ACF2101BUE4 Datasheet, PDF (6/16 Pages) Texas Instruments – Low Noise, Dual SWITCHED INTEGRATOR

TYPICAL PERFORMANCE CURVES
At T_A = +25°C, V+ = +5V, V– = –15V, C_INTEGRATION = C_INTERNAL = 100pF, unless otherwise noted.
10pA
1pA
BIAS CURRENT vs TEMPERATURE
100fA
10fA
–40 –20
0
20
40
60
Temperature (°C)
80 100
100
90
80
70
60
50
40
30
20
10
0
0
TOTAL OUTPUT NOISE vs C₁ and C₂
C2 ^{= 100pF}
C₂ = ^200pF
C₂ ^{= 500pF}
C₂ = ^1000pF
100 200 300 400 500 600 700 800 900 1000
C₁ (pF)
RESET TIME vs C_INTEGRATION
40
30
20
10
0
0 100 200 300 400 500 600 700 800 900 1000
C_INTEGRATION (pF)
Sw Out SETTLING TIME vs C_LOAD
8
6
4
2
0
0 100 200 300 400 500 600 700 800 900 1000
C_LOAD (pF)
1.65k
1.6k
1.55k
HOLD SWITCH R_ON vs INPUT CURRENT
I_IN
R_ON
Hold SW
1.5k
1.45k
1.4k
1.35k
–100µA –10µA –1µA
0
1µA 10µA 100µA
I_IN
1.65k
1.6k
1.55k
RESET SWITCH R_ON vs INPUT CURRENT
I_IN
R_ON
Reset SW
1.5k
1.45k
1.4k
NOTE: If I_IN flows through Reset Switch that
is ON, an output offset voltage is created.
1.35k
–100µA –10µA –1µA
0
1µA 10µA 100µA
I_IN
®
ACF2101
6