ISL76534 Datasheet, PDF (5/24 Pages) Intersil Corporation – 14-channel gamma references

ISL76534
Pin Descriptions (Continued)
PIN #
PIN NAME
PIN TYPE
PIN FUNCTION
EQUIVALENT
CIRCUIT
11, 23, 26
GND
Power Ground
12
SCL
Digital Input I²C clock (high impedance input)
3
13
SDA
Digital I/O I²C data (high impedance input/open-drain output)
3
14
WP
Digital Input I²C Write Protection, active low:
2
0: Prevent I²C data writes to internal DAC registers and EEPROM
(this is the default setting if pin is left floating)
1: Allow I²C data writes to internal DAC registers and EEPROM
(pull-up pin externally)
Note: pin has an internal pull-down to GND of 10MΩ (typical)
15
D_VDD
Digital Power Digital power supply. Include a local 0.1µF ceramic bypass capacitor to the system ground;
1
place as close to the pin as possible.
24
NC
Not Connected Internally. Acceptable to leave pin floating.
25
INN_COM Analog Input V_COM amplifier inverting input
6
27
OUTCOM Analog Output V_COM amplifier output
7
28
A_VDD_AMP Analog Power Analog power supply for V_COM amplifier. It is acceptable that A_VDD_AMP is tied to A_VDD, or
1
set to a lower voltage: A_VDD_AMP ≤ A_VDD. Include a bulk 4.7µF capacitor (or share with the
A_VDD bulk), and a local 0.1µF ceramic bypass capacitor to the system ground. Place the
0.1µF as close to the pin as possible; the bulk capacitor may be placed farther away from
the IC.
-
THERMAL PAD
GND
Thermal pad. Electrically connected to GND (pins 11, 23, 26). Connect to ground plane on
PCB to maximize thermal performance.
DVDD
DVDD
AVDD,
AVDD_AMP,
DVDD
GND
ACTIVE
CLAMP
CIRCUIT 1
SNAPBACK
WP, A0
0.5µA
GND
CIRCUIT 2
SCL, SDA
GND
CIRCUIT 3
AVDD
REFIN
GND
CIRCUIT 4
AVDD
GND
CIRCUIT 5
OUT1-OUT14
AVDD_AMP
GND
OUTCOM
CIRCUIT 7
AVDD_AMP
INN_COM
GND
CIRCUIT 6
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5
FN8866.0
July 27, 2016