MAX4800 데이터 시트보기 (PDF) - Maxim Integrated
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MAX4800 Datasheet PDF : 21 Pages
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Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
Table 1. Serial Interface Programming
D0
(LSB)
D1
D2
L
H
L
H
L
H
X
XX
X
XX
X = Don’t Care
DATA BITS
D3 D4 D5
L
H
L
H
L
H
XXX
XXX
D6
D7
(MSB)
L
H
L
H
X
X
X
X
CONTROL BITS
LE
CLR
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
X
H
SW0
OFF
ON
OFF
SW1
OFF
ON
OFF
SW2
FUNCTION
SW3 SW4
SW5
OFF
ON
OFF
ON
OFF
ON
OFF
ON
HOLD PREVIOUS STATE
OFF OFF OFF OFF
SW6
OFF
ON
OFF
SW7
OFF
ON
OFF
Applications Information
Logic Levels
The MAX4800/MAX4801/MAX4802 digital interface
inputs CLK, DIN, LE, and CLR are tolerant of up to
+13.2V, independent of the VDD supply voltage, allow-
ing compatibility with higher voltage controllers.
Daisy Chaining Multiple Devices
Digital output DOUT is provided to allow the connection
of multiple MAX4800/MAX4801/MAX4802 devices by
daisy chaining (Figure 3). Connect each DOUT to the
DIN of the subsequent device in the chain. Connect CLK,
LE, and CLR inputs of all devices, and drive LE logic-low
to update all devices simultaneously. Drive CLR high to
open all the switches simultaneously. Additional shift reg-
isters may be included anywhere in series with the
MAX4800/MAX4801/MAX4802 data chain.
Supply Sequencing and Bypassing
The MAX4800/MAX4801/MAX4802 do not require spe-
cial sequencing of the VDD, VPP, and VNN supply volt-
ages; however, analog switch inputs must be
unconnected, or satisfy VNN ≤ (VCOM_, VNO_) ≤ VPP
during power-up and power-down. Bypass VDD, VNN,
and VPP to GND with a 0.1µF ceramic capacitor as
close to the device as possible.
Exposed Paddle
The MAX4800 and MAX4802 provide an exposed pad-
dle for improved thermal performance in the TQFN
package. Connect the exposed paddle to VNN.
Chip Information
PROCESS: BCDMOS
CONNECT EXPOSED PADDLE TO VNN
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