ADA4320-1

Rev. 0 | Page 3 of 16

SPECIFICATIONS

output of Coilcraft PWB-4-BL transformer, unless otherwise noted.

Table 1.

Parameter

Conditions

Min

Typ

Max

Unit

INPUT CHARACTERISTICS

Input Resistance

Balanced (differential) input

640

Ω

Unbalanced (single-ended) input

320

Ω

Input Capacitance

2.0

pF

GAIN CONTROL

Current Level 3

Gain Range

57.5

59

60

dB

Maximum Gain

Gain Code 60

30.5

32

dB

Minimum Gain

Gain Code 01

−27

−25.5

dB

Output Step Size

0.6

1.0

1.4

dB/LSB

OUTPUT CHARACTERISTICS

Gain Flatness

Referenced to 10 MHz

At Maximum Gain

f = 42 MHz, Gain Code 60, Current Level 3

−0.3

dB

f = 65 MHz, Gain Code 60, Current Level 3

−0.7

dB

f = 85 MHz, Gain Code 60, Current Level 3

−1.1

dB

At Minimum Gain

f = 42 MHz, Gain Code 01, Current Level 0

−0.4

dB

f = 65 MHz, Gain Code 01, Current Level 0

−0.8

dB

f = 85 MHz, Gain Code 01, Current Level 0

−1.8

dB

f = 10 MHz, Gain Code 60, Current Level 3, output referred

70

dB mV

Output Noise in 160 kHz Bandwidth

f = 10 MHz, 294 Ω resistor across VIN+ and VIN− pins

At Maximum Gain

Gain Code 60, Current Level 3, TXEN = high (1)

−19

−20

dB mV

Gain Code 60, Current Level 0, TXEN = high (1)

−20

−21

dB mV

At Minimum Gain

Gain Code 01, Current Level 3, TXEN = high (1)

−59

−60

dB mV

Gain Code 01, Current Level 0, TXEN = high (1)

−60

−61

dB mV

Transmit Disabled

TXEN = low (0)

−68

−70

dB mV

Output Impedance (Measured at

Transformer Output)

TXEN = high (1) or TXEN = low (0) or SLEEP = low (0)

75

Ω

Output Return Loss (Measured at

Transformer Output)

f = 85 MHz

SLEEP = high (1), TXEN = high (1)

12

dB

SLEEP = high (1), TXEN = low (0)

11

dB

SLEEP = low (0)

10

dB

OVERALL PERFORMANCE

Adjacent Channel Power Ratio (ACPR)

Single QPSK Channel

f = 5 MHz to 85 MHz, output level = 61 dB mV,

Gain Code 60, Current Level 3, channel width = 6.4 MHz,

adjacent channel width = 6.4 MHz

−66

dBc

4x QAM64 Channels

f = 5 MHz to 85 MHz, output level = 53 dB mV/channel,

Gain Code 60, Current Level 3, channel width = 1.6 MHz,

adjacent channel width = 1.6 MHz

−63

dBc

Output Third-Order Intercept Point (OIP3)

93

dB mV

87

dB mV

Input-to-Output Isolation

f = 85 MHz, Gain Code 60, TXEN = Low (0)

107

dB