Datasheet

MAX5420/MAX5421
Digitally Programmable Precision
Voltage Divider for PGAs
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= +5V ±5%, V
SS
= -5V ±5% or V
SS
= GND, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
to GND..............................................................-0.3V to +6V
V
SS
to GND...............................................................+0.3V to -6V
D0, D1 to GND ...........................................-0.3V to (V
DD
+ 0.3V)
H, L, W, MATCH_ to GND ................(V
SS
- 0.3V) to (V
DD
+ 0.3V)
Input and Output Latchup Immunity.................................±50mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C) .............333mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX542_A ±0.025
MAX542_B ±0.09
Divider Ratio Accuracy
MAX542_C ±0.5
%
H-to-L Resistance R
HL
(Figure 1) 15 kΩ
Input Resistance at H R
H
15
kΩ
V
SS
= -5V 300
Ratio = 1
V
SS
= 0 500
Ω
Input Resistance at W R
W
Ratio = 2, 4, 8 8 kΩ
Capacitance at H, L, W,
MATCH_H, MATCH_L
C
ANALOG
5pF
V
SS
= -5V 300
Ratio = 1
V
SS
= 0 500
Ω
Matching Resistor MAX5421
Ratio = 2, 4, 8 8 kΩ
DYNAMIC PERFORMANCE
Switching Time t
S
V
D D
= + 5V , V
S S
= - 5V , d i g i tal i np ut 0 to + 3V ,
V
W
settl es to 0.02% of fi nal val ue w i th 2p F
cap aci ti ve l oad . C i r cui t of Fi g ur e 2.
0.5 µs
DIGITAL INPUTS
Input High Voltage V
IH
2.4
Input Low Voltage V
IL
0.8
V
Input Leakage Current D1, D0 = V
DD
or GND ±1 µA
Input Capacitance 5pF