TC811 查看數據表（PDF） - TelCom Semiconductor Inc => Microchip
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TC811
TelCom Semiconductor Inc => Microchip
TC811 Datasheet PDF : 12 Pages
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3-1/2 DIGIT A/D CONVERTER WITH HOLD AND
DIFFERENTIAL REFERENCE INPUTS
1
TC811
ELECTRICAL CHARACTERISTICS: VSupply = 9V, fCLOCK = 32.768kHz, and TA = 25°C, unless otherwise noted.
Symbol
Parameter
Test Conditions
Min
Typ
Max Unit
2
TCSF
Scale Factor Temperature
Coefficient
VIN = 199mV, 0°C ≤ TA ≤ 70°C
(ext. VREF tc = 0ppm)
—
1
5
ppm/°C
Analog Common Section
VCTC
VC
Analog Common
Temperature Coefficient
Analog Common Voltage
250KΩ from V+ to Analog Common
—
—
0°C ≤ TA ≤ 70°C
—
—
"C" Commercial
—
35
"I" Industrial
—
35
250kΩ from V+ to Analog Common
2.7
3.05
—
—
—
—
75 ppm/°C
100
3.35
ppm/°C
Volts
3
Hold Pin Input Section
Input Resistance
Pin 1 to Pin 37
—
70
—
kΩ
VIL
Input Low Voltage
VIH
Input High Voltage
Pin 1
Pin 1
—
—
Test +1.5 V
V+ – 1.5
—
—
V
LCD Drive Section3
VSD
LCD Segment Drive Voltage V+ to V– = 9V
VSD
LCD Backplane Drive Voltage V+ to V– = 9V
4
5
4
5
6
6
VP-P
VP-P
4
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.
5
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
32
ANALOG
COMMON
31
V
+
IN
10's
B2 11
TC811CPL
(40-PIN PDIP)
30
V
–
IN
A2 12
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
6
7
8
TELCOM SEMICONDUCTOR, INC.
3-139
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