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| ISL28270_0708 Datasheet, PDF (5/18 Pages) Intersil Corporation – Dual and Quad Channel Micropower, Single Supply, Rail-to-Rail Input and Output (RRIO) Instrumentation Amplifiers | |||
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ISL28270, ISL28273, ISL28470
Electrical Specifications V+ = +5V, V- = 0V VCM = 1/2V+, VEN = V-, RL = Open, TA = +25°C, unless otherwise specified.
Boldface limits apply over the operating temperature range, -40°C to +125°C. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN
MAX
(Note 1) TYP (Note 1) UNIT
iN
Input Noise Current Density
ISL28270, ISL28470
ISL28273
fo = 1kHz
0.37
pA/âHz
0.75
pA/âHz
CMRR @
60Hz
Input Common Mode Rejection Ratio ISL28270, ISL28470
ISL28273
VCM = 1VP-P,
RL = 10kΩ to VCM
100
dB
83
PSRR+ @ Power Supply Rejection Ratio (V+) ISL28270, ISL28470 V+, V- = ±1.2V, ±2.5V,
96
dB
120Hz
ISL28273
VSOURCE = 1VP-P,
RL = 10kΩ to VCM
77
dB
PSRR- @ Power Supply Rejection Ratio (V-)
ISL28270, ISL28470 V+, V- = ±1.2V, ±2.5V,
105
dB
120Hz
ISL28273
VSOURCE = 1VP-P,
RL = 10kΩ to VCM
84
dB
NOTE:
1. Parts are 100% tested at +25°C. Over temperature limits established by characterization and are not production tested.
2. VSUPPLY = +5.25V max when VENL = +V (device in disable state).
Typical Performance Curves V+ = +5V, V- = 0V VCM = 1/2V+, VEN = V-, RL = Open, TA = +25°C, unless otherwise specified.
90
COMMON-MODE INPUT = V+
80
GAIN = 10,000V/V
GAIN = 5,000V/V
70
GAIN = 2,000V/V
GAIN = 1,000V/V
60
GAIN = 500V/V
50
GAIN = 200V/V
GAIN = 100V/V
40
30
1
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 1. ISL28270, ISL28470 FREQUENCY RESPONSE vs
CLOSED LOOP GAIN, VCM = V+ = 5V
70
COMMON-MODE INPUT = V+
60
GAIN = 1000
50
GAIN = 500
GAIN = 200
40
GAIN = 100
30
GAIN = 50
GAIN = 20
20
GAIN = 10
10
1E+00 1E+01 1E+02 1E+03 1E+04 1E+05 1E+06
FREQUENCY (Hz)
FIGURE 2. ISL28273 FREQUENCY RESPONSE vs CLOSED
LOOP GAIN, VCM = V+ = 5V
90
COMMON-MODE INPUT = 1/2V+
80
GAIN = 10,000V/V
GAIN = 5,000V/V
70
GAIN = 2,000V/V
GAIN = 1,000V/V
60
GAIN = 500V/V
50
GAIN = 200V/V
GAIN = 100V/V
40
30
1
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 3. ISL28270, ISL28470 FREQUENCY RESPONSE vs
CLOSED LOOP GAIN. V+ = 5V, VCM = 1/2V+
70
COMMON-MODE INPUT = 1/2V+
GAIN = 1000
60
GAIN = 500
50
GAIN = 200
GAIN = 100
40
GAIN = 50
30
GAIN = 20
20
GAIN = 10
10
1E+00
1E+01
1E+02 1E+03 1E+04
FREQUENCY (Hz)
1E+05
1E+06
FIGURE 4. ISL28273 FREQUENCY RESPONSE vs CLOSED
LOOP GAIN. V+ = 5V, VCM = 1/2V+
5
FN6260.4
August 3, 2007
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