OPA2381 Datasheet, PDF (7/19 Pages) Burr-Brown (TI) – Precision, Low Power, 18MHz Transimpedance Amplifier

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OPA381
OPA2381
SBOS313B − AUGUST 2004 − REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS: V_S = +2.7V to +5.5V (continued)
All specifications at TA = +25°C, and RL = 10kΩ connected to VS/2, unless otherwise noted.
SMALL−SIGNAL STEP RESPONSE
(with or without pull−down)
200kHz (C_F = 16pF)
1MHz
(C_F = 3pF)
CF
50kΩ
OPA381
10kΩ
VP
V_P = 0V or −5V
Time (100ns/div)
LARGE−SIGNAL STEP RESPONSE
(without pull−down)
200kHz
1MHz
(C_F = 16pF)
(C_F = 3pF)
CF
50kΩ
OPA381
10kΩ
1000
Time (100ns/div)
INPUT VOLTAGE NOISE SPECTRAL DENSITY
100
10
1
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
LARGE−SIGNAL STEP RESPONSE
(with pull−down)
3pF
50kΩ
O PA3 81
10kΩ
−5V
Time (100ns/div)
OVERLOAD RECOVERY
6
V_OUT
40pF
20kΩ
4
250µA
IIN
OPA381
2
Nonlinear Linear
10kΩ
Operation Operation
VP
0
OPA381
0.8
0
0
OPA2381
I_IN
V_P = 0V or −5V
100 200 300 400 500 600 700 800 900 1000
Time (ns)
CHANNEL SEPARATION vs INPUT FREQUENCY
160
OPA2381
140
120
100
80
60
40
20
0
−20
−40
10 100 1k 10k 100k 1M 10M 100M
Input Frequency (Hz)
7