LMH6401_16 Datasheet, PDF (6/48 Pages) Texas Instruments – LMH6401 DC to 4.5 GHz, Fully-Differential, Digital Variable-Gain Amplifier

LMH6401
SBOS730A – APRIL 2015 – REVISED MAY 2015
www.ti.com
7.5 Electrical Characteristics
At T_A = 25°C, VS– = –2.5 V, VS+ = 2.5 V, VOCM = 0 V, R_LOAD = 200-Ω differential (R_{o(internal, diff)} = 20 Ω), V_O = 2 V_PPD, and A_V
= 26 dB, unless otherwise noted.
PARAMETER
TEST CONDITIONS
DYNAMIC PERFORMANCE
SSBW
LSBW
SR
t_R, t_F
Small-signal, –3-dB bandwidth
Large-signal, –3-dB bandwidth
Bandwidth for 0.1-dB flatness
Slew rate
Rise and fall time
Overdrive recovery
A_V = 26 dB, V_O = 200 mV_PPD
A_V = 26 dB, V_O = 2.0 V_PPD
A_V = 26 dB, V_O = 2.0 V_PPD
V_O = 2-V step
V_O = 2-V step, 10% to 90%
Overdrive = ±0.5 V
Output balance error
f = 1 GHz
t_s
HD2
HD3
OIP2
OIP3
IMD2
Settling time to 1%
Second-harmonic distortion
Third-harmonic distortion
Output second-order intercept point
Output third-order intercept point
Second-order intermodulation
distortion
V_O = 2-V step, R_L= 200 Ω
f = 200 MHz, V_O = 2.0 V_PPD
f = 500 MHz, V_O = 2.0 V_PPD
f = 1 GHz, V_O = 2.0 V_PPD
f = 2 GHz, V_O = 2.0 V_PPD
f = 200 MHz, V_O = 2.0 V_PPD
f = 500 MHz, V_O = 2.0 V_PPD
f = 1 GHz, V_O = 2.0 V_PPD
f = 2 GHz, V_O = 2.0 V_PPD
f = 200 MHz, P_O = –2 dBm per tone
f = 500 MHz, P_O = –2 dBm per tone
f = 1 GHz, P_O = –2 dBm per tone
f = 2 GHz, P_O = –2 dBm per tone
f = 200 MHz, P_O = –2 dBm per tone
f = 500 MHz, P_O = –2 dBm per tone
f = 1 GHz, P_O = –2 dBm per tone
f = 2 GHz, P_O = –2 dBm per tone
f = 500 MHz, V_O = 1.0 V_PP per tone
IMD3
Third-order intermodulation
distortion
f = 500 MHz, V_O = 1.0 V_PP per tone
P1dB 1-dB compression point
f = 500 MHz, power measured at amplifier
output
NF
Noise figure
R_S = 100 Ω
f = 200 MHz
f = 1 GHz
Output-referred noise voltage
S12
Reverse transmission (S12)
A_V = 26 dB, f > 1 MHz
f = 1 GHz
S11
Input return loss (S11)
100-Ω system, f = 2 GHz
GAIN PARAMETERS
Maximum voltage gain
Minimum voltage gain
Gain range
Gain step size
Cumulative gain error
A_V = 26 dB to 10 dB
(referenced to 26-dB gain)
A_V = 26 dB to –6 dB
(referenced to 26-dB gain)
Gain step transition time
MIN
TYP
4.5
4.5
500
18200
82
600
–47
700
–73
–68
–63
–58
–80
–72
–63
–54
67
65
60
52
43
40
33
27
–68
–83
18.3
7.7
8
30.4
–65
–15
25.5
26.0
–7.5
–6.0
32
0.9
1
–0.5
–1
1
MAX UNIT
TEST
LEVEL ⁽¹⁾
GHz
C
GHz
C
MHz
C
V/µs
C
ps
C
ps
C
dB
C
ps
C
dBc
C
dBc
C
dBc
C
dBc
C
dBc
C
dBc
C
dBc
C
dBc
C
dBm
C
dBm
C
dBm
C
dBm
C
dBm
C
dBm
C
dBm
C
dBm
C
dBc
C
dBc
C
dBm
C
dB
C
dB
C
nV/√Hz
C
dB
C
dB
C
26.5 dB
A
–4.5 dB
A
dB
C
1.1 dB
A
0.5 dB
A
1 dB
A
ns
C
(1) Test levels: (A) 100% DC tested at 25°C unless otherwise specified. Over-temperature limits by characterization and simulation. (B)
Limits set by bench verification and simulation. (C) Typical value only for information.
6
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