MAX5183BEEI+ Maxim Integrated Products, MAX5183BEEI+ Datasheet - Page 12

• 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

The MAX5180/MAX5183’s low-distortion supports ana-
log reconstruction of in-phase (I) and quadrature (Q)
carrier components typically used in QAM (quadrature
amplitude modulation) architectures where I and Q
data are interleaved on a common data bus. A QAM
signal is a carrier frequency that is both amplitude and
phase modulated, and is created by summing two
independently modulated carriers of identical frequency
but different phase (90° phase difference).
In a typical QAM application
occurs in the digital domain and the MAX5180/
MAX5183’s dual DACs may be used to reconstruct the
analog I and Q components.
Dual, 10-Bit, 40MHz, Current/Voltage
Simultaneous-Output DACs
Figure 5. Differential to Single-Ended Conversion Using a Low-Distortion Amplifier
12
I/Q Reconstruction in a QAM Application
______________________________________________________________________________________
3V
3V
10µF
R
SET
D0–D9
**
0.1µF
0.1µF
(Figure
AV
CLK
REFO
REFR
DD
DGND
MAX5180
MAX5183
6), the modulation
10µF
REN
DV
DD
0.1µF
AGND
OUT1N
OUT2N
OUT1P
OUT2P
CREF1
CREF2
0.1µF
AV
**MAX5180 ONLY
DD
*400Ω RESISTORS INTERNAL TO MAX5183 ONLY.
400Ω*
400Ω*
400Ω*
400Ω*
AV
The I/Q reconstruction system is completed by a quad-
rature modulator that combines the reconstructed I and
Q components with in-phase and quadrature phase
carrier frequencies, then sums both outputs to provide
the QAM signal.
Grounding and power-supply decoupling strongly influ-
ence the MAX5180/MAX5183’s performance. Unwanted
digital crosstalk may couple through the input, refer-
ence, power-supply, and ground connections, which
may affect dynamic specifications like signal-to-noise
ratio or spurious-free dynamic range. In addition, elec-
tromagnetic interference (EMI) can either couple into or
be generated by the MAX5180/MAX5183. Therefore,
DD
0.1µF
Grounding and Power-Supply Decoupling
402Ω
402Ω
402Ω
402Ω
402Ω
402Ω
402Ω
402Ω
-5V
5V
5V
-5V
MAX4108
MAX4108
OUTPUT1
OUTPUT2