ICL7106, ICL7107, ICL7106S, ICL7107S 3 / Digit, 2 January 1998 LCD/LED Display, A/D Converters Features Description • Guaranteed Zero Reading for 0V Input on All Scales The Intersil ICL7106 and ICL7107 are high performance
ICL7106/7107 IA BLE A VA ICL7106/ICL7107 1 3 ⁄ 2 Digit A/D Converters General Description Features The Maxim ICL7106/ICL7107 are monolithic analog-to- S Improved 2nd Source (see Page 3 for “Maxim digital converters (ADCs). They have very
/KIT, LEDs for ICL7107EV/KIT), the exceptional noise performance of the ICL7106 and passive components, and miscellaneous hardware. ICL7107. In fact, the noise level (not exceeded 95% of time) Assembly Instructions is about
8) R STD The ICL7107 is an LED version of the ICL7106, and is a bit trickier to use in this application. First the over-range/under- range logic must be changed slightly. Simply replace the V+ quad exclusive-NOR with an LM339; connect the outputs, as before, to the CD4023 triple 3-input NAND. Second, the REF HI ICL7107 requires +5V and -5V rather than the +9V battery R STD used in Figure 1. If battery operation is desired, the negative REF LO supply can be derived from 4 Ni-Cad cells in series and an IN914 or X4
analog-to-digital converters. They differ from the Maxim ●● Hold Pin Allows Indefinite Display Hold ICL7106 and ICL7107 in that the ICL7116 and ICL7117 ●● Guaranteed First Reading Recovery from Overrange have a Hold pin, which makes it possible to hold or “freeze” a reading. These integrating ADCs have very ●● On-Board
0.1µF < CREF < 1µF
VCOM Biased between Vi and V-.
VCOM ≤ V+ - 2.8V
ICL7106 POWER SUPPLY: SINGLE 9V
ICL7107 POWER SUPPLY: DUAL ±5.0V
ICL7107 DISPLAY: LED
12 von 16 ICL7106, ICL7107 Typical Applications (Continued) OSC 1 40 TO PIN 1 OSC 2 39 100kΩ OSC 3 38 100pF SET VREF = 100mV TEST 37 REF HI 36 REF LO 35 1kΩ 10kΩ 10kΩ V+ CREF 34 0.1µF COMMON 32 1.2V (ICL8069) IN HI 31 1MΩ IN
ICL7106CM44_to_ICL7107R... Fertig
COMMON
FIGURE 4B.
FIGURE 4. USING AN EXTERNAL REFERENCE
TEST
The TEST pin serves two functions. On the ICL7106 it is coupled to the internally generated digital supply through a 500Ω resistor
1 R5 14 15 1 10k GND IC1D 2 2 2 4 3 3 3 3 3 1 2 2 3 3 4049N 9 10 - F T 1 2 3 T +F + D V I O GND ICL7107CPLZ A U I S S S E ER V G F F R1 R6 4049N Farnell: 9663568 B O O O T CC P R R INHI 31 B 1M 96,7k COMMON 32 max 200mV C6 INLO 30 7 0 10n R 1 MESS+ L 4 P A G F E D C B A G F E D C B A G F E D C B A MESS
Schaltungistdas nenanschlußpunkt „b"). Die Spannungen ne Erzeugung einer zusätzlichen negativen IC 2 des Typs ICL7107. Hierbei handelt es an den Eingangsklemmen „c" und „d" kön Versorgungsspannung in Verbindung mit nen bis auf c'a. 1,5 V sowohl an die positive den Invertern N 1 bis N 6. sich um einen Analog/Digital-Wandler
Meßwerte SpannunganPin5desIC3Bleichtunter- male Kühlung der Endstufe. setzendieAD-WandlerdesTypsICL7107 halb der Spannung an Pin 6 (Massepoten- Über den Widerstand R 16 gelangt die dieandenEingangspins30,31anliegende tial)absinkt.DaraufhinstrebtderAusgang am Temperatursensor (TS 1) anliegende Meßspannung
Noise limit s AD7631 b 16 ADS1100 ADS1602 AD7621 ADS5547 n ICL7137 t TC7109 AD7942 LTC2255 l 12 ICL7107 ADS574 ADS5220 LTC224263 e R ADS7826 AD9211 ADC083000 8 ADS7827 MAX104 MAX105 4 0 1 10 100 1000 10k 100k 1000k 10M 100M 1000M Conversion rate [Hz] Fig. 19: Resolution vs. conversion rate for some
Bild
Bild
Bild
Bild
Bild
Bild
Bild
Bild
Bild
