AD6432AST datasheet(2/20 Pages) AD

2 / 20 page

–2–

REV. 0

AD6432–SPECIFICATIONS (T

A = +25 C, VP = 3.0 V, GREF = 1.25 V unless otherwise noted)

Parameter

Conditions

Min

Typ

Max

Units

RX RF MIXER

RF Input Frequency

350

MHz

AGC Conversion Gain Variation

ZIN = 150 Ω: 0.2 V < VGAIN < 2.4 V

–3 to +15

Input 1 dB Compression Point

At VGAIN = 2.4 V, ZIN = 150

Ω

–13

dBm

Input Third-Order Intercept

At VGAIN = 0.2 V, RFIN = –25 dBm

dBm

SSB Noise Figure

At ZIN = 150 Ω, FRF = 246 MHz,

FLO = 272 MHz, VGAIN = 0.2 V

RX IF AMPLIFIER

AGC Gain Variation

0.2 V < VGAIN < 2.4 V

–14 to 48

Input Resistance

at VGAIN = 0.2 V

Ω

Operating Frequency Range

MHz

GAIN CONTROL

Total Gain Control Range

Mixer+IF+Demod, 0.2 V < VGAIN < 2.4 V

Control Voltage Range at GAIN

0.2

2.4

Gain Scaling

27.5

mV/dB

Gain Law Conformance

±0.1

Bias Current at GREF

–0.5

µA

Input Resistance at Gain

Ω

INTEGRATED IF FILTER

BPF Center Frequency

fREF = 13 MHz

IFS0 = 1

“0” = Connect to Ground, “1” = Connect to VP

MHz

IFS0 = 0

“0” = Connect to Ground, “1” = Connect to VP

MHz

BPF –3 dB BW

fREF = 13 MHz

IFS0 = 1

“0” = Connect to Ground, “1” = Connect to VP

MHz

IFS0 = 0

“0” = Connect to Ground, “1” = Connect to VP

MHz

I AND Q DEMODULATOR

Demodulation Gain

Output Voltage Range

Differential

0.3

VPOS – 0.2

Output Voltage Common-Mode Level Not Power Supply Independent

1.5

Output Offset Voltage

Differential, VGAIN = GREF

–150

+150

Error in Quadrature

Differential from I to Q, IF = 13 MHz

3.5

Degrees

Amplitude Match

0.25

I/Q Output BW

CLOAD = 10 pF

MHz

Output Resistance

Each Pin

4.7

Ω

QUADRATURE IF PLL

Operating Frequency Range

MHz

Reference Frequency Voltage Level

200

mV p-p

Reference Frequency Range

MHz

Acquisition Time

Using 1 k

Ω, 1 nF Loop Filter

µs

TRANSMIT MODULATOR

Carrier Output Frequency

300

MHz

Output Power

RLOAD = 150

Ω, Power at Final 50 Ω,

FIF = 272 MHz

–17.5

dBm

Input 1 dB Compression Point

RLOAD = 150

Ω (Differential)

dBm

I/Q Input Signal Amplitude

Differential

2.056

V p-p

I/Q Input Signal Required DC Bias

1.2

I/Q Input BW

MHz

I/Q Input Resistance

100

Ω

I/Q Phase Balance

With LOs 2nd Harmonic 30 dBc

Bellow Fundamental

±1.5

Degrees

I/Q Amplitude Balance

With LOs 2nd Harmonic 30 dBc

Bellow Fundamental

±0.1

Output Harmonic Content

RLOAD = 150

Ω

–45 (3rd)

dBc

–65 (5th)

dBc

Carrier Feedthrough

FCARRIER = 272 MHz

–33

dBc

Sideband Suppression

I and Q Inputs Driven In Quadrature

–37

dBc

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