OPA2835 Datasheet, PDF (36/53 Pages) National Semiconductor (TI) – Ultra Low-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp

OPA835
OPA2835
SLOS713E – JANUARY 2011 – REVISED JULY 2013
www.ti.com
-90
V_S = 5 V,
V_OUT = 1 V_RMS,
-95 ^{G = 1,}
R_F = 0 W,
BW = 80 kHz
-100
-105
-110
A-weighting
R_L = 300 W,
R_L = 100 kW
No weighting
R_L = 300 W,
R_L = 100 kW
-115
-120
10
100
1k
10k
f - Frequency - Hz
100k
Figure 76. OPA835 1 Vrms 20 Hz to 80 kHz THD+N
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
0
V_S = 5 V,
V_OUT = 1 V_RMS,
G = 1,
R_F = 0 W
Gen Mon - 100k
R_L = 100k
2k 4k 6k 8k 10k 12k 14 16k 18k 20k
f - Frequency - Hz
Figure 77. OPA835 and AP Gen Mon 1kHz FFT
Plot; V_OUT = 1V_RMS, R_L = 100kΩ
0
-10
V_S = 5 V,
-20
V_OUT = 1 V_RMS,
G = 1,
-30
R_F = 0 W
-40
-50
-60
-70
-80
-90
-100
Gen Mon - 300
-110
-120
R_L = 300
-130
-140
0
2k 4k 6k 8k 10k 12k 14 16k 18k 20k
f - Frequency - Hz
Figure 78. OPA835 and AP Gen Mon 1kHz FFT Plot;
V_OUT = 1V_RMS, R_L = 300Ω
ADC Driver Performance
The OPA835 provides excellent performance when driving high performance delta-sigma (ΔΣ) and successive
approximation register (SAR) ADCs in low power audio and industrial applications.
36
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