TC811 查看數據表（PDF） - Microchip Technology
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TC811
Microchip Technology
TC811 Datasheet PDF : 14 Pages
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3-1/2 Digit Analog-To-Digital Converter with
Hold and Differential Reference Inputs
TC811
ELECTRICAL CHARACTERISTICS: VSupply = 9V, fCLOCK = 32.768kHz, and TA = 25°C, unless otherwise noted.
Symbol
Parameter
Test Conditions
Min
Typ
Max Unit
TCSF
Scale Factor Temperature
Coefficient
VIN = 199mV, 0°C ≤ TA ≤ 70°C
(ext. VREF tc = 0ppm)
—
1
5
ppm/°C
Analog Common Section
VCTC
Analog Common
250KΩ from V+ to Analog Common
—
—
—
—
Temperature Coefficient
0°C ≤ TA ≤ 70°C
—
—
—
—
"C" Commercial
—
35
75 ppm/°C
"I" Industrial
—
35
100 ppm/°C
VC
Analog Common Voltage
250kΩ from V+ to Analog Common
2.7
3.05
3.35
Volts
Hold Pin Input Section
Input Resistance
Pin 1 to Pin 37
—
70
—
kΩ
VIL
Input Low Voltage
VIH
Input High Voltage
LCD Drive Section3
Pin 1
Pin 1
—
—
Test +1.5 V
V+ – 1.5
—
—
V
VSD
LCD Segment Drive Voltage V+ to V– = 9V
VSD
LCD Backplane Drive Voltage V+ to V– = 9V
4
5
4
5
6
VP-P
6
VP-P
Power Supply
ISUP
Power Supply Current
VIN = 0V, V+ to V– = 9V
—
—
—
—
fOSC = 16kHz
—
70
100
µA
fOSC = 48kHz
—
90
125
µA
NOTES: 1. Input voltages may exceed supply voltages when input current is limited to 100µA.
2. Dissipation rating assumes device is mounted with all leads soldered to a printed circuit board.
3. Backplane drive is in phase with the segment drive for "segment off" 180° out of phase for "segment on." Frequency is 20 times the
conversion rate. Average DC component is less than 50mV.
PIN CONFIGURATIONS
HLDR
D1
C1
1 NORMAL PIN 40 OSC1
2 CONFIGURATION 39 OSC2
3
38 V+
B1 4
37 TEST
1's
A1 5
36 VREF+
F1 6
35 CREF+
G1 7
34 CREF–
E1 8
33 VREF–
D2 9
C2 10
TC811CPL
(40-PIN PDIP)
32
ANALOG
COMMON
31 VIN+
10's
B2 11
A2 12
30
V
–
IN
29 CAZ
F2 13
28 VBUFF
E2 14
D3 15
27 VINT
26 V –
100's
B3 16
F3 17
25 G2
10's
24 C3
E3 18
23 A3 100's
1000's
AB4 19
22 G3
POL 20
(MINUS SIGN)
21 BP
(BACKPLANE)
NC = NO INTERNAL CONNECTION
44 43 42 41 40 39 38 37 36 35 34
NC 1
NC 2
TEST 3
V+ 4
NC 5
OSC2 6
OSC1 7
HLDR 8
D1 9
C1 10
B1 11
TC811CKW
(PQFP)
33 NC
32 G2
31 C3
30 A3
29 G3
28 BP
27 POL
26 AB4
25 E3
24 F3
23 B3
12 13 14 15 16 17 18 19 20 21 22
© 2001 Microchip Technology Inc. DS21472A
3
TC811-7 11/5/96
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