AD6458 datasheet(2/12 Pages) AD

2 / 12 page

–2–

REV. 0

AD6458–SPECIFICATIONS(@ T

A = +25 C, VP = 3.0 V, GREF = 1.2 V, unless otherwise noted)

Parameter

Conditions

Min

Typ

Max

Units

MIXER

Maximum RF and LO Frequency

400

MHz

AGC Conversion Gain Variation

0.2 V < VG < 2.25 V, ZS = 50 Ω, ZLOAD = 330 Ω

–8.5 to +9.5

Input RF Signal Range

–95

–15

dBm

Input 1 dB Compression Point

@ VG = 0.2 V, ZS = 50 Ω, ZLOAD = 330 Ω

–11

dBm

Input Third-Order Intercept

@ VG = 0.2 V, ZS = 50 Ω, ZLOAD = 330 Ω

–2

dBm

SSB Noise Figure

@ ZS =1 kΩ, FRF = 83 MHz, FLO = 96 MHz at –16 dBm

Mixer Output Bandwidth at MXOP

@ –3 dB, ZLOAD = 330 Ω

MHz

IF AMPLIFIERS

AGC Gain Variation

0.2 V < VG < 2.25 V

–9 to +48

Input Referred Noise

AC Short Circuit Input

nV/Hz

Input Resistance

@ VG = 0.2 V

Ω

Bandwidth

@ –3 dB

MHz

I AND Q DEMODULATORS

Demodulation Gain

Output Voltage Range

IRXP, IRXN, QRXP, QRXN

0.3

VP – 0.2

Output Voltage Common-Mode Level

(Not Power Supply Dependant)

1.5

Output Offset Voltage

Differential

–150

+150

Output Offset Voltage Variation

Differential, over Gain and Temperature Range

1mV

Output Offset Voltage Variation

Differential, for 0.5 V < VG < 2.4 V and

–25

°C < T

A < +85°C (See Note 2)

0.5

Error in Quadrature

IF = 13 MHz

1.5

3.7

Degree

Amplitude Match

0.25

I/Q Output Bandwidth

CLOAD = 10 pF

MHz

Output Resistance

Each Pin

4.7

Ω

GAIN CONTROL

Total Gain Control Range

Mixer + IF + Demod, 0.2 V < VG < 2.25 V

Control Voltage Range at GAIN

0.2

2.4

Gain Scaling

mV/dB

Gain Law Conformance

±0.5

Bias Current at GREF

0.5

µA

Input Resistance at GAIN

Ω

PLL

Frequency Range

MHz

Phase Noise

0.5

Degree rms

Acquisition Time

IF = 13 MHz, Using Ceramic Filter

µs

Input Drive Level (FREF)

100

VPOS

POWER-DOWN INTERFACE

Logical Threshold

Power-Up On Logical High

1.5

Input Current for Logical High

µA

Turn On Response Time

To Fully Meet Specifications

150

µs

Stand By Current

(See Note 3)

µA

POWER SUPPLY

Supply Range

3.0

3.3

3.6

Worst Case Supply Current

@ VGAIN = 0.2 V, TA = +85°C, VP = 3.6 V

16.5

Supply Current

@ VGAIN = 1.2 V

OPERATING TEMPERATURE

TMIN to TMAX

–40 to +85

°C

NOTES

1Including IF noise and using 13 MHz ceramic filter, at V

GAIN = 0.2 V.

2Histograms of Demodulator Offset Voltage Variation in Gain and Temperature can be found in Figures 23 to 27.

3Max value represent the value at six times the standard deviation, in the worst case condition (T

A = +85°C). The value at three times the standard deviation is 5 µA.

4Max value represent the value at six times the standard deviation. The value at three times the standard variation is 19 mA.

Specifications subject to change without notice.

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