MAX5385EUT+T Maxim Integrated Products, MAX5385EUT+T Datasheet - Page 8

• Manufacturer Part Number: MAX5385EUT+T
• Description: IC DAC 8BIT 3WIRE SER SOT23-6
• Manufacturer: Maxim Integrated Products

Specifications of MAX5385EUT+T

• Settling Time: 20µs
• Number Of Bits: 8
• Data Interface: Serial
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Number Of Dac Outputs: 1
• Resolution: 8 bit
• Interface Type: Serial (SPI)
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Supply Current: 230 uA
• Voltage Reference: Internal
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power Dissipation (max): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MAX5385EUT+T

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire
Serial Interface in SOT23
Figure 1. Functional Diagram
Figure 2. Current-Steering DAC Topology
Table 1. Unipolar Code Output Voltage
8
DAC CODE
1111 1111
1000 0000
0000 0001
0000 0000
[D11–D4]
SW1
_______________________________________________________________________________________
SW2
SCLK
DIN
CS
MAX5383
(255/256)
7.8mV
2V
SW255
1V
0
×
OUTPUT VOLTAGE
CONTROL LOGIC
REF
MAX5384
(255/256)
15.6mV
V
REF
4V
2V
0
×
0.9
0.9
0.9
MAX5385
(255/256)
×
×
V
×
V
DD
0
V
DD
DD ×
SERIAL INPUT REGISTER
OUT
/ 256
CURRENT-STEERING
/ 2
DATA LATCH
DAC
255
8
combination of resistive loads >10kΩ and capacitive
loads <50pF.
The MAX5383/MAX5384/MAX5385 have a power-on
reset circuit to set the DAC’s output to 0 when V
first applied or when V
ensures that unwanted DAC output voltages will not
occur immediately following a system startup, such as
after a loss of power. The output glitch on startup is typ-
ically less than 50mV.
The MAX5383/MAX5384/MAX5385 include three soft-
ware-controlled shutdown modes that reduce the supply
current to <1µA. All internal circuitry is disabled, and a
known impedance is placed from OUT to GND to
ensure 0V while in shutdown. Table 2 details the three
shutdown modes of operation.
The MAX5383/MAX5384/MAX5385s’ digital interface is
a standard 3-wire connection compatible with
SPI/QSPI/MICROWIRE interfaces. The chip-select input
(CS) frames the serial data loading at the data-input pin
(DIN). Immediately following CS’s high-to-low transition,
the data is shifted synchronously and latched into the
input register on the rising edge of the serial clock input
(SCLK). After 16 bits have been loaded into the serial
GND
V
MAX5383
MAX5384
MAX5385
DD
DD
3-Wire Serial Interface
dips below 1.7V (typ). This
Digital Section
Power-On Reset
Shutdown Mode
OUT
DD
is