ꢀ ꢁ ꢂꢃ ꢄ ꢅ ꢆꢇ ꢄꢆꢈ ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆ ꢇ ꢃ ꢆꢈ ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆ ꢇ ꢃꢆ ꢇ
ꢀ ꢉ ꢊ ꢋꢌ ꢁꢉ ꢍꢎ ꢏ ꢐ ꢀꢉ ꢑ ꢒꢓꢑ ꢓꢎ ꢔꢒ ꢓꢐ ꢐꢋ ꢒ
SLAS272F − JULY 2000 − REVISED JUNE 2004
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
12-bit ADC, temperature sensor and built-in V
MID
PARAMETER
TEST CONDITIONS
MIN NOM
MAX
120
UNIT
2.2 V
3 V
40
60
Operating supply current into
AV terminal (see Note 1)
REFON = 0, INCH = 0Ah,
I
µA
SENSOR
ADC12ON=NA, T = 25_C
160
CC
A
2.2 V
3 V
986
986 5%
986 5%
3.55 3%
3.55 3%
ADC12ON = 1, INCH = 0Ah,
†
V
mV
mV/°C
µs
SENSOR
T
A
= 0°C
986
2.2 V
3 V
3.55
3.55
30
†
TC
ADC12ON = 1, INCH = 0Ah
SENSOR
2.2 V
3 V
Sample time required if channel
10 is selected (see Note 2)
ADC12ON = 1, INCH = 0Ah,
Error of conversion result ≤ 1 LSB
†
t
SENSOR(sample)
VMID
30
2.2 V
3 V
NA
NA
Current into divider at channel 11
(see Note 3)
I
ADC12ON = 1, INCH = 0Bh
ADC12ON = 1, INCH = 0Bh,
µA
2.2 V
3 V
1.1
1.1 0.04
V
MID
AV
CC
divider at channel 11
V
V
MID
is ~0.5 x V
AVCC
1.5 1.50 0.04
2.2 V
3 V
1400
1220
Sample time required if channel
11 is selected (see Note 4)
ADC12ON = 1, INCH = 0Bh,
Error of conversion result ≤ 1 LSB
t
ns
VMID(sample)
†
Not production tested, limits characterized
NOTES: 1. The sensor current I
is consumed if (ADC12ON = 1 and REFON=1), or (ADC12ON=1 AND INCH=0Ah and sample signal
SENSOR
is high). Therefore it includes the constant current through the sensor and the reference.
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
4. The on-time t
VMID(on)
is used during sampling.
MID
is included in the sampling time t ; no additional on time is needed.
VMID(sample)
38
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