THS4521 datasheet(17/51 Pages) TI

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7.9 Typical Characteristics: (VS+) – (VS–) = 3-V to 12-V Supply Range (continued)

at TA ≈ 25°C, VOCM pin = open, RF = 1.5 kΩ, RL = 1 kΩ, VO = 2 VPP, 50-Ω input match, G = 1 V/V, PD = VS+, single-ended

input, differential output, and input and output referenced to default midsupply for AC-coupled tests (unless otherwise noted);

see Figure 8-1 for a gain of 1-V/V test circuit.

Frequency (Hz)

-40

-300

-25

-270

-10

-240

-210

-180

-150

-120

-90

-60

10k

100k

10M

100M

D103

Gain, no load

Gain, 100-: load

Phase, no load

Phase, 100-: load

Simulated

Figure 7-41. Main Amplifier Differential Open-Loop Gain and

Phase vs Frequency

Frequency (Hz)

100

1000

10000

100

10k

100k

10M

100M

Simulated

Figure 7-42. Open-Loop Output Impedance vs Frequency

Frequency (Hz)

0.01

0.1

100

100k

10M

60M

40k

D049

VS = 3 V

VS = 5 V

VS = 12 V

Figure 7-43. Closed-Loop Output Impedance vs Frequency

Time, 20 ns per division

-100

-80

-60

-40

-20

D013

VS = 12 V

VS = 5 V

VS = 3 V

VO = 100-mV step, tr (10% - 90%) = 5.7 ns

Figure 7-44. Small-Signal Step Response

Supply Voltage, VS (V)

675

700

725

750

775

800

825

850

875

900

925

950

975

1000

D066

IS+, TA = 40qC

IS+, TA = 25qC

IS+, TA = 85qC

IS+, TA = 125qC

Average of 30 units

Figure 7-45. Quiescent Current vs VS

Time, 500 ns per division

-1.5

-1

-0.5

0.5

1.5

2.5

3.5

4.5

5.5

D068

5 MHz, 2-VPP input, G = 1 V/V, see Figure 8-1

Figure 7-46. PD Turnon and Turnoff Waveform

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THS4561

SBOS874C – AUGUST 2017 – REVISED DECEMBER 2020

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