LTC1051ACJ8 Linear Technology, LTC1051ACJ8 Datasheet - Page 10

• 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
5. For unity-gain inverting configuration, all the alias
frequencies are 80dB to 84dB down from the output signal
(Figures 6a, 6b). Combined with excellent THD under wide
swing, the LTC1051/LTC1053 op amps make efficient
unity gain inverters.
For gain higher than –1, the “signal to alias” ratio de-
creases at an approximate rate of –6dB per decade of
closed-loop gain (Figure 9).
6. For closed-loop gains of –10 or higher, the “signal to
alias” ratio degrades when the value of the feedback gain
setting resistor increases beyond 50k. For instance, the
LTC1051/LTC1053
10
20dBV
Figure 7. Output Voltage Spectrum of 1/2 LTC1051 Operating as an Inverting Amplifier with a Gain of –100 and
Amplifiying a 90mV
was 75 Down from the 10kHz Input Signal
15dB
–100
Figure 8. Output Voltage Swing vs Load
/DIV
6f
10
SYSTEM BUSY, ONLY ABORT COMMANDS ALLOWED
RANGE: 11dBV
CENTER: 10 000Hz
X: 5475Hz
CLK
9
8
7
6
5
4
3
2
1
0
0
– f
1k 2k 3k 4k 5k 6k 7k 8k 9k 10k
IN
U
R
L
(LOAD RESISTANCE,Ω)
U
V
V
V
NEGATIVE SWING
POSITIVE SWING
P-P
S
S
S
= ±8V, T
= ±5V, T
= ±2.5V, T
, 10kHz Input Signal. With a 9V
A
A
BW: 95.485Hz
Y: –58.05dBV
W
≤85°C
A
≤85°C
≤85°C
f
IN
=10kHz
1051/53 G08
U
STATUS: PAUSED
SPAN: 10 000Hz
P-P
Output Swing the Measured 2nd Harmonic (20kHz)
68dB value of Figure 7 decreases to 56dB if a (1k, 100k)
resistor set is used to set the gain of –100.
7. When the LTC1051/LTC1053 are used as noninverting
amplifiers, all the previous approximate rules of thumb
apply with the following exceptions: when the closed-loop
gain is 10(V/V) and below, the “signal to alias” ratio is 1dB
to 3dB less than the inverting case; when the closed-loop
gain is 100(V/V), the degradation can be up to 9dB,
especially when the input signal is much higher than the
clock frequency (i.e. f
8. The signal/alias ratio performance improves when the
op amp has bandlimited loop gain.
68dB
Figure 9. Signal to Alias Ratio vs
Closed-Loop Gain
90
80
70
60
50
40
30
20
10
90mV
10kHz
1
100Ω
R1
P-P
INVERTING CLOSED-LOOP GAIN
IN
= 10kHz).
–
+
LTC1051
10
1/2
– 5V
5V
10k
R2
0.1µF
0.1µF
V
f
IN
S
= ±5V
≤10kHz
1051/53 G09
100
1051/53 F07
50pF
V
OUT
10513fa