DG412 Maxim, DG412 Datasheet - Page 6

• Manufacturer Part Number: DG412
• Description: Maxim's redesigned DG411/DG412/DG413 analog switches now feature low on-resistance matching between switches (3Ω max) and guaranteed on-resistance flatness over the signal range (Δ4Ω max)
• Manufacturer: Maxim

Improved, Quad,
SPST Analog Switches
Using supply voltages other than 15V will reduce the
analog signal range. The DG411/DG412/DG413 switch-
es operate with ±4.5V to ±20V bipolar supplies or with
a +10V to +30V single supply; connect V- to 0V when
operating with a single supply. Also, all device types
can operate with unbalanced supplies such as +24V
and -5V. V
patible, or to V+ for CMOS-logic level inputs. The
Typical Operating Characteristics graphs show typical
on-resistance with ±15V, ±10V, and ±5V supplies.
(Switching times increase by a factor of two or more for
operation at ±5V.)
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
mum ratings because stresses beyond the listed rat-
ings may cause permanent damage to the devices.
Always sequence V+ on first, followed by V
logic inputs. If power-supply sequencing is not possi-
ble, add two small, external signal diodes in series with
supply pins for overvoltage protection (Figure 1).
6
__________Applications Information
DIP/SO/TSSOP
_______________________________________________________________________________________
2, 15, 10, 7
3, 14, 11, 6
1, 16, 9, 8
12
13
—
4
5
L
must be connected to +5V to be TTL com-
Operation with Supply Voltages
PIN
15, 14, 7, 6
16, 13, 8, 5
1, 12, 9, 4
Overvoltage Protection
QFN
10
11
—
2
3
Other Than 15V
IN1–IN4
D1–D4
NAME
S1–S4
GND
V+
V
EP
V-
L
L
, V-, and
Input
Analog Switch Drain Terminal
Analog Switch Source Terminal
Negative-Supply Voltage Input
Ground
Logic Supply Voltage
Positive-Supply Voltage Input—Connected to Substrate
Exposed Paddle (QFN Only). Connect EP to V+.
Adding diodes reduces the analog signal range to 1V
below V+ and 1V below V-, without affecting low switch
resistance and low leakage characteristics. Device
operation is unchanged, and the difference between
V+ and V- should not exceed +44V.
Figure 1. Overvoltage Protection Using External Blocking Diodes
V g
D
FUNCTION
V+
V-
V+
V-
Pin Description
S