Table 1. i, And r – Rainbow Electronics MAX5887 User Manual
Page 9
MAX5887
3.3V, 14-Bit, 500Msps High Dynamic
Performance DAC with Differential LVDS Inputs
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9
Analog Outputs (IOUTP, IOUTN)
The MAX5887 outputs two complementary currents
(IOUTP, IOUTN) that can be operated in a single-
ended or differential configuration. A load resistor can
convert these two output currents into complementary
single-ended output voltages. The differential voltage
existing between IOUTP and IOUTN can also be con-
verted to a single-ended voltage using a transformer or
a differential amplifier configuration. If no transformer is
used, the output should have a 50Ω termination to the
analog ground and a 50Ω resistor between the outputs.
Although not recommended for single-ended operation,
because of additional noise pickup from the ground
1.2V
REFERENCE
CURRENT-STEERING
DAC
FUNCTION
SELECTION
BLOCK
AGND
SEL0
DGND
DV
DD
REFIO
FSADJ
CLKN
CLKP
PD
AV
DD
IOUTP
IOUTN
SEGMENT SHUFFLING/LATCH
DECODER
LVDS RECEIVER/INPUT LATCH
14
DIFFERENTIAL DIGITAL INPUT B0 THROUGH B13
MAX5887
Figure 1. Simplified MAX5887 Block Diagram
R
SET
(k
Ω
)
FULL-SCALE CURRENT
I
OUT
(mA)
REFERENCE CURRENT
I
REF
(µA)
CALCULATED
1% EIA STD
OUTPUT VOLTAGE
V
IOUTP/N
* (mV
P-P
)
2
62.5
19.2
19.1
100
5
156.25
7.68
7.5
250
10
312.5
3.84
3.83
500
15
468.75
2.56
2.55
750
20
625
1.92
1.91
1000
Table 1. I
OUT
and R
SET
Selection Matrix Based on a Typical 1.200V Reference Voltage
*Terminated into a 50Ω load.