Datasheet

Data Sheet AD8432
Rev. C | Page 3 of 32
SPECIFICATIONS
V
S
= 5 V, T
A
= 25°C, R
S
= R
IN
= 50 Ω, R
FB
=150 Ω, C
SH
= 47 pF, R
SH
= 15 Ω, R
L
= 500 Ω (per SE output), C
L
= 5 pF (per SE output),
G = 12.04 dB (single-ended input to differential output), f = 1 MHz, unless otherwise specified.
Table 1.
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
Gain Range Input to differential output (selectable gain) 12.04 24.08 dB
Input to single output (selectable gain) 6.02 18.06 dB
Gain Error 0.1 1 dB
−3 dB Small Signal Bandwidth R
IN
unterminated, R
FB
= ∞, C
SH
= 0 pF, R
SH
= 0 Ω
G = 12.04 dB
200
MHz
G = 18.06 dB 90 MHz
G = 21.58 dB 50 MHz
G = 24.08 dB 32 MHz
−3 dB Large Signal Bandwidth V
OUT
= 2 V p-p 42 MHz
Slew Rate (Rising Edge) V
OUT
= 2 V p-p, f = 10 MHz 295 V/µs
Slew Rate (Falling Edge) V
OUT
= 2 V p-p, f = 10 MHz 170 V/µs
Overdrive Recovery Time 10 ns
DISTORTION/NOISE PERFORMANCE
Input Voltage Noise
R
FB
= ∞
0.85
nV/√Hz
Input Current Noise R
FB
= ∞ 2.0 pA/√Hz
Noise Figure
Unterminated R
S
= 50 Ω, R
FB
= ∞ 2.8 dB
Active Termination R
S
= R
IN
= 50 Ω, R
FB
= 150 Ω 4.8 dB
R
S
= 50 Ω, R
FB
= 226 Ω, R
IN
= 75 Ω
4.2
dB
R
S
= 50 Ω, R
FB
= 301 Ω, R
IN
= 100 Ω 3.2 dB
R
S
= 50 Ω, R
FB
= 619 Ω, R
IN
= 200 Ω 2.1 dB
R
S
= 50 Ω, R
FB
= 3.57 kΩ, R
IN
= 1 kΩ 2.3 dB
Output Referred Noise G = 12.04 dB, R
FB
= ∞ 3.4 nV/√Hz
G = 18.06 dB, R
FB
= ∞ 6.8 nV/√Hz
G = 21.58 dB, R
FB
= ∞ 10.2 nV/√Hz
G = 24.08 dB, R
FB
= ∞ 13.6 nV/√Hz
Harmonic Distortion
1 MHz (V
OUT
= 1 V p-p) HD2 −67 dBc
HD2, R
S
= 50 Ω, R
IN
unterminated −74 dBc
HD3 −103 dBc
HD3, R
S
= 50 Ω, R
IN
unterminated −106 dBc
1 MHz (V
OUT
= 2 V p-p) HD2 −65 dBc
HD2, R
S
= 50 Ω, R
IN
unterminated −72 dBc
HD3 −103 dBc
HD3, R
S
= 50 Ω, R
IN
unterminated −92 dBc
10 MHz (V
OUT
= 1 V p-p)
HD2
−66
dBc
HD2, R
S
= 50 Ω, R
IN
unterminated −62 dBc
HD3 −78 dBc
HD3, R
S
= 50 Ω, R
IN
unterminated −73 dBc
10 MHz (V
OUT
= 2 V p-p) HD2 −60 dBc
HD2, R
S
= 50 Ω, R
IN
unterminated −56 dBc
HD3 −72 dBc
HD3, R
S
= 50 Ω, R
IN
unterminated −65 dBc