Datasheet

OPA847
8
SBOS251E
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= ±5V (Cont.)
T
A
= 25°C, G = +20V/V, R
G
= 39.2Ω, and R
L
= 100Ω, unless otherwise noted.
0.25
0.20
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
–0.25
SETTLING TIME
Time (ns)
Percent of Final Value (%)
0 5 10 15 20 25 30 35 40
G = +20V/V
R
L
= 100Ω
V
O
= 2V Step
See Figure 1
89
86
83
80
77
74
71
PHOTODIODE TRANSIMPEDANCE
FREQUENCY RESPONSE
Frequency (MHz)
Transimpedance Gain (dBΩ)
1 10 100
C
D
= 100pF
R
F
= 20kΩ
C
F
Adjusted
C
D
= 50pF
C
D
= 20pF
C
D
= 10pF
[20log 20kΩ]
20kΩ
OPA847
20kΩ
V
O
C
DIODE
[C
D
]
C
F
I
O
0.01µF
0.2
0.1
0
–0.1
–0.2
25.0
12.5
0
–12.5
–25.0
TYPICAL DC DRIFT OVER TEMPERATURE
Ambient Temperature (°C)
Input Offset Voltage (mV)
Input Bias and Offset Current (µA)
–50 –25 0 25 50 75 100 125
100 x I
OS
V
IO
I
b
100
90
80
70
60
50
20
18
16
14
12
10
SUPPLY AND OUTPUT CURRENT vs TEMPERATURE
Ambient Temperature (°C)
Output Current (mA)
Supply Current (mA)
–50 –25 0 25 50 75 100 125
Sourcing Output Current
Supply Current
Sinking Output Current
5
4
3
2
1
0
–1
–2
–3
–4
–5
COMMON-MODE INPUT RANGE AND OUTPUT SWING
vs SUPPLY VOLTAGE
Supply Voltage (±V)
Voltage Range (V)
2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00
Positive Output
R
L
= 100Ω
Negative Output
Negative Input
Positive Input
10
7
10
6
10
5
10
4
10
3
10
2
COMMON-MODE AND DIFFERENTIAL
INPUT IMPEDANCE
Frequency (Hz)
Input Impedance (Ω)
10
2
10
4
10
5
10
3
10
6
10
7
10
8
Common-Mode
(2.3MΩ, DC)
Differential
(2.7kΩ, DC)