參數(shù)資料
型號(hào)： AD8349AREZ-RL7
廠商： ANALOG DEVICES INC
元件分類： 調(diào)制器/解調(diào)器
英文描述： 700 MHz - 2700 MHz RF/MICROWAVE QPSK MODULATOR
封裝： MO-153ABT, TSSOP-16
文件頁(yè)數(shù)： 25/28頁(yè)
文件大?。?/td> 729K
代理商： AD8349AREZ-RL7
AD8349
Rev. A | Page 6 of 28
PIN CONFIGURATION AND FUNCTIONAL DESCRIPTIONS
AD8349
TOP VIEW
(Not to Scale)
IBBP
1
IBBN
2
COM1
3
COM1
4
LOIN
5
QBBP
QBBN
COM3
VPS2
15
14
13
12
LOIP
6
VPS1
7
ENOP
8
VOUT
COM3
COM2
11
10
9
16
03570-0-002
Figure 2.
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
Description
Equivalent
Circuit
1, 2,
15, 16
IBBP, IBBN,
QBBN, QBBP
Differential In-Phase and Quadrature Baseband Inputs. These high impedance inputs must be
dc-biased to approximately 400 mV dc, and must be driven from a low impedance source.
Nominal characterized ac signal swing is 600 mV p-p on each pin (100 mV to 700 mV). This
results in a differential drive of 1.2 V p-p with a 400 mV dc bias. These inputs are not self-biased
and must be externally biased.
Circuit A
3, 4
COM1
Common Pin for LO Phase Splitter and LO Buffers. COM1, COM2, and COM3 should all be
connected to a ground plane via a low impedance path.
5, 6
LOIN, LOIP
Differential Local Oscillator Inputs. Internally dc-biased to approximately 1.8 V when VS = 5.0 V.
Pins must be ac-coupled. Single-ended drive is possible with degradation in performance.
Circuit B
7
VPS1
Positive Supply Voltage (4.75 V to 5.5 V) for the LO Bias-Cell and Buffer. VPS1 and VPS2 should
be connected to the same supply. To ensure adequate external bypassing, connect 0.1 F and
100 pF capacitors between VPS1 and ground.
8
ENOP
Output Enable. This pin can be used to enable or disable the RF output. Connect to high logic
level for normal operation. Connect to low logic level to disable output.
Circuit C
9
COM2
Common Pin for the Output Amplifier. COM1, COM2, and COM3 should all be connected to a
ground plane via a low impedance path.
10, 13,
14
COM3
Common Pin for Input V-to-I Converters and Mixer Cores. COM1, COM2, and COM3 should all
be connected to a ground plane via a low impedance path.
11
VOUT
Device Output. Single-ended, 50 internally biased RF output. Pin must be ac-coupled to the
load.
Circuit D
12
VPS2
Positive Supply Voltage (4.75 V to 5.5 V) for the Baseband Input V-to-I Converters, Mixer Core,
Band Gap Reference, and Output Amplifer. VPS1 and VPS2 should be connected to the same
supply. To ensure adequate external bypassing, connect 0.1 F and 100 pF capacitors between
VPS2 and ground.
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