Datasheet

(V
DD
= 1.8V, V
LED+
= 5.0V, T
A
= +25°C, min/max are from T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
=
25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
PULSE OXIMETRY/HEART-RATE SENSOR CHARACTERISTICS
ADC Resolution 18 bits
Red ADC Count
(Note 2)
REDC
LED1_PA = 0x0C, LED_PW = 0x01,
SPO2_SR = 0x05,
ADC_RGE = 0x00
65536 Counts
IR ADC Count
(Note 2)
IRC
LED2_PA = 0x0C, LED_PW = 0x01,
SPO2_SR = 0x05
ADC_RGE = 0x00
65536 Counts
Green ADC Count
(Note 2)
GRNC
LED3_PA = LED4_PA = 0x24, LED_PW
= 0x01,
SPO2_SR = 0x05,
ADC_RGE = 0x00
65536 Counts
Dark Current Count LED_DCC
LED1_PA = LED2_PA = 0x00,
LED_PW = 0x03, SPO2_SR = 0x01
ADC_RGE = 0x02
30 128 Counts
0.01 0.05 % of FS
DC Ambient Light Rejection
(Note 3)
ALR
ADC counts with nger on sensor
under direct sunlight (100K lux),
ADC_RGE = 0x3, LED_PW =
0x03, SPO2_SR = 0x01
Red LED 2 Counts
IR LED 2 Counts
ADC Count—PSRR (V
DD
) PSRRV
DD
1.7V < V
DD
< 2.0V,
LED_PW = 0x00, SPO2_SR = 0x05
0.25 1 % of FS
Frequency = DC to 100kHz, 100mV
P-P
10 LSB
ADC Count—PSRR
(LED Driver Outputs)
PSRR
LED
3.1V < V
LED+
< 5.0V,
LED1_PA = LED2_PA = 0x0C,
LED_PW = 0x01, SPO2_SR = 0x05
0.05 1 % of FS
4.5V < V
LED+
< 5.5V, T
A
= 25°C
LED3_PA = LED4_PA = 0x24,
LED_PW = 0x01, SPO2_SR = 0x05
Frequency = DC to 100kHz, 100mV
P-P
10 LSB
ADC Clock Frequency CLK 10.2 10.48 10.8 MHz
ADC Integration Time
(Note 3)
INT
LED_PW = 0x00 69
µs
LED_PW = 0x01 118
LED_PW = 0x02 215
LED_PW = 0x03 411
Slot Timing (Timing Between
Sequential Channel Samples;
e.g., Red Pulse Rising Edge To IR
Pulse Rising Edge)
INT
LED_PW = 0x00 427
µs
LED_PW = 0x01 525
LED_PW = 0x02 720
LED_PW = 0x03 1107
COVER GLASS CHARACTERISTICS (Note 3)
Hydrolytic Resistance Class Per DIN ISO 719 HGB 1
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Maxim Integrated │ 3
MAX30101 High-Sensitivity Pulse Oximeter and
Heart-Rate Sensor for Wearable Health
Electrical Characteristics (continued)