THS4508 Datasheet, PDF (4/29 Pages) Texas Instruments – WIDEBAND, LOW NOISE, LOW DISTORTION FULLY DIFFERENTIAL AMPLIFIER

THS4508
SLAS459A – SEPTEMBER 2005 – REVISED FEBRUARY 2006
www.ti.com
ELECTRICAL CHARACTERISTICS; V_S+– V_S– = 5 V:
Test conditions unless otherwise noted: V_S+ = 5 V, V_S– = 0 V, G = 10 dB, CM = open, V_O = 2 Vpp, R_F = 349 Ω, R_L = 200 Ω
Differential, T = 25°C Single-Ended Input, Differential Output, Input Referenced to Ground, and Output Referenced to
Mid-supply
PARAMETER
AC PERFORMANCE (Figure 44)
Small-Signal Bandwidth
Gain-Bandwidth Product
Bandwidth for 0.1dB flatness
Large-Signal Bandwidth
Slew Rate (Differential)
Rise Time
Fall Time
Settling Time to 0.1%
2^nd Order Harmonic Distortion
3^rd Order Harmonic Distortion
2^nd Order Intermodulation Distortion
3^rd Order Intermodulation Distortion
2^nd Order Output Intercept Point
3^rd Order Output Intercept Point
1-dB Compression Point⁽²⁾
Noise Figure
Input Voltage Noise
Input Current Noise
DC PERFORMANCE
Open-Loop Voltage Gain (A_OL)
Input Offset Voltage
Average Offset Voltage Drift
Input Bias Current
Average Bias Current Drift
Input Offset Current
Average Offset Current Drift
TEST CONDITIONS
G = 6 dB, V_O = 100 mV_PP
G = 10 dB, V_O = 100 mV_PP
G = 14 dB, V_O = 100 mV_PP
G = 20 dB, V_O = 100 mV_PP
G = 20 dB
G = 10 dB, V_O = 2 V_PP
G = 10 dB, V_O = 2 V_PP
V_O = 2-V Step
f = 10 MHz
f = 50 MHz
f = 100 MHz
f = 10 MHz
f = 50 MHz
f = 100 MHz
200 kHz tone spacing,
R_L = 499 Ω
200 kHz tone spacing,
R_L = 100 Ω
f_C = 70 MHz
f_C = 140 MHz
50-Ω system, 10 MHz
f > 10 MHz
f > 10 MHz
f_C = 70 MHz
f_C = 140 MHz
f_C = 70 MHz
f_C = 140 MHz
f_C = 70 MHz
f_C = 140 MHz
f_C = 70 MHz
f_C = 140 MHz
T_A = 25°C
T_A = -40°C to 85°C
T_A = 25°C
T_A = -40°C to 85°C
T_A = 25°C
T_A = -40°C to 85°C
MIN
TYP
MAX
UNITS
TEST
LEVEL ⁽¹⁾
2
1.7
600
300
3
400
1.5
6400
0.5
0.5
2
–104
–82
–69
–105
–92
–81
–78
–64
–95
–78
78
58
42
35
12.2
10.8
19.2
2.3
2.9
GHz
GHz
MHz
MHz
GHz
MHz
GHz
V/µs
ns
ns
ns
dBc
C
dBc
dBm
dBm
dB
nV/√Hz
pA/√Hz
68
dB
C
1
4
mV
A
1
5
2.3
µA/°C
B
1.75
8
15.5
µA
A
8
18.5
20
nA/°C
B
0.5
3.6
µA
A
0.5
7
7
nA/°C
B
(1) Test levels: (A) 100% tested at 25°C. Overtemperature limits by characterization and simulation. (B) Limits set by characterization and
simulation. (C) Typical value only for information.
(2) The 1-dB compression point is measured at the load with 50-Ω double termination. Add 3 dB to refer to amplifier output.
4
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