OPA2662 Datasheet, PDF (17/18 Pages) Burr-Brown (TI) – Dual, Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER

Data
TTL
–V_CC
Q
±1V
Equalization
Q
Record/Play
Selection
+V_CC +V_CCOUT
1
16
R_Q
5
C₁
R_B1
I_Q
2
14
100Ω ^B1
E₁
3 EN₁
15
GND
4
6
EN₂
10
R_B2
7
E₂
100Ω ^B2
C₂
OPA2662 ¹¹
8
9
–V_CC –V_CCOUT
FIGURE 15. Analog-to-Digital Video Tape Record Amplifier.
Voltage compliance
across the load: 8Vp-p
I_OUT = ±75mA
39Ω
R_OG
Playback
Amplifier
+80V
430Ω
75
BFQ262 ₁₀
14
t
EN₁
100Ω ₂
15
1
100Ω ₇
10
EN₂
t
11
6 _OPA2662
1.5kΩ 200Ω
10pF
–5V
FIGURE 16. Cascode Stage Driver.
C ^50Ω
V_OUT
100Ω
50Ω
V_IN
B
50Ω
E
1/2
OPA2662
R_E
100Ω
C_E
6.8pF
The precise pulse response and the high slew rate enables the OPA2662 to be used in digital communication systems. Figure
16 shows the output amplifier for a high-speed data transmission system up to 440Mbit/s. The current source output drives
directly a 50Ω coax cable and guarantees a 1V voltage drop over the termination resistor at the end of the cable. The input
voltage to output voltage conversion factor is set by R_E. C_E compensates the stray capacitance at the collector output. The
generator rise and fall time equals to 1.19ns and the OPA2662 slightly increases the rise and fall time to 1.26ns.
FIGURE 17. Driver Amplifier for a Digital 440Mbit/s Transmission System.
17
OPA2662