Datasheet
1996 Microchip Technology Inc.
Preliminary
DS40122B-page 124
PIC14000
Temperature Sensor (continued)
Output Linearity lin(temp) — TBD — 1
Operating Current (sensor on) idd(temp) — 150 250
µ
A TEMPOFF = 0 2
Operating Current (sensor off) idd(temp) — 0 —
µ
A TEMPOFF = 1 2
Slope Reference Voltage Divider
Output Voltage (SREFHI) voh(sref) 1.14 1.19 1.24 V
Output Voltage (SREFLO) vol(sref) 0.10 0.13 0.16 V
Slope Reference Calibration
Factor
K
REF
0.09 0.126 0.16 TA = 25
°
C, VDD = 5V
K
REF
Supply Sensitivity ss(K
REF
) — 0.02 — %/V From VDDmin to VDDmax 1
K
REF
Temperature Coefficient tc(K
REF
) — 20 — ppm/
°
C From Tmin to Tmax 1
Operating Current (A/D on) idd(sref) — 55 85
µ
A ADOFF = 0 2
Operating Current (A/D off) idd(sref) — 0 —
µ
A ADOFF = 1 2
A/D Comparator
Input Offset Voltage ioff(adc) -10 2 10 mV Measured over common-mode
range
Input Common Mode Voltage
Range
cmr(adc) 0 — VDD-1.4 V
Differential Voltage Gain gain(adc) — 100 — dB 1
Common Mode Rejection Ratio cmrr(adc) — 80 — dB VDD = 5V, TA = 25
°
C, over
common-mode range
1
Power Supply Rejection Ratio psrr(adc) — 70 — dB TA = 25
°
C, VDDmin to VDDmax 1
Operating Current (A/D on) idd(adc) — 40 65
µ
A ADOFF = 0 2
Operating Current (A/D off) — 0 —
µ
A ADOFF = 1 2
Programmable Reference(s)
Upper Range
Output Voltage
Coarse Resolution
Fine Resolution
vo(pref)
resc(pref)
resf(pref)
0.627
0.418
38.0
4.0
0.792
0.528
48.0
5.0
0.957
0.638
58.0
6.0
V
V
mV
mV
TA = 25
°
C
PREFx<7:0> = 7Fh
(127 decimal), max
PREFx<7:0> = 50h
(80 decimal), min
PREFx<2:0> = constant
PREFx<7:3> = constant
Middle Range
Output Voltage
Coarse Resolution
Fine Resolution
vo(pref)
resc(pref)
resf(pref)
0.414
0.380
0.342
3.8
0.38
0.523
0.480
0.432
4.8
0.46
0.632
0.580
0.522
5.8
0.54
V
V
V
mV
mV
TA = 25
°
C
PREFx<7:0> = 4F
(79 decimal), max
PREFx<7:0> = 00h
(default), mid-point
PREFx<7:0> = C8h
(200 decimal), min
PREFx<2:0> = constant
PREFx<7:3> = constant 1
Standard Operating Conditions (unless otherwise stated)
Operating Temperature: -40
°
C
≤
TA
≤
+85
°
C for industrial
0
°
C
≤
TA
≤
+70
°
C for commercial
V
DD
range: 2.7V (min) to 6.0V (max) unless otherwise stated.
Characteristic Sym. Min. Typ. Max. Units Conditions Notes