Datasheet

Data Sheet AD8335
Rev. B | Page 3 of 28
SPECIFICATIONS
V
S
= 5 V, T
A
= 25°C, R
L
= 500 Ω, f = 5 MHz, C
L
= 10 pF, low gain range (−10 dB to +38 dB), R
FB
= 249 Ω (PrA R
IN
= 50 Ω) and signal
voltage specified differential, per channel performance, dBm (50 Ω), unless otherwise noted.
Table 1.
Parameter Test Conditions/Comments Min Typ Max Unit
PrA CHARACTERISTICS
Gain Single-ended input to differential output 18 dB
Single-ended input to single-ended output 12 dB
Input Voltage Range PrA output limited to 5 V p-p differential 625 mV p-p
Input Resistance R
FB
= 249 Ω 50 Ω
R
FB
= 374 Ω 75 Ω
R
FB
= 499 Ω 100 Ω
R
FB
= ∞, low frequency value into PIPx 14.7 kΩ
Input Capacitance PIPx (Pin 2, Pin 15, Pin 18, Pin 63) 1.5 pF
−3 dB Small Signal Bandwidth With R
FB
= 249 Ω 110 MHz
Input Voltage Noise R
S
= 0 Ω, R
FB
= ∞ 1.15 nV/√Hz
Input Current Noise 2.4 pA/√Hz
Noise Figure
Active Termination Match R
S
= R
IN
= 50 Ω, R
FB
= 249 Ω 7 dB
Unterminated R
S
= 50 Ω, R
FB
= ∞ 4.4 dB
PrA + VGA CHARACTERISTICS
−3 dB Small Signal Bandwidth Unterminated: R
S
= 50 Ω, R
FB
= ∞ 70 MHz
Matched: R
S
= R
IN
= 50 Ω 85 MHz
Slew Rate Low gain, VGN = 3 V, V
OUT
= 2 V p-p 250 V/μs
High gain, VGN = 3 V, V
OUT
= 2 V p-p 350 V/μs
Input Voltage Noise VGNx pins = 3 V, R
S
= 0 Ω, R
FB
= ∞ 1.3 nV/√Hz
Noise Figure VGNx pins = 3 V, f = 1 MHz to 10 MHz
Active Termination Match R
S
= R
IN
= 50 Ω 7 dB
R
S
= R
IN
= 100 Ω 4.5 dB
Unterminated R
S
= 50 Ω, R
FB
= ∞ 5.0 dB
R
S
= 500 Ω, R
FB
= ∞ 1.3 dB
Output Referred Noise Low gain; VGN < 2 V 33 nV/√Hz
High gain; VGN < 2 V 80 nV/√Hz
Peak Output Voltage Differential, R
L
≥ 500 Ω 5 V p-p
Output Resistance f < 1 MHz, VOHx, VOLx pins 1.2 Ω
Common-Mode Level Set to midsupply for PrA and VGA V
S
/2 V
Output Offset Voltage
Differential Between VOHx pins and VOLx pins, full gain range −25 +5 +35 mV
Common-Mode
Between VOHx pins and VCMx pins, and between
VOLx pins and VCMx pins
−20 +0 +20 mV
Harmonic Distortion V
OUT
= 1 V p-p, low gain, VGN = 2 V
HD2 f = 1 MHz −69 dBc
HD3 f = 1 MHz −57 dBc
HD2 f = 10 MHz −57 dBc
HD3 f = 10 MHz −55 dBc
Harmonic Distortion V
OUT
= 1 V p-p, high gain, VGN = 2 V
HD2 f = 1 MHz −58 dBc
HD3 f = 1 MHz −70 dBc
HD2 f = 10 MHz −55 dBc
HD3 f = 10 MHz −55 dBc
Output 1 dB Compression (OP1dB) VGN = 3 V 18 dBm
VGN = 3 V 8 dBV peak