OPA2684IDCNT Datasheet, PDF (7/34 Pages) Texas Instruments – Low-Power, Dual Current-Feedback OPERATIONAL AMPLIFIER

TYPICAL CHARACTERISTICS: V_S = ±5V (Cont.)
At T_A = +25°C, G = +2, R_F = 800Ω, and R_L = 100Ω, unless otherwise noted.
INPUT VOLTAGE AND CURRENT NOISE DENSITY
100
Inverting Current Noise
17pA/√Hz
Noninverting Current Noise
9.4pA/√Hz
10
Voltage Noise
3.7nV/√Hz
1
100
1k
10k
100k
1M
10M
Frequency (Hz)
2-TONE, 3RD-ORDER
INTERMODULATION DISTORTION
–50
20MHz
–60
+5V
PI
50Ω OPA2684
–70
–5V
800Ω
800Ω
50Ω
PO
50Ω
10MHz
5MHz
–80
1MHz
–90
–8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8
Power at Load (P_O each tone, dBm)
50
40
30
20
10
0
1
R_S vs C_LOAD
0.5dB Peaking
10
100
C_LOAD (pF)
SMALL-SIGNAL BANDWIDTH vs C_LOAD
9
12pF _5pF
6
3
V_I
0
+5V
50Ω OPA2684
–5V
–3
800Ω
800Ω
–6
1
RS
VO
CL
1kΩ
100pF
75pF
50pF
1kΩ is
Optional
33pF
20pF
10
Frequency (MHz)
100 300
CMRR and PSRR vs FREQUENCY
70
CMRR
60
50
+PSRR
40
30
–PSRR
20
10
0
10²
10³
10⁴
10⁵
10⁶
10⁷
10⁸
Frequency (Hz)
OPEN-LOOP TRANSIMPEDANCE GAIN AND PHASE
120
0
20log (Z_OL)
100
–30
80
–60
60
–90
∠ Z_OL
40
–120
20
–150
0
–180
10²
10³
10⁴
10⁵
10⁶
10⁷
10⁸ 10⁹
Frequency (Hz)
OPA2684
7
SBOS239D
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