Datasheet

(V
DD
= +4.75V to +5.25V (MAX1098), V
DD
= +2.7V to +3.6V (MAX1099), external reference, V
REF
= +2.5V (MAX1098), V
REF
= +1.2V
(MAX1099), f
SCLK
= 2.5MHz, 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
DIGITAL INPUTS
Input Voltage Low
V
IL
0.8 V
Input Voltage High
V
IH
V
DD
- 0.8 V
Input Hysteresis
V
HYST
0.2 V
Input Leakage Current
I
IN
1 µA
Input Capacitance 16 pF
DIGITAL OUTPUTS
Output Low Voltage
V
OL
I
SINK
= 5mA
0.6 V
Output High Voltage V
OH
I
SOURCE
= 0.5mA V
DD
- 0.6 V
Three-State Output Leakage
Current
I
OUT
±10 µA
Three-State Output Capacitance 15 pF
POWER REQUIREMENTS
Positive Supply Voltage V
DD
MAX1098 4.75 5.25
V
MAX1099 2.7 3.6
Positive Supply Current
(Note 6)
I
DD
Full-on, voltage measurements,
internal reference
MAX1098 390
µA
MAX1099 350
Full-on, voltage measurements,
external reference
MAX1098 310
MAX1099 280
Full-on, temperature
measurements, internal
reference
MAX1098 440 500
MAX1099 400 500
Full-on, temperature
measurements, external
reference
MAX1098 360
MAX1099 330
Standby, SCLK = GND 120
Standby-plus, SCLK = GND 190
Shutdown, SCLK = GND 2 10
Power-Supply Rejection PSRR (Note 7) 50 65 dB
INTERNAL VOLTAGE REFERENCE CHARACTERISTICS
Reference Voltage
V
REF
V
DD
= 5V MAX1098 2.494 2.50 2.506
V
V
DD
= 3V MAX1099 1.197 1.20 1.203
Reference Tempco TC V
REF
±20 ppm/°C
Output Short-Circuit Current 1.25 mA
Capacitive Bypass at REF 0.1 µF
REF Output Noise f
N
= 10Hz to 10kHz
MAX1098 130
µV
RMS
MAX1099 65
REF Line Regulation
MAX1098 +3.0
mV/V
MAX1099 +0.2
REF Load Regulation
0 to 100µA output current
(Note 8)
MAX1098 4 10
µV/µA
MAX1099 2 10
MAX1098/MAX1099 10-Bit Serial-Output Temperature Sensors
with 5-Channel ADC
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)