LTC2053CMS8-SYNC#TRPBF Linear Technology, LTC2053CMS8-SYNC#TRPBF Datasheet - Page 12

• Manufacturer Part Number: LTC2053CMS8-SYNC#TRPBF
• Description: IC INSTRUMNT AMP R-RIN/OUT 8MSOP
• Manufacturer: Linear Technology

Specifications of LTC2053CMS8-SYNC#TRPBF

• Amplifier Type: Chopper (Zero-Drift)
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Slew Rate: 0.2 V/µs
• Gain Bandwidth Product: 200kHz
• Current - Input Bias: 4nA
• Voltage - Input Offset: 5µV
• Current - Supply: 950µA
• Voltage - Supply, Single/dual (±): 2.7 V ~ 11 V, ±1.35 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• -3db Bandwidth: -

applicaTions inForMaTion
LTC2053/LTC2053-SYNC
If a square wave is used to drive the CLK pin, a 5µs RC
time constant should be placed in front of the CLK pin to
maintain low offset voltage performance (see Figure 2).
This avoids internal and external coupling of the high
frequency components of the external clock at the instant
the LTC2053-SYNC holds the sampled input.

–10
–15
–20
20
15
10
–5
5
0
0
Figure 2. Centered Justified for a Single Line of Text
Figure 3. LTC2053-SYNC Input
Offset vs Sample Frequency
SAMPLE FREQUENCY (Hz) (= F
LTC2053-SYNC
2000
V
V
+IN
–IN
4000
V
+
–
D
TYP LTC2053
SAMPLE FREQUENCY
3
2
–
+
V
5V
V
V
S
S
S
6000
8
4
= ±5V
= 5V
= 3V
CLK
1
5
8000
CLK
6 R2
R1
/8)
7
10000
2053 F03
1k
4.7nF
V
0V
OUT
EXTERNAL
CLOCK
2053 F02
14
12
10
5V
8
6
4
2
0
Figure 4. LTC2053-SYNC Average Input
Bias Current vs Sample Frequency
0
V
V
V
S
REF
CM
= 5V
SAMPLE FREQUENCY (Hz) (= F
= 1V
= 0
2000
4000
TYP LTC2053
SAMPLE FREQUENCY
The LTC2053-SYNC is tested with a sample clock of 3kHz
(f
In addition, the LTC2053-SYNC is tested at one-half and
2x this frequency to verify proper operation. The curves
in the Typical Performance Characteristics section of this
data sheet apply to the LTC2053-SYNC when driving it
with a 24kHz clock at Pin 1 (f
clock rate). Below are three curves that show the behavior
of the LTC2053-SYNC as the clock frequency is varied.
The offset is essentially unaffected over a 2:1 increase or
decrease of the typical LTC2053 sample clock speed. The
bias current is directly proportional to the clock speed.
The noise is roughly proportional to the square root of
the clock frequency. For optimum noise and bias current
performance, drive the LTC2053-SYNC with a nominal
24kHz external clock (3kHz sample clock).
6000
CLK
= 24kHz) to the same specifications as the LTC2053.
8000
CLK
/8)
10000
2053 F04
12
10
Figure 5. LTC2053-SYNC Input Referred
Noise vs Sample Frequency
8
6
4
2
0
0
CLK
2000
SAMPLE FREQUENCY (F
= 24kHz, 3kHz sample
4000
V
T
NOISE IN 10Hz BANDWIDTH
S
A
TYP LTC2053
SAMPLE FREQUENCY
= 5V
= 25°C
6000
CLK
8000
/8)
2053syncfc
10000
2053 F05