Datasheet
SLAS361D − JANUARY 2002 − REVISED AUGUST 2004
28
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
10-bit ADC, temperature sensor and built-in V
MID
PARAMETER
TEST CONDITIONS V
CC
MIN NOM MAX UNIT
Operating supply current into REFON = 0, INCH = 0Ah,
2.2 V 40 120
I
SENSOR
Operating supply current into
V
CC
terminal (see Note 1)
REFON = 0, INCH = 0Ah,
ADC10ON=NA, T
A
= 25_C
3 V 60 160
µA
ADC10ON = 1, INCH = 0Ah,
2.2 V 986 986±5%
V
SENSOR
†
ADC10ON = 1, INCH = 0Ah,
T
A
= 0°C
3 V 986 986±5%
mV
2.2 V 3.55 3.55±3%
°
TC
SENSOR
†
ADC10ON = 1, INCH = 0Ah
3 V 3.55 3.55±3%
mV/°C
Sample time required if channel ADC10ON = 1, INCH = 0Ah,
2.2 V 30
t
SENSOR(sample)
†
Sample time required if channel
10 is selected (see Note 2)
ADC10ON = 1, INCH = 0Ah,
Error of conversion result ≤ 1 LSB
3 V 30
µs
Current into divider at channel 11
2.2 V NA
I
VMID
Current into divider at channel 11
(see Note 3)
ADC10ON = 1, INCH = 0Bh,
3 V NA
µA
ADC10ON = 1, INCH = 0Bh,
2.2 V 1.1 1.1±0.04
V
MID
V
CC
divider at channel 11
ADC10ON = 1, INCH = 0Bh,
V
MID
is ~0.5 x V
CC
3 V 1.5 1.50±0.04
V
Sample time required if channel ADC10ON = 1, INCH = 0Bh,
2.2 V 1400
t
VMID(sample)
Sample time required if channel
11 is selected (see Note 4)
ADC10ON = 1, INCH = 0Bh,
Error of conversion result ≤ 1 LSB
3 V 1220
ns
†
Not production tested, limits characterized
NOTES: 1. The sensor current I
SENSOR
is consumed if (ADC10ON = 1 and REFON = 1), or (ADC10ON=1 and INCH=0Ah and sample signal
is high). When REFON = 1, ISENSOR is included in IREF+. When REFON = 0, ISENSOR applies during conversion of the
temperature sensor input (INCH = 0Ah).
2. The typical equivalent impedance of the sensor is 51 kΩ. The sample time required includes the sensor-on time t
SENSOR(on)
.
3. No additional current is needed. The V
MID
is used during sampling.
4. The on-time t
VMID(on)
is included in the sampling time t
VMID(sample)
; no additional on time is needed.