AD8346

Rev. A | Page 5 of 20

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

16

15

14

13

12

11

10

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

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