LTC1051ACJ8 Linear Technology, LTC1051ACJ8 Datasheet - Page 9

• Manufacturer Part Number: LTC1051ACJ8
• Description: DUAL CHOPPER STABILIZED 8-CDIP
• Manufacturer: Linear Technology

Specifications of LTC1051ACJ8

• Amplifier Type: Chopper (Zero-Drift)
• Number Of Circuits: 2
• Slew Rate: 4 V/µs
• Gain Bandwidth Product: 2.5MHz
• Current - Input Bias: 15pA
• Voltage - Input Offset: 0.5µV
• Current - Supply: 1mA
• Voltage - Supply, Single/dual (±): 4.75 V ~ 16 V, ±2.38 V ~ 8 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 8-CDIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Output Type: -
• Current - Output / Channel: -
• -3db Bandwidth: -

APPLICATIO S I FOR ATIO
2. If we arbitrarily accept that “aliasing” occurs when
output alias signals reach an amplitude of 0.01% or more
of the output signal, then: the approximate minimum
frequency of an AC input signal which will cause aliasing
is equal to the internal clock frequency multiplied by the
square root of the op amp feedback factor. For instance,
with closed-loop gain of –10, the feedback factor is 1/11
and if f
the frequency of the input signal exceeds 750Hz to 800Hz
(Figure 5a).
3. The number of alias signals increases when the input
signal frequency increases (Figure 5b).
CLK
NOTE: THE f
ALIAS FREQUENCY IS 95dB
DOWN FROM THE OUTPUT LEVEL
13dBV
15dB
–107
/DIV
= 2.6kHz, alias signals can be detected when
B: MAG
RANGE: 9dBV
CENTER: 2 625Hz
X: 2535Hz
CLK
Figure 6b. Output Voltage Spectrum of 1/2 LTC1051 Operating as a Unity-Gain Inverting Amplifier.
V
Figure 6a. Output Voltage Spectrum of 1/2 LTC1051 Operating as a Unity-Gain Inverting Amplifier.
V
S
– f
S
= ±5V, R
IN
= ±5V, R
U
= 85Hz
U
L
L
= 10k, C
= 10k, C
2f
15dB
CLK
NOTE: ALL ALIAS FREQUENCY
80dB TO 84dB DOWN FROM OUTPUT
5f
CLK
– f
f
13dBV
BW: 19.097Hz
Y: – 74.16dBV
IN
IN
15dB
–107
– f
/DIV
– 2f
W
L
L
IN
= 50pF, V
f
= 50pF, V
CLK
CLK
B: MAG
RANGE: 9dBV
CENTER: 10 000Hz
X: 10000Hz
6f
f
CLK
IN
= 2.685kHz
– f
IN
2 • f
IN
IN
U
= 8V
CLK
= 8V
P-P
P-P
STATUS: PAUSED
f
IN
, 10kHz
SPAN: 2 000Hz
, 2.685kHz
– f
CLK
RMS: 25
BW: 95.485Hz
Y: 7.98dBV
f
IN
= 10kHz
4. When the frequency, f
f
the amplitude of the incoming signal. The output “signal to
alias ratio” cannot be increased by just boosting the input
signal amplitude. However, when the input AC signal
frequency well exceeds the clock frequency, the amplitude
of the alias signals does not directly scale with the input
amplitude. The “signal to alias ratio” increases when the
output swings closely to the rails. (See Figure 5b and
Figure 7.) It is important to note that the LTC1051/
LTC1053 op amps, under light loads (R
closely to the supply rails without generating harmonic
distortion (Figure 8).
CLOCK
83.5dB
, the alias signal(s) amplitude(s) directly scale with
STATUS: PAUSED
SPAN: 10 000Hz
1kHz
V
8V
IN
P-P
10k
= 10kHz
LTC1051/LTC1053
RMS: 50
IN
80dB
, of the input signal is less than
–
+
LTC1051
1/2
– 5V
5V
10k
0.1µF
0.1µF
L
≥ 10k), swing
1051/53 F05a
50pF
10513fa
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