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Details, datasheet, quote on part number:ICL7106RCPL
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Datasheet text preview:
SEMICONDUCTOR
ICL7106, ICL7107
31/2 Digit LCD/LED Display A/D Converter
Description
The Harris 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.
January 1994
Features
· 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 lCL7l07 · Low Noise - Less Than 15µVp-p · On Chip Clock and Reference · Low Power Dissipation - Typically Less Than 10mW · No Additional Active Circuits Required · New Small Outline Surface Mount Package Available
Ordering Information
PART NUMBER ICL7106CPL ICL7106RCPL ICL7106CM44 ICL7107CPL ICL7107RCPL ICL7107CM44 TEMPERATURE RANGE 0oC to +70oC 0oC to +70oC 0oC to +70oC 0 C to +70 C 0oC to +70oC 0 C to +70 C
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PACKAGE 40 Lead Plastic DIP 40 Lead Plastic DIP (Note 1) 44 Lead Metric Plastic Quad Flatpack 40 Lead Plastic DIP 40 Lead Plastic DIP (Note 1) 44 Lead Metric Plastic Quad Flatpack
NOTE: 1. "R" indicates device with reversed leads.
Pinouts
ICL7106, ICL7107 (PDIP) TOP VIEW
REF LO REF HI CREF+ V+ D1 C1 B1 (1's) A1 F1 G1 E1 D2 C2 (10's) B2 A2 F2 E2 D3 (100's) B3 F3 E3 (1000) AB4 (MINUS) POL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 OSC 1 39 OSC 2 38 OSC 3 37 TEST 36 REF HI 35 REF LO 34 CREF+ 33 CREF32 COMMON 31 IN HI 30 IN LO 29 A-Z 28 BUFF 27 INT 26 V25 G2 (10's) 24 C3 23 A3 22 G3 21 BP/GND A1 F1 G1 E1 D2 C2 B2 A2 F2 E2 D3 (100's) NC NC TEST OSC 3 NC OSC 2 OSC 1 V+ D1 C1 B1 1 44 43 42 41 40 39 38 37 36 35 34 33 2 32 3 4 5 6 7 8 9 10 31 30 29 28 27 26 25 24 NC G2 C3 A3 G3 BP/GND POL AB4 E3 F3 B3
ICL7106, ICL7107 (MQFP) TOP VIEW
COMMON CREFIN LO BUFF
IN HI
A-Z
INT
11 23 12 13 14 15 16 17 18 19 20 21 22
V-
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures. Copyright
© Harris Corporation 1993
File Number
3082
2-33
Specifications ICL7106, ICL7107
Absolute Maximum Ratings
Supply Voltage ICL7106, V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V ICL7107, V+ to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V ICL7107, V- to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-9V Analog Input Voltage (Either Input) (Note 1). . . . . . . . . . . . . V+ to VReference Input Voltage (Either Input) . . . . . . . . . . . . . . . . . V+ to VClock Input ICL7106 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TEST to V+ ICL7107 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND to V+
Thermal Information
Thermal Resistance (MAX, See Note 1) JA 40 Pin Plastic Package . . . . . . . . . . . . . . . . . . . . . . . . 50oC/W 44 Pin MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . 80oC/W Maximum Power Dissipation ICL7106 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0W ICL7107 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2W Operating Temperature Range . . . . . . . . . . . . . . . . . . 0oC to +70oC Storage Temperature Range. . . . . . . . . . . . . . . . . . -65oC to +150oC Lead Temperature (Soldering 10s Max) . . . . . . . . . . . . . . . . +265oC Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150oC
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Electrical Specifications (Note 3)
PARAMETERS SYSTEM PERFORMANCE Zero Input Reading VIN = 0.0V, Full-Scale = 200mV VlN = VREF, VREF = 100mV -VIN = +VlN 200mV Difference in Reading for Equal Positive and Negative Inputs Near Full-Scale Full-Scale = 200mV or Full-Scale = 2V Maximum Deviation from Best Straight Line Fit (Note 5) VCM = 1V, VIN = 0V, Full-Scale = 200mV (Note 5) VIN = 0V, Full-Scale = 200mV (Pk-Pk Value Not Exceeded 95% of Time) VlN = 0 (Note 5) VlN = 0, 0 < TA < +70 C (Note 5) VIN = 199mV, 0o < TA < +70oC, (Ext. Ref. 0ppm/oC) (Note 5)
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TEST CONDITIONS
MIN
TYP
MAX
UNIT
-000.0
±000.0 999/ 1000 ±0.2
+000.0
Digital Reading Digital Reading Counts
Ratiometric Reading
999
1000 ±1
Rollover Error
-
Linearity
-
±0.2 50 15
±1 -
Counts µV/V µV pA µV/oC ppm/oC
Common Mode Rejection Ratio Noise
-
Leakage Current Input Zero Reading Drift Scale Factor Temperature Coefficient
-
1 0.2 1
10 1 5
End Power Supply Character V+ Supply Cur- VIN = 0 (Does Not Include LED Current for ICL7107) rent End Power Supply Character V- Supply Current ICL7107 Only COMMON Pin Analog Common Voltage 25k Between Common and Positive Supply (With Respect to + Supply) 25k Between Common and Positive Supply (With Respect to + Supply)
-
0.8
1.8
mA
2.4
0.6 2.8
1.8 3.2
mA V ppm/oC
Temperature Coefficient of Analog Common
-
80
-
DISPLAY DRIVER ICL7106 ONLY Pk-Pk Segment Drive Voltage Pk-Pk Backplane Drive Voltage V+= to V- = 9V, (Note 4) 4 5 6 V
2-34
ICL7106, ICL7107
Electrical Specifications (Note 3) (Continued)
PARAMETERS ICL7107 ONLY Segment Sinking Current (Except Pin 19 and 20) Pin 19 Only Pin 20 Only V+ = 5V, Segment Voltage = 3V 5 10 4 8 16 7 mA mA mA TEST CONDITIONS MIN TYP MAX UNIT
NOTES: 1. Input voltages may exceed the supply voltages provided the input current is limited to ±100µA. 2. Dissipation rating assumes device is mounted with all leads soldered to printed circuit board. 3. Unless otherwise noted, specifications apply to both the ICL7106 and ICL7107 at TA = +25oC, fCLOCK = 48kHz. ICL7106 is tested in the circuit of Figure 1. ICL7107 is tested in the circuit of Figure 2. 4. Back plane drive is in phase with segment drive for `off' segment, 180o out of phase for `on' segment. Frequency is 20 times conversion rate. Average DC component is less than 50mV. 5. Not tested, guaranteed by design.
Typical Applications and Test Circuits
+ IN R1 R3 OSC 1 40 OSC 2 39 OSC 3 38 C4 TEST 37 R4 C1 R5 C5 C2 R2 C3 DISPLAY 9V
ICL7106
20 POL 19 AB4 G1 D1 C1 B1 A1 D2 10 C2 11 B2 12 A2 15 D3 16 B3 V+ E1 14 E2 18 E3 F1 13 F2 17 F3
C1 = 0.1µF C2 = 0.47µF C3 = 0.22µF C4 = 100pF C5 = 0.02µF R1 = 24k R2 = 47k R3 = 100k R4 = 1k R5 = 1M
REF HI 36
REF LO 35
CREF+ 34
CREF- 33
COM 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V- 26
G2 25
C3 24
A3 23
G3 22
1
2
3
4
5
6
7
8
9
DISPLAY
FIGURE 1. ICL7106 TEST CIRCUIT AND TYPICAL APPLICATION WITH LCD DISPLAY COMPONENTS SELECTED FOR 200mV FULLSCALE
+5V R5 C1 C5 C2 R2 C3 DISPLAY + IN R1 R3 OSC 1 40 OSC 2 39 OSC 3 38 C4 TEST 37 R4 -5V
BP 21
ICL7107
20 POL 19 AB4 G1 D1 C1 B1 A1 D2 10 C2 11 B2 12 A2 15 D3 16 B3 V+ E1 14 E2 18 E3 F1 13 F2 17 F3
C1 = 0.1µF C2 = 0.47µF C3 = 0.22µF C4 = 100pF C5 = 0.02µF R1 = 24k R2 = 47k R3 = 100k R4 = 1k R5 = 1M
REF HI 36
REF LO 35
CREF+ 34
CREF- 33
COM 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V- 26
G2 25
C3 24
A3 23
G3 22
1
2
3
4
5
6
7
8
9
DISPLAY
FIGURE 2. ICL7107 TEST CIRCUIT AND TYPICAL APPLICATION WITH LED DISPLAY COMPONENTS SELECTED FOR 200mV FULLSCALE
2-35
GND 21
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