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PDF ISL24212 Data sheet ( Hoja de datos )
| Número de pieza | ISL24212 | |
| Descripción | Programmable Vcom Calibrator | |
| Fabricantes | Intersil | |
| Logotipo |  |
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Programmable VCOM Calibrator with EEPROM and
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 (VCOM) positioned between the analog supply
voltage and ground. The current sink’s full-scale range is
controlled by an external resistor, RSET. With the appropriate
choice of external resistors R1 and R2, the VCOM voltage range
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 VCOM value, the Counter
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 VCOM
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.
Features
• Adjustable 8-bit, 256-Step, Current Sink Output
• 60MHz VCOM Buffer/Amplifier
• On-Chip 8-Bit EEPROM
• Up/Down Counter Interface
• Guaranteed Monotonic Over-Temperature
• 4.5V to 19.0V Analog Supply Range for Normal Operation
(10.8V Minimum Analog Supply Voltage for Programming)
• 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 VCOM Generator
• Electrophoretic Display VCOM Generator
Related Literature
• See Application Note “ISL24212IRTZ-EVALZ Evaluation Board
User Guide” (Coming Soon)
VDD
AVDD
MICRO-
CONTROLLER
I/O PIN*
I/O PIN
* 0, 1, TRISTATE
7
CTL
8
CE
63
2
DVR_OUT
ISL24212
1
INN
10
VCOM_OUT
R1
R2
9
SET
RSET
5
FIGURE 1. TYPICAL ISL24212 APPLICATION
LCD PANEL
VCOM
March 15, 2011
FN7590.0
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 Inc. 2011. 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  
ISL24212
Electrical Specifications Test Conditions: VDD = 3.3V, AVDD = 18V, RSET = 5kΩ, R1 = 10kΩ, R2 = 10kΩ, (See Figure 5), VCOM_OUT pin
connected to INN, unless otherwise specified. Typicals are at TA = +25°C. Boldface limits apply over the operating temperature range,
-40°C to +85°C. (Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
(Note 6)
MAX
TYP (Note 6) UNITS
VOH Output Swing High
ISC Short Circuit Current (Sinking)
Short Circuit Current (Sourcing)
IL = 5mA
17.85
300
450
17.9
430
555
V
mA
mA
SR Slew Rate (Rising)
1KΩ || 8pF Load
70 116
V/µs
Slew Rate (Falling)
1KΩ || 8pF Load
50 93
V/µs
tS Settling Time to 0.2%
BW -3dB Bandwidth
150 ns
60 MHz
EEPROM CHARACTERISTICS
tPROG EEPROM Programming Time (internal)
UP/DOWN COUNTER CONTROL INPUTS (SEE FIGURE 11)
100 ms
VIH CE and CTL Input Logic High Threshold
0.7*VDD
VIL CE and CTL Input Logic Low Threshold
ICS_PD CE Input Pull Down Current Sink
0.5
ICTL CTL Input Bias Current
CTL = GND (sourcing)
7
CTL = VDD (sinking)
7
tST CE to CTL Start Delay
50
tREAD EEPROM Recall Time (after CE de-asserted)
tH_REJ CTL High Pulse Rejection Width
tL_REJ CTL Low Pulse Rejection Width
tH_MIN CTL High Minimum Valid Pulse Width
200
tL_MIN CTL Low Minimum Valid Pulse Width
200
tMTC CTL Minimum Time Between Counts
10
VPROG CTL EEPROM Program Voltage (see Figure 9)
4.9
tPROG CTL EEPROM Programming Signal Time
200
tH_PROP CTL High-to-Mid to DVR_OUT propagation time
65
tL_PROP CTL Low-to-Mid to DVR_OUT propagation time
65
NOTE:
6. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
0.3*VDD
1.5
15
15
10
20
20
19
V
V
µA
µA
µA
µs
ms
µs
µs
µs
µs
µs
V
µs
µs
µs
5 FN7590.0
March 15, 2011
5 Page 
ISL24212
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make
sure you have the latest revision.
DATE
REVISION
CHANGE
3/15/11
FN7590.0 Initial Release.
Products
Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products
address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, handheld products, and notebooks.
Intersil's product families address power management and analog signal processing functions. Go to www.intersil.com/products for a
complete list of Intersil product families.
*For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device information page
on intersil.com: ISL24212
To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff
FITs are available from our website at http://rel.intersil.com/reports/search.php
For additional products, see www.intersil.com/product_tree
Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted
in the quality certifications found at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time
without notice. 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.
For information regarding Intersil Corporation and its products, see www.intersil.com
11 FN7590.0
March 15, 2011
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