MAX5183BEEI+ Maxim Integrated Products, MAX5183BEEI+ Datasheet - Page 10

• Manufacturer Part Number: MAX5183BEEI+
• Description: IC DAC 10BIT 40MHZ DUAL 28-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5183BEEI+

• Settling Time: 25µs
• Number Of Bits: 10
• Data Interface: Parallel
• Number Of Converters: 2
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QSOP
• Number Of Dac Outputs: 2
• Resolution: 10 bit
• Interface Type: Parallel
• Supply Voltage (max): 3.3 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Power Dissipation: 725 mW
• Minimum Operating Temperature: - 40 C
• Supply Current: 4.2 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power Dissipation (max): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

To disable the MAX5180/MAX5183’s internal reference,
connect REN to AV
reference may now be applied to drive the REFO pin to
set the full-scale output (Figure 3). Choose a reference
capable of supplying at least 150µA to drive the bias
circuit that generates the cascode current for the cur-
rent array. For improved accuracy and drift perfor-
mance, choose a fixed output voltage reference such
as the 1.2V, 25ppm/°C MAX6520 bandgap reference.
To enter the lower power standby mode, connect digital
inputs PD and DACEN to DGND. In standby, both the
reference and the control amplifier are active with the
current array inactive. To exit this condition, DACEN
must be pulled high with PD held at DGND. Both the
Dual, 10-Bit, 40MHz, Current/Voltage
Simultaneous-Output DACs
Table 1. Power-Down Mode Selection
X = Don’t care
10
Figure 4. Timing Diagram
(POWER-DOWN SELECT)
______________________________________________________________________________________
D0–D9
DAC 1
DAC 2
CLK
PD
0
0
1
INPUT SAMPLE
N-1 FOR DAC 1
N-2
N-2
DAC 1 (N-1)
t
DS1
DD
. A temperature-stable, external
INPUT SAMPLE
N FOR DAC 2
UPDATES
DAC 1 AND
DAC 2 TO N-1
t
DAC 2 (N)
(DAC ENABLE)
CH
External Reference
t
DS2
DACEN
X
0
1
Standby Mode
PRELOADS
SAMPLE N
FOR DAC 2
N-1
N-1
INPUT SAMPLE
N FOR DAC 1
t
CL
DAC 1 (N)
t
DH1
UPDATES
DAC 1 AND
DAC 2 TO N
POWER-DOWN MODE
INPUT SAMPLE
N+1 FOR DAC 2
DAC 2 (N+1)
t
DH1
Shutdown
Wake-Up
Standby
MAX5180 and MAX5183 typically require 50µs to wake
up and allow both the outputs and the reference to settle.
For lowest power consumption, the MAX5180/MAX5183
provide a power-down mode in which the reference,
control amplifier, and current array are inactive and the
DAC supply current is reduced to 1µA. To enter this
mode, connect PD to DV
connect PD to DGND and DACEN to DV
lists the power-down mode selection. About 50µs are
required for the parts to leave shutdown mode and set-
tle to their outputs’ values prior to shutdown.
The MAX5180/MAX5183 dual DACs write to their out-
puts simultaneously
N
N
PRELOADS
SAMPLE N+1
FOR DAC 2
INPUT SAMPLE
N+1 FOR DAC 1
DAC 1 (N+1)
UPDATES
DAC 1 AND
DAC 2 TO N+1
INPUT SAMPLE
N+2 FOR DAC 2
DAC 2 (N+2)
MAX5180
MAX5183
MAX5180
MAX5183
Last state prior to standby mode
(Figure
N+1
N+1
t
CLK
DD
INPUT SAMPLE
N+2 FOR DAC 1
OUTPUT STATE
PRELOADS
SAMPLE N+2
FOR DAC 2
DAC 1 (N+2)
. To return to active mode,
4). On the falling edge of
Shutdown Mode
Timing Information
UPDATES
DAC 1 AND
DAC 2 TO N+2
INPUT SAMPLE
N+3 FOR DAC 2
DAC 2 (N+3)
High-Z
High-Z
AGND
AGND
DD
N+2
N+2
. Table 1