13

Preliminary Information

SL1925

Electrical Characteristics (continued)

These characteristics are guaranteed by either production test or design. They apply within the specified

ambient temperature and supply voltage unless otherwise stated.

T

Characteristic

Value

Min

Typ

Max

Units

Conditions

Pin

Converter output impedance

1,14

25

50

Ω

0.1 to 30MHz. See Figure 12

Converter output limiting

1,14

0.5

1.2

Vp-p

No Load

Converter bandwidth 1dB

40

MHz

No Load

Converter output roll off

1,14

6

dB/oct

Oscillator vcos operating range

6,7

1900

3000

MHz

Giving LO = 950MHz to1500MHz

Tanks/Tanksb

Application as in Figure 4.

Oscillator vcov operating range,

9,10

1450

2150

MHz

Application as in Figure 4.

Tankv/Tankvb

Local oscillator SSB phase noise

6,7

-80

-76

dBc/Hz

@ 10kHz offset PLL loop BW < 1kHz,

application as Figure 4. Measured at

baseband outputs of 10MHz

LO leakage to converter input

21,22

59

69

dB

µV

LOsel low voltage

24

0.6

V

Oscillator vcos enabled

LOsel high voltage

24

Vcc-0.7

V

Oscillator vcov enabled

LOsel low current

24

-50

µA

LOsel high current

24

200

µA

Prescaler output drive

3,4

88

dB

µV

Single ended into 50

Ω. Synthesiser

should be driven differentially

Prescaler output impedance

3,4

50

Ω

Prescaler output return loss

3,4

8

dB

BASEBAND AMPLIFIERS

Baseband amplifier input

16,27

0.1 -30MHz bandwidth

impedance

Resistance

10

k

Ω

Capacitance

5

pF

Baseband amplifier input referred

16,27

94

97

dB

µV

See Note 7

IP3

Baseband amplifier input referred

16,27

99

111

dB

µV

See Note 7

IP2

Baseband amplifier input referred

16,27

-40

-34

dBc

See Note 7

IM3

Baseband amplifier input referred

16,27

-34

-22

dBc

See Note 7

IM2

Baseband amplifier input referred

16,27

84

dB

µV

Terminated voltage gain into load as in

1dB compression (P1dB)

Figure 3.

Baseband amplifier gain

16,18

30

dB

Terminated voltage gain into load as in

27,25

Figure 3