19-1581; Rev 0; 12/99
Dual, 8-Bit, 40MHz, Current/Voltage,
Simultaneous-Output DACs
General Description
Features
The MAX5186 contains two 8-bit, simultaneous-update,
current-output digital-to-analog converters (DACs)
designed for superior performance in communications
systems requiring analog signal reconstruction with low
distortion and low-power operation. The MAX5189 pro-
vides equal specifications, with on-chip precision resis-
tors for voltage output operation. The MAX5186/
MAX5189 are designed for a 10pVs glitch operation to
minimize unwanted spurious signal components at the
output. An on-board +1.2V bandgap circuit provides a
well-regulated, low-noise reference that can be dis-
abled for external reference operation.
ꢀ +2.7V to +3.3V Single-Supply Operation
ꢀ Wide Spurious-Free Dynamic Range: 70dB
at f = 2.2MHz
OUT
ꢀ Fully Differential Outputs for Each DAC
ꢀ
ꢀ
0.ꢀ5 FSR ꢁain Mismatch
0.ꢂꢀꢃ Phase Mismatch
ꢀ Low-Current Standby or Full Shutdown Modes
ꢀ Internal +ꢂ.2V, Low-Noise Bandgap Reference
ꢀ Small 28-Pin QSOP Package
The MAX5186/MAX5189 are designed to provide a high
level of signal integrity for the least amount of power dissi-
pation. Both DACs operate from a single supply voltage
of +2.7V to +3.3V. Additionally, these DACs have three
modes of operation: normal, low-power standby, and
complete shutdown, which provides the lowest possible
power dissipation with a 1µA (max) shutdown current. A
fast wake-up time (0.5µs) from standby mode to full DAC
operation allows power conservation by activating the
DACs only when required.
Ordering Information
PART
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 QSOP
MAX5186BEEI
MAX5189BEEI
28 QSOP
The MAX5186/MAX5189 are packaged in a 28-pin
QSOP and are specified for the extended (-40°C to
+85°C) temperature range. For higher resolution, dual
10-bit versions, refer to the MAX5180/MAX5183 data
sheet.
Pin Configuration
TOP VIEW
Applications
Signal Reconstruction of I and Q
Transmit Signals
CREF1
OUT1P
OUT1N
AGND
1
2
3
4
5
6
7
8
9
28 CREF2
27 OUT2P
26 OUT2N
25 REFO
24 REFR
Digital Signal Processing
Arbitrary Waveform Generation (AWG)
Imaging Applications
AV
DD
MAX5186
MAX5189
DACEN
PD
23 DGND
22 DV
21 D7
20 D6
19 D5
18 D4
17 D3
16 D2
15 D1
DD
CS
CLK
N.C. 10
REN 11
DGND 12
DGND 13
D0 14
QSOP
________________________________________________________________ Maxim Integrated Products
ꢂ
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For small orders, phone 1-800-835-8769.