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PDF ES5108 Data sheet ( Hoja de datos )
| Número de pieza | ES5108 | |
| Descripción | 31/2 Digit A/D Converter W/serial Output | |
| Fabricantes | Cyrustek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ES5108 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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¡¢
£
CYRUSTEK CO.
ES5108 3 1/2 Digit
ADC with serial output
Features
¤ Multi-function measurement system :
¥ Analog to digital converter.
¥ Short circuit beeper.
¥ Frequency counter.
¥ Differential inputs, 1pA bias current.
¥ Differential reference for ratiometric ohms.
¥ On-chip voltage reference, ¦¨§©¨© C
drift.
¥ Low linearity error.
¤ Frequency counter, auto range from 2KHz to
20MHz
¤ Low battery detector.
¤ Display hold and Max/Min.
m¤ Triplex LCD display.
o¥ Full 3 1/2-Digit Display.
.c¥ Annunciators—Hold, Max/Min, KHz,
MHz, Low-bat, Continuance.
U¥ 1 annunciator drive pin for unit display.
t4¥ 3 decimal point drivers with 3 independent
control pins.
¥ Polarity driver.
e¥ Displays "OL" for input over range.
e¤ Provides serial data output.
h¤ Guaranteed zero reading with zero input.
S¤ True polarity indication for precision null detec-
tation.
¤ Convenient 9V battery operation.
www.Da¤ Low noise A/D converter:
Description
The ES5108 is design for 3 1/2-Digit Digital Multi-
meter which combines an integrated A/D converter,
MAX/MIN, hold, short circuit beeper, low battery de-
tector, a frequency counter, and serial data output.
A ’HOLD’ input allows the ES5108 to hold the cur-
rent A/D readout or frequency readout. The frequency
counter is auto-ranging from 2KHz to 20MHz over a
five decade range with KHz and MHz annunciators.
Short circuit beeper will sound whenever the readout
is less than 30 after enabling the short circuit beeper.
This feature is useful in detecting short circuits without
watching the LCD.
The ES5108 provides 3 independent decimal point driv-
ing pins for the manufacturer to determine which deci-
mal point or unit is display, the 3 decimal point drivers
are built-in ES5108.
Application
Digital panel meters, digital multimeters, thermome-
ters, capacitance meters, pH meters, photometers, etc.
1 July 4, 2002
1 page  
¡¢
£
CYRUSTEK CO.
ES5108 3 1/2 Digit
ADC with serial output
Pin Description
Pin No.
1
2
3
4
5
6
7
8
Symbol
VREF-
VREF+
DGND
OSC3
OSC2
OSC1
INT
FREQ/VOLT
Type
-
-
-
-
-
-
O
I
X 9 V+ P
10 CONT/-/MHz O
11 B4/C4/DP3 O
12 KHz/F3/E3 O
13 A3/G3/D3 O
14 B3/C3/DP2 O
15 HOLD/F2/E2 O
16 A2/G2/D2 O
17 B2/C2/DP1 O
18 MAX/F1/E1 O
19 A1/G1/D1 O
20 B1/C1/BAT O
21
COM1
O
22
COM2
O
23
COM3
O
24
FREQ-in
I
25
DINT
O
26 ANNUNC O
27 DP1 I
28 DP2 I
29 DP3 I
30
RESET
I
31 MAX
32 HOLD
33 LB
34 BZOUT
35 BZINS
36 CLK
37 SDO
continued on next pageYYY
I
I
O
O
I
I
O
Description
Low differential reference input connection.
High differential reference input connection.
Pull high to V+ all LCD segments will be activated.
Crystal oscillator connection.(RC)
Crystal oscillator connection.(input)
Crystal oscillator connection.(output)
Integration status flag.
Frequency counter/voltage measurement select pin. Connecting to V+
will enable the frequency counter, connecting to TEST1 or open will ex-
ecute voltage measurement. This pin is internally pull down to TEST1.
Positive supply voltage.
LCD segment drive. (Continuity., polarity, MHz)
LCD segment drive. (B4, C4, decimal point3)
LCD segment drive. (KHz, F3, E3)
LCD segment drive. (A3, G3, D3)
LCD segment drive. (B3, C3, decimal point2)
LCD segment drive. (Data Hold, F2, E2)
LCD segment drive. (A2, G2, D2)
LCD segment drive. (B2, C2, decimal point 1)
LCD segment drive. (Max, F1, E1)
LCD segment drive. (A1, G1, D1)
LCD segment drive. (B1, C1, low battery)
LCD common drive#1.
LCD common drive#2.
LCD common drive#3.
Frequency counter input pin.
De-Integration status flag.
Square wave output at the LCD backplane frequency, synchronized to
COM1. Connecting an LCD segment to ANNUNC pin turns it on; con-
necting to backplane turns it off.
1st decimal point selection input for voltage measurement, internally
pulled-down to TEST1.
2nd decimal point selection input for voltage measurement, internally
pulled-down to TEST1.
3rd decimal point selection input for voltage measurement, internally
pulled-down to TEST1.
Reset input pin. Connecting to V+ will cancel both MAX/MIN and
Hold functions.
MAX input pin. Pulse to V+ to enable MAX function.
Hold input pin. Connecting to V+ for hold function.
Low battery flag. Pull high if low battery.
Piezo buzzer output. Driving a buzzer at 2.5KHz audio frequency.
Buzzer control slave input.
External clock input pin for serial data accessing.
Serial data output pin.
`
This table is for ES5108F
5
July 4, 2002
5 Page 
¡¢
£
CYRUSTEK CO.
ES5108 3 1/2 Digit
ADC with serial output
2. Frequency Mode
(a) D0(KHz/MHz) : ’1’ for MHz and ’0’ for KHz.
Special data format
Items
D15...D6
D5 D4 D3 D2 D1 D0
Initial state(0000) Random and don’t care 1 1 1 1 1 1
Positive Overflow(OL) Random and don’t care 0 0 1 1 1 1
Negative Overflow(-OL) Random and don’t care 0 0 1 1 1 0
12 LCD Segment Drivers
The ES5108 drives a triplex LCD with three commons. This LCD includes 3 1/2-digits, three decimal, points polarity
sign and annunciators for peakhold, data-hold, continuity, frequency and low battery. The following figure indicates the
assignments of the display segments to the commons and segment drive lines.
12.1 ES5108F
Pin No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
COM1
CONT
B4
KHz
A3
B3
HOLD
A2
B2
MAX
A1
B1
COM1
–
–
COM2
–
C4
F3
G3
C3
F2
G2
C2
F1
G1
C1
–
COM2
–
COM3
MHz
DP3
E3
D3
DP2
E2
D2
DP1
E1
D1
BAT
–
–
COM3
12.2 ES5108S
Pin No.
3
4
5
6
7
8
9
10
11
12
13
14
15
16
COM1
CONT
MIN
KHz
A3
B3
HOLD
A2
B2
MAX
A1
B1
COM1
–
–
COM2
–
B4/C4
F3
G3
C3
F2
G2
C2
F1
G1
C1
–
COM2
–
COM3
MHz
DP3
E3
D3
DP2
E2
D2
DP1
E1
D1
BAT
–
–
COM3
11 July 4, 2002
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet ES5108.PDF ] | |
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