LTC1992 Family
9
1992fb
TYPICAL PERFORMANCE CHARACTERISTICS
Differential Input Offset Voltage
vs Input Common Mode Voltage
Differential Input Offset Voltage
vs Input Common Mode Voltage
Differential Input Offset Voltage
vs Input Common Mode Voltage
Common Mode Rejection Ratio
vs Frequency (Note 7)
Power Supply Rejection Ratio
vs Frequency (Note 7) Output Balance vs Frequency
Differential Input Differential
Gain vs Frequency, V
S
= ±2.5V
Single-Ended Input Differential
Gain vs Frequency, V
S
= ±2.5V
Differential Phase Response
vs Frequency
Applicable to the LTC1992 only.
FREQUENCY (kHz)
10
–24
GAIN (dB)
–18
–12
–6
0
100 1000 10000
1992 G17
–30
–36
–42
–66
–60
–54
–48
6
12
C
LOAD
= 10000pF
C
LOAD
= 5000pF
C
LOAD
= 1000pF
C
LOAD
= 500pF
C
LOAD
= 100pF
C
LOAD
= 50pF
C
LOAD
= 10pF
R
IN
= R
FB
= 10k
FREQUENCY (kHz)
10
–24
GAIN (dB)
–18
–12
–6
0
100 1000 10000
1992 G18
–30
–36
–42
–66
–60
–54
–48
6
12
C
LOAD
= 10000pF
C
LOAD
= 5000pF
C
LOAD
= 1000pF
C
LOAD
= 500pF
C
LOAD
= 100pF
C
LOAD
= 50pF
C
LOAD
= 10pF
R
IN
= R
FB
= 10k
FREQUENCY (kHz)
10
PHASE (DEG)
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
100 1000
1992 G37
C
LOAD
=
10pF
50pF
100pF
500pF
1000pF
5000pF
10000pF
R
IN
= R
FB
= 10k
COMMON MODE VOLTAGE (V)
0
DIFFERENTIAL V
OS
(mV)
1922 G20
0.3
0.6
0.9 1.2 1.5 1.8 2.1 2.4 2.7
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
125°C
–40°C
25°C
85°C
+V
S
= 2.7V
–V
S
= 0V
V
OCM
= 1.35V
COMMON MODE VOLTAGE (V)
0 4.0
1922 G21
1.00.5 1.5 2.5 3.5 4.5
2.0
3.0
5.0
125°C
–40°C
85°C
25°C
DIFFERENTIAL V
OS
(mV)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
+V
S
= 5V
–V
S
= 0V
V
OCM
= 2.5V
COMMON MODE VOLTAGE (V)
–5 3
1922 G22
–3–4 –2 0 2 4
–1
1
5
125°C
–40°C
85°C
DIFFERENTIAL V
OS
(mV)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
25°C
+V
S
= 5V
–V
S
= –5V
V
OCM
= 0V
FREQUENCY (Hz)
40
CMRR (dB)
80
120
20
60
100
100 10k 100k 1M
1992 G23
0
1k
ΔV
AMPCM
ΔV
AMPDIFF
FREQUENCY (Hz)
10
40
PSRR (dB)
50
60
70
80
100 1k 10k 100k 1M
1992 G24
30
20
10
0
90
100
–V
S
+V
S
ΔV
S
ΔV
AMPDIFF
FREQUENCY (Hz)
110
–40
OUTPUT BALANCE (dB)
–60
–80
100 1k 10k 100k 1M
1992 G25
–20
0
–100
ΔV
OUTCM
ΔV
OUTDIFF