Datasheet

ELECTRICAL CHARACTERISTICS; V
S+
– V
S –
= 5 V:
THS4508
SLAS459E – SEPTEMBER 2005 – REVISED SEPTEMBER 2008 .................................................................................................................................... www.ti.com
Test conditions unless otherwise noted: V
S+
= 5 V, V
S –
= 0 V, G = 10 dB, CM = open, V
O
= 2 V
PP
, 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.
TEST
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
LEVEL
(1)
AC PERFORMANCE (see Figure 44 )
G = 6 dB, V
O
= 100 mV
PP
2 GHz
G = 10 dB, V
O
= 100 mV
PP
1.7 GHz
Small-Signal Bandwidth
G = 14 dB, V
O
= 100 mV
PP
600 MHz
G = 20 dB, V
O
= 100 mV
PP
300 MHz
Gain-Bandwidth Product G = 20 dB 3 GHz
Bandwidth for 0.1 dB flatness G = 10 dB, V
O
= 2 V
PP
400 MHz
Large-Signal Bandwidth G = 10 dB, V
O
= 2 V
PP
1.5 GHz
Slew Rate (Differential) 6400 V/ µ s
Rise Time 0.5 ns
Fall Time V
O
= 2-V Step 0.5 ns
Settling Time to 1% 2 ns
Settling Time to 0.1% 12 µ s
f = 10 MHz – 104
2nd-Order Harmonic Distortion f = 50 MHz – 82
f = 100 MHz – 69
dBc
f = 10 MHz – 105 C
3rd-Order Harmonic Distortion f = 50 MHz – 92
f = 100 MHz – 81
f
C
= 70 MHz – 78
2nd-Order Intermodulation Distortion
f
C
= 140 MHz – 64
200-kHz tone spacing,
dBc
R
L
= 499 Ω
f
C
= 70 MHz – 95
3rd-Order Intermodulation Distortion
f
C
= 140 MHz – 78
f
C
= 70 MHz 78
2nd-Order Output Intercept Point
f
C
= 140 MHz 58
200-kHz tone spacing,
dBm
R
L
= 100 Ω
f
C
= 70 MHz 42
3rd-Order Output Intercept Point
f
C
= 140 MHz 35
f
C
= 70 MHz 12.2
1-dB Compression Point
(2)
dBm
f
C
= 140 MHz 10.8
Noise Figure 50- Ω system, 10 MHz 19.2 dB
Input Voltage Noise f > 10 MHz 2.3 nV/ √ Hz
Input Current Noise f > 10 MHz 2.9 pA/ √ Hz
DC PERFORMANCE
Open-Loop Voltage Gain (A
OL
) 68 dB C
T
A
= +25 ° C 1 4
Input Offset Voltage mV A
T
A
= – 40 ° C to +85 ° C 1 5
Average Offset Voltage Drift 2.3 µ V/ ° C B
T
A
= +25 ° C 1.75 8 15.5
Input Bias Current µ A A
T
A
= – 40 ° C to +85 ° C 8 18.5
Average Bias Current Drift 20 nA/ ° C B
T
A
= +25 ° C 0.5 3.6
Input Offset Current µ A A
T
A
= – 40 ° C to +85 ° C 0.5 7
Average Offset Current Drift 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.
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