MAX5429EUA+ Maxim Integrated Products, MAX5429EUA+ Datasheet - Page 7
![IC DGTL POT 1TIME PROGR 8-UMAX](/photos/1/39/13936/406-8-msop_sml.jpg)
MAX5429EUA+
Manufacturer Part Number
MAX5429EUA+
Description
IC DGTL POT 1TIME PROGR 8-UMAX
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5428EUA.pdf
(10 pages)
Specifications of MAX5429EUA+
Taps
32
Resistance (ohms)
10K
Number Of Circuits
1
Temperature Coefficient
35 ppm/°C Typical
Memory Type
Non-Volatile
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Resistance In Ohms
10K
Number Of Pots
Single
Taps Per Pot
32
Resistance
10 KOhms
Wiper Memory
Non Volatile
Digital Interface
Up/Down
Operating Supply Voltage
2.7 V to 5.5 V
Supply Current
1.5 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Description/function
10k One-Time-Programmable Digital Potentiometer
Mounting Style
SMD/SMT
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Tolerance
25 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Figure 4. One-Time Program Mode Serial Interface Timing Diagram
It is recommended that the user either use six CS puls-
es (convert to a fixed voltage-divider) or five pulses
(program the initial power-up value of the device, but
still be able to adjust the wiper). If the device is pro-
grammed with five pulses and later it is desired to dis-
able the interface (convert to a fixed voltage-divider),
then care must be taken to ensure that the wiper is in
the same position as it was originally set to (when pro-
grammed with five pulses). The full six programming
pulses must be applied. If the wiper is not in its original
programmed position prior to disabling the interface,
the final locked-out position is correct. Note that once
the six-pulse program occurs, no further programming
is possible.
The V
5mA and have a good transient response. The V
supply should be decoupled with 22µF and have no more
than 250µH of inductance and/or 40
tance between the capacitors and the device (Figure 5).
The device does not require decoupling capacitors near
V
PP
, provided the above guidelines are met.
PP
V
PP
U/D
11V
power supply must be able to source at least
CS
0V
_______________________________________________________________________________________
One-Time Programmable, Linear-Taper
t
PC
t
CH
of parasitic resis-
5 BITS RECORD WIPER POSITION
PP
power
t
CL
Figure 5. V
TRANSISTOR COUNT: 2270
PROCESS: BiCMOS
Digital Potentiometers
V
PP
= 11V
22 F
PP
Power-Supply Connection
L
< 250 H
PARASITIC
TRACE PARASITICS
OPTIONAL LOCKOUT BIT
Chip Information
R
PARASITIC
< 40
t
CP
t
PH
V
PP
MAX5427
MAX5428
MAX5429
7