Owner's manual

MAX1365/MAX1367
Stand-Alone, 4.5-/3.5-Digit Panel Meters
with 4–20mA Output
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= DAC_VDD = +2.7V to +5.25V, GND = 0, V
LEDV
= +2.7V to +5.25V, LEDG = 0, V
REF+
- V
REF-
= 2.048V (external
reference), 4-20OUT = 7V, V
REG_AMP
= +5.0V, C
REF+
= 0.1µF, REF- = GND, C
NEGV
= 0.1µF. Internal clock mode, unless otherwise
noted. All specifications are at T
A
= T
MIN
to T
MAX
. Typical values are at T
A
= +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
ADC POWER SUPPLY (Note 7)
AV
DD
Voltage AV
DD
2.70 5.25
V
DV
DD
Voltage DV
DD
2.70 5.25
V
Power-Supply Rejection AV
DD
PSR
A
(Note 8) 80 dB
Power-Supply Rejection DV
DD
PSR
D
(Note 8) 100 dB
640
AV
DD
Current (Note 9) I
AVDD
Standby mode
305
µA
DV
DD
= +5.25V
320
DV
DD
= +3.3V
180
DV
DD
Current (Note 9) I
DVDD
Standby mode 20
µA
DAC POWER SUPPLY
DAC Supply Voltage
V
DAC_VDD
2.70 5.25
V
DAC Supply Current
0.10 0.21
mA
LINEAR REGULATOR AND V/I CONVERTER POWER REQUIREMENTS
REG_AMP Supply Voltage
V
REG_AMP
4.75 5.25
V
REG_AMP Supply Current
0.19 0.30
mA
REG_VDD Supply Voltage
V
REG_VDD
5.20
V
REG_VDD Supply Current Includes 20mA programmed current
25.2 27.4
mA
LED DRIVERS
LED Supply Voltage V
LEDV
2.70 5.25
V
LED Shutdown Supply Current I
SHDN
10 µA
LED Supply Current I
LEDV
176
180
mA
MAX1365 512
Display Scan Rate f
OSC
MAX1367 640
Hz
Segment Current Slew Rate I
SEG
/∆t25
mA/µs
DIG_ Voltage Low V
DIG
0.178 0.300
V
Segment-Drive Source-Current
Matching
∆I
SEG
3
±12
%
Segment-Drive Source Current I
SEG
V
LEDV
- V
SEG
= 0.6V, R
SET
= 25kΩ
15.0 21.5 25.5
mA
LED Drivers Bias Current From AV
DD
120 µA
Interdigit Blanking Time 4µs