Supply Voltage Range
1.0
3.6
V
VM1<1:0> = 0x,
RST1 input
1.80
1.865
1.93
Trip Threshold (DV
DD
Falling)
V
DTH
VM1<1:0> = x0,
RST2 input
2.65
2.750
2.90
V
VM1<1:0> = 0x,
RST1 input
15
Hysteresis
V
DHYS
VM1<1:0> = x0,
RST2 input
22.5
mV
Reset Timeout Period
V
DVDD
= V
DTH
+ V
DHYS
170
ms
Turn-On Time
DV
DD
= 1.8V, enabled by VM1 <1:0>
2
ms
AV
DD
VOLTAGE MONITOR (VM2)
Supply Voltage Range
1.0
5.5
V
VM2CP<1:0> = 01
2.53
2.775
2.975
VM2CP<1:0> = 10
3.4
3.700
3.925
Trip Threshold (AV
DD
Falling)
(Note 6)
V
ATH
VM2CP<1:0> = 11
4.25
4.625
4.925
V
VM2CP<1:0> = 01
22.5
VM2CP<1:0> = 10
30
Hysteresis
V
AHYS
VM2CP<1:0> = 11
37.5
mV