AD8346
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1
2
3
4
5
6
7
8
16
QBBP
IBBP
IBBN
15 QBBN
14 COM4
COM1
COM1
LOIN
LOIP
AD8346 13
COM4
VPS2
TOP VIEW
(Not to Scale)
12
11 VOUT
10
9
VPS1
ENBL
COM3
COM2
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Equivalent
Circuit
Pin No.
Mnemonic
Description
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. Circuit A
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.
3
4
5
COM1
COM1
LOIN
Ground Pin for the LO phase splitter and LO buffers.
Ground Pin for the LO phase splitter and LO buffers.
LO Negative Input Pin. Internal dc bias (approximately VPS1 to 800 mV) is supplied. This
pin must be ac coupled.
Circuit B
6
7
LOIP
VPS1
LO Positive Input Pin. Internal dc bias (approximately VPS1 to 800 mV) is supplied. This pin Circuit B
must be ac-coupled.
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
9
10
11
12
ENBL
COM2
COM3
VOUT
VPS2
Enable Pin. A high level enables the device; a low level puts the device in sleep mode.
Ground Pin for the input stage of output amplifier.
Ground Pin for the output stage of output amplifier.
50 Ω DC-Coupled RF Output. User must provide ac coupling on this pin.
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.
Circuit C
Circuit D
13
14
15
COM4
COM4
QBBN
Ground Pin for baseband input voltage to current converters and mixer core.
Ground Pin for baseband input voltage to current converters and mixer core.
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.
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
Circuit A
16
QBBP
Rev. A | Page 5 of 20
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