AD9707BCPZ Analog Devices Inc, AD9707BCPZ Datasheet - Page 41

• Manufacturer Part Number: AD9707BCPZ
• Description: IC DAC TX 14BIT 175MSPS 32-LFCSP
• Manufacturer: Analog Devices Inc
• Series: TxDAC®r

Specifications of AD9707BCPZ

• Data Interface: Serial
• Settling Time: 11ns
• Number Of Bits: 14
• Number Of Converters: 1
• Voltage Supply Source: Analog and Digital
• Power Dissipation (max): 50mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-LFCSP
• Resolution (bits): 14bit
• Sampling Rate: 175MSPS
• Input Channel Type: Parallel
• Supply Voltage Range - Analogue: 1.7V To 3.6V
• Supply Voltage Range - Digital: 1.7V To 3.6V
• Supply: RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AD9707-EBZ - BOARD EVAL FOR AD9707
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DIFFERENTIAL BUFFERED OUTPUT
USING AN OP AMP
A dual op amp (see the circuit shown in Figure 91) can be used
in a differential version of the single-ended buffer shown in
Figure 90. The same R-C network is used to form a 1-pole
differential, low-pass filter to isolate the op amp inputs from the
high frequency images produced by the DAC outputs. The feed-
back resistors, R
formula
The maximum and minimum voltages out of the amplifier are,
respectively,
The common-mode voltage of the output is determined by the
formula
V
V
V
V
OUT
MIN
MAX
CM
= V
= R
=
=
V
V
FB
MAX
MAX
REF
× I
FB
− V
, determine the peak signal swing by the
−
×
FS
V
⎛
⎜
⎜
⎝
1
OUT
OUT
2
+
R
R
FB
B
⎞
⎟
⎟
⎠
Rev. A | Page 41 of 52
AD9704/AD9705
AD9706/AD9707
AD9704/AD9705/AD9706/AD9707
IOUTA
IOUTB
REFIO
OTCM
Figure 91. Single-Supply Differential Buffer
21
19
23
20
R
S
R
S
R
C
R
B
B
ADA4841-2
ADA4841-2
–
+
+
–
R
R
C
C
FB
FB
F
F
V
OUT