ISL24212IRTZ Intersil, ISL24212IRTZ Datasheet

ISL24212IRTZ VCOM Driver + Calibrator W/ An Up Down

ISL24212IRTZ

Manufacturer Part Number
ISL24212IRTZ
Description
ISL24212IRTZ VCOM Driver + Calibrator W/ An Up Down
Manufacturer
Intersil
Series
-r
Type
Calibratorr
Datasheet

Specifications of ISL24212IRTZ

Applications
LCD Drive, Reference Voltage Generator
Mounting Type
Surface Mount
Package / Case
10-WFDFN Exposed Pad
Rohs Compliant
Yes
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Programmable V
Output Buffer
ISL24212
The ISL24212 is an 8-bit programmable current sink that can be
used in conjunction with an external voltage divider to generate a
voltage source (V
voltage and ground. The current sink’s full-scale range is
controlled by an external resistor, R
choice of external resistors R
can be controlled between any arbitrary voltage range. The
ISL24212 has an 8-bit data register and 8-bit EEPROM for storing
both a volatile and a permanent value for its output, accessible
through a single up/down counter interface pin (CTL). After the
part is programmed with the desired V
Enable pin (CE) can be grounded to prevent further changes. On
every power-up, the EEPROM contents are automatically
transferred to the data register and the pre-programmed output
voltage appears at the VCOM_OUT pin.
The ISL24212 also features an integrated, wide-bandwidth, high
output drive buffer amplifier that can directly drive the V
input of an LCD panel.
The ISL24212 is available in an 10 Ld 3mm x 3mm TDFN
package. This package has a maximum height of 0.8mm for very
low profile designs. The ambient operating temperature range is
-40°C to +85°C
March 15, 2011
FN7590.0
CONTROLLER
* 0, 1, TRISTATE
MICRO-
.
COM
) positioned between the analog supply
I/O PIN*
I/O PIN
1
1
and R
SET
2
, the V
. With the appropriate
COM
COM
value, the Counter
COM
7
8
FIGURE 1. TYPICAL ISL24212 APPLICATION
CTL
CE
voltage range
Calibrator with EEPROM and
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
COM
6
ISL24212
V
DD
5
1-888-INTERSIL or 1-888-468-3774
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
VCOM_OUT
Features
• Adjustable 8-bit, 256-Step, Current Sink Output
• 60MHz V
• On-Chip 8-Bit EEPROM
• Up/Down Counter Interface
• Guaranteed Monotonic Over-Temperature
• 4.5V to 19.0V Analog Supply Range for Normal Operation
• 2.25V to 3.6V Logic Supply Voltage Operating Range
• Pb-free (RoHS-compliant)
• Ultra-Thin 10 Ld TDFN (3x3x0.8mm max)
Applications
• LCD Panel V
• Electrophoretic Display V
Related Literature
• See Application Note “ISL24212IRTZ-EVALZ Evaluation Board
DVR_OUT
3
(10.8V Minimum Analog Supply Voltage for Programming)
User Guide” (Coming Soon)
AV
DD
SET
IN
All other trademarks mentioned are the property of their respective owners.
N
COM
2
1
10
9
COM
Buffer/Amplifier
R
|
Generator
SET
Copyright Intersil Americas Inc. 2011. All Rights Reserved
R
R
2
1
COM
V
Generator
COM
LCD PANEL

Related parts for ISL24212IRTZ

ISL24212IRTZ Summary of contents

Page 1

... Logic Supply Voltage Operating Range value, the Counter • Pb-free (RoHS-compliant) • Ultra-Thin 10 Ld TDFN (3x3x0.8mm max) Applications • LCD Panel V COM • Electrophoretic Display V COM Related Literature • See Application Note “ISL24212IRTZ-EVALZ Evaluation Board User Guide” (Coming Soon DVR_OUT ...

Page 2

Block Diagram DNC DIGITAL 7 UP/DOWN CTL INTERFACE COUNTER Pin Configuration Pin Descriptions PIN PIN NAME NUMBER IN 1 Negative input of the op amp. To create a unity-gain V N DVR_OUT 2 ...

Page 3

... Ordering Information PART NUMBER (Notes ISL24212IRTZ 4212 ISL24212IRTZ-EVALZ Evaluation Board NOTES: 1. Add “-T*” suffix for tape and reel. Please refer to 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 ...

Page 4

... Ld TDFN Package (Notes Moisture Sensitivity (see Technical Brief TB363) All Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Level 1 Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+150°C +0.3V Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C DD Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp DD Recommended Operating Conditions Operating Range 4.5V to 19V 2.25V to 3.6V DD Ambient Operating Temperature . . . . . . . . . . . . . . . . . . . . . -40° ...

Page 5

Electrical Specifications Test Conditions: V connected unless otherwise specified. Typicals are (Continued) -40°C to +85°C. SYMBOL PARAMETER V Output Swing High OH I Short Circuit Current (Sinking) SC Short Circuit Current (Sourcing) SR Slew ...

Page 6

Application Information LCD panels have a V (common voltage) that must be precisely COM set to minimize flicker. Figure 3 shows a typical V circuit using a mechanical potentiometer, and the equivalent circuit replacement using the ISL24212. Having a digital ...

Page 7

The maximum value of I can be calculated by DVR_OUT substituting the maximum register value of 255 into Equation 2, resulting in Equation 3: A VDD ( ) MAX ------------------- - = DVROUT 20R SET Equation 2 can also be ...

Page 8

By finding the difference of Equation 13 and Equation 12, the total span of V can be found: COM R ⎛ ⎞ ⎛ ⎛ ⎞ V SPAN AV ⎜ ⎟ 1 ⎜ ------------------- - --------- - = – ...

Page 9

CE Pin To change the counter controlling the output voltage, the CE (Counter Enable) pin must be pulled high (V is pulled low, the counter value is loaded from EEPROM, which takes 10ms (during which the inputs should remain constant). ...

Page 10

Up/Down Counter Waveforms The operation modes of the ISL24212 is shown in Table 2. TABLE 2. ISL 24212 OPERATION MODES INPUT CTL CE COUNTER V COM_OUT Ignore first CTL pulse Hi to Mid Hi ...

Page 11

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. ...

Page 12

Package Outline Drawing L10.3x3A 10 LEAD THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE Rev 5, 3/10 3.00 B 3.00 TOP VIEW ( 2.30 ) (2.90 .50 ) TYPICAL RECOMMENDED LAND PATTERN 12 ISL24212 6 A PIN 1 INDEX ...

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