AD8346
Rev. A | Page 5 of 20
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
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15
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9
1
2
3
4
5
6
7
8
IBBP QBBP
AD8346
TOP VIEW
(Not to Scale)
IBBN QBBN
COM1 COM4
COM1 COM4
LOIN VPS2
LOIP VOUT
VPS1 COM3
ENBL COM2
05335-002
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No. Mnemonic Description
Equivalent
Circuit
1 IBBP
I Channel Baseband Positive Input Pin. Input should be dc-biased to approximately 1.2 V.
Nominal characterized ac swing is 1 V p-p (0.7 V to 1.7 V). This makes the differential input
2 V p-p when IBBN is 180 degrees out of phase from IBBP.
Circuit A
2 IBBN
I Channel Baseband Negative Input Pin. Input should be dc-biased to approximately 1.2 V.
Nominal characterized ac swing is 1 V p-p (0.7 V to 1.7 V). This makes the differential input
2 V p-p when IBBN is 180 degrees out of phase from IBBP.
Circuit A
3 COM1 Ground Pin for the LO phase splitter and LO buffers.
4 COM1 Ground Pin for the LO phase splitter and LO buffers.
5 LOIN
LO Negative Input Pin. Internal dc bias (approximately VPS1 to 800 mV) is supplied. This
pin must be ac coupled.
Circuit B
6 LOIP
LO Positive Input Pin. Internal dc bias (approximately VPS1 to 800 mV) is supplied. This pin
must be ac-coupled.
Circuit B
7 VPS1
Power Supply Pin for the bias cell and LO buffers. This pin should be decoupled using
local 100 pF and 0.01 μF capacitors.
8 ENBL Enable Pin. A high level enables the device; a low level puts the device in sleep mode. Circuit C
9 COM2 Ground Pin for the input stage of output amplifier.
10 COM3 Ground Pin for the output stage of output amplifier.
11 VOUT 50 Ω DC-Coupled RF Output. User must provide ac coupling on this pin. Circuit D
12 VPS2
Power Supply Pin for baseband input voltage to current converters and mixer core. This
pin should be decoupled using local 100 pF and 0.01 μF capacitors.
13 COM4 Ground Pin for baseband input voltage to current converters and mixer core.
14 COM4 Ground Pin for baseband input voltage to current converters and mixer core.
15 QBBN
Q Channel Baseband Negative Input. Input should be dc biased to approximately 1.2 V.
Nominal characterized ac swing is 1 V p-p. This makes the differential input 2 V p-p when
QBBN is 180° out of phase from QBBP.
Circuit A
16 QBBP
Q Channel Baseband Positive Input. Input should be dc-biased to approximately 1.2 V.
Nominal characterized ac swing is 1 V p-p. This makes the differential input 2 V p-p when
QBBN is 180° out of phase from QBBP.
Circuit A