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PDF ICL7107 Data sheet ( Hoja de datos )
| Número de pieza | ICL7107 | |
| Descripción | 31/2 Digit/ LCD/LED Display/ A/D Converters | |
| Fabricantes | Intersil | |
| Logotipo |  |
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DATASHEET
31/2 Digit, LCD/LED Display, A/D Converters
ICL7106, ICL7107, ICL7107S
Features
The Intersil ICL7106 and ICL7107 are high performance, low
power, 31/2 digit A/D converters. Included are seven segment
decoders, display drivers, a reference, and a clock. The
ICL7106 is designed to interface with a liquid crystal display
(LCD) and includes a multiplexed backplane drive; the ICL7107
will directly drive an instrument size light emitting diode (LED)
display.
The ICL7106 and ICL7107 bring together a combination of
high accuracy, versatility, and true economy. It features
auto zero to less than 10µV, zero drift of less than 1µV/°C,
input bias current of 10pA (max) and rollover error of less than
one count. True differential inputs and reference are useful in
all systems, but give the designer an uncommon advantage
when measuring load cells, strain gauges and other bridge
type transducers. Finally, the true economy of single power
supply operation (ICL7106), enables a high performance panel
meter to be built with the addition of only 10 passive
components and a display.
• Guaranteed zero reading for 0V input on all scales
• True polarity at zero for precise null detection
• 1pA typical input current
• True differential input and reference, direct display drive
- LCD ICL7106, LED lCL7107
• Low noise - less than 15µVP-P
• On-chip clock and reference
• Low power dissipation - typically less than 10mW
• No additional active circuits required
• Enhanced display stability
• Pb-free (RoHS compliant)
Ordering Information
PART NUMBER
(Note 2)
PART MARKING
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
PKG. DWG. #
ICL7106CPLZ
ICL7106CPLZ
0 to 70
40 Ld PDIP (Note 3)
E40.6
ICL7106CM44Z (Note 4)
ICL7106 CM44Z
0 to 70
44 Ld MQFP
Q44.10x10
ICL7106CM44ZT (Notes 4, 5)
ICL7106 CM44Z
0 to 70
44 Ld MQFP Tape and Reel
Q44.10x10
ICL7107CPLZ
ICL7107CPLZ
0 to 70
40 Ld PDIP (Note 3)
E40.6
ICL7107SCPLZ
ICL7107SCPLZ
0 to 70
40 Ld PDIP (Notes 1, 3)
E40.6
ICL7107CM44Z (Note 4)
ICL7107 CM44Z
0 to 70
44 Ld MQFP
Q44.10x10
ICL7107CM44ZT (Notes 4, 5)
ICL7107 CM44Z
0 to 70
44 Ld MQFP Tape and Reel
Q44.10x10
NOTES:
1. “S” indicates enhanced stability.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications.
4. For Moisture Sensitivity Level (MSL), please see product information page for ICL7106, ICL7107, ICL7107S. For more information on MSL, please see
tech brief TB363.
5. Please refer to TB347 for details on reel specifications.
October 24, 2014
FN3082.9
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2002, 2004, 2005, 2014. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ICL7106, ICL7107, ICL7107S
Design Information Summary Sheet
• OSCILLATOR FREQUENCY
fOSC = 0.45/RC
COSC > 50pF; ROSC > 50kΩ
fOSC (Typ) = 48kHz
• OSCILLATOR PERIOD
tOSC = RC/0.45
• INTEGRATION CLOCK FREQUENCY
fCLOCK = fOSC/4
• INTEGRATION PERIOD
tINT = 1000 x (4/fOSC)
• 60/50Hz REJECTION CRITERION
tINT/t60Hz or tlNT/t60Hz = Integer
• OPTIMUM INTEGRATION CURRENT
IINT = 4µA
• FULL SCALE ANALOG INPUT VOLTAGE
VlNFS (Typ) = 200mV or 2V
• INTEGRATE RESISTOR
RINT = V----I-I-I-NN----F-T--S--
• INTEGRATE CAPACITOR
CINT = ---t--I--N---V-T---I--N---I-T-I--N----T----
• INTEGRATOR OUTPUT VOLTAGE SWING
VINT = ---t--I--N---C-T---I--N---I-T-I--N----T----
• VINT MAXIMUM SWING:
(V- + 0.5V) < VINT < (V+ - 0.5V), VINT (Typ) = 2V
• DISPLAY COUNT
COUNT = 1000 V---V--R---I-E-N---F-
• CONVERSION CYCLE
tCYC = tCL0CK x 4000
tCYC = tOSC x 16,000
when fOSC = 48kHz; tCYC = 333ms
• COMMON MODE INPUT VOLTAGE
(V- + 1V) < VlN < (V+ - 0.5V)
• AUTO-ZERO CAPACITOR
0.01µF < CAZ < 1µF
• REFERENCE CAPACITOR
0.1µF < CREF < 1µF
• VCOM
Biased between Vi and V-.
• VCOM V+ - 2.8V
Regulation lost when V+ to V- < 6.8V
If VCOM is externally pulled down to (V+ to V-)/2,
the VCOM circuit will turn off.
• ICL7106 POWER SUPPLY: SINGLE 9V
V+ - V- = 9V
Digital supply is generated internally
VGND V+ - 4.5V
• ICL7106 DISPLAY: LCD
Type: Direct drive with digital logic supply amplitude.
• ICL7107 POWER SUPPLY: DUAL ±5.0V
V+ = +5V to GND
V- = -5V to GND
Digital Logic and LED driver supply V+ to GND
• ICL7107 DISPLAY: LED
Type: Nonmultiplexed Common Anode
Typical Integrator Amplifier Output Waveform (INT Pin)
AUTO ZERO PHASE
(COUNTS)
2999 - 1000
SIGNAL INTEGRATE
PHASE FIXED
1000 COUNTS
DEINTEGRATE PHASE
0 - 1999 COUNTS
Submit Document Feedback
5
TOTAL CONVERSION TIME = 4000 x tCLOCK = 16,000 x tOSC
FN3082.9
October 24, 2014
5 Page 
ICL7106, ICL7107, ICL7107S
Typical Applications
The ICL7106 and ICL7107 may be used in a wide variety of
configurations. The circuits which follow show some of the
possibilities, and serve to illustrate the exceptional versatility of
these A/D converters.
The following application notes contain very useful information
on understanding and applying this part and are available from
Intersil Corporation.
Application Notes
NOTE #
DESCRIPTION
AN016 “Selecting A/D Converters”
AN017 “The Integrating A/D Converter”
AN018 “Do’s and Don’ts of Applying A/D Converters”
AN023 “Low Cost Digital Panel Meter Designs”
AN046 “Building a Battery-Operated Auto Ranging DVM with the ICL7106”
AN052 “Tips for Using Single Chip 31/2 Digit A/D Converters”
AN9609 “Overcoming Common Mode Range Issues When Using Intersil
Integrating Converters”
Typical Applications
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
REF HI 36
REF LO 35
CREF 34
CREF 33
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
G2 25
C3 24
A3 23
G3 22
BP 21
TO PIN 1
100kΩ
100pF
SET VREF
= 100mV
1kΩ 22kΩ
0.1µF
0.47µF
47kΩ
1MΩ
0.01µF
0.22µF
+
IN
-
+
9V
-
TO DISPLAY
TO BACKPLANE
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
REF HI 36
REF LO 35
CREF 34
CREF 33
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
G2 25
C3 24
A3 23
G3 22
GND 21
TO PIN 1
100kΩ
100pF
SET VREF
= 100mV
1kΩ 22kΩ
0.1µF
0.47µF
47kΩ
1MΩ
0.01µF
+5V
+
IN
-
0.22µF
-5V
TO DISPLAY
Values shown are for 200mV full scale, 3 readings/sec., floating supply
voltage (9V battery).
FIGURE 11. ICL7106 USING THE INTERNAL REFERENCE
Values shown are for 200mV full scale, 3 readings/sec. IN LO may be
tied to either COMMON for inputs floating with respect to supplies, or
GND for single ended inputs. (See discussion in “Analog COMMON” on
page 7.)
FIGURE 12. ICL7107 USING THE INTERNAL REFERENCE
Submit Document Feedback 11
FN3082.9
October 24, 2014
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ICL7107.PDF ] | |
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