Datasheet
LT1678/LT1679
10
sn16789 16789fs
FREQUENCY (MHz)
0.1
VOLTAGE GAIN (dB)
50
40
30
20
10
0
–10
PHASE SHIFT (DEG)
100
80
60
40
20
0
–20
PHASE SHIFT (DEG)
100
80
60
40
20
0
–20
1 10 100
16789 G24
GAIN
PHASE
V
S
= ±15V
V
CM
= 0V
C
L
= 10pF
T
A
= –55°C
T
A
= 25°C
T
A
= 125°C
T
A
= 125°C
T
A
= 25°C
T
A
= –55°C
FREQUENCY (MHz)
0.1
VOLTAGE GAIN (dB)
50
40
30
20
10
0
–10
1 10 100
16789 G26
GAIN
PHASE
V
S
= ±15V
V
CM
= –14V
C
L
= 10pF
FREQUENCY (MHz)
0.1
VOLTAGE GAIN (dB)
50
40
30
20
10
0
–10
1 10 100
16789 G25
GAIN
PHASE
V
S
= ±15V
V
CM
= 14.7V
C
L
= 10pF
T
A
= 125°C
T
A
= –55°C
PHASE SHIFT (DEG)
100
80
60
40
20
0
–20
T
A
= 25°C
T
A
= 125°C
T
A
= –55°C
T
A
= 25°C
T
A
= 25°C
T
A
= –55°C
T
A
= –55°C
T
A
= 125°C
T
A
= 25°C
FREQUENCY (Hz)
10
OUTPUT IMPEDANCE (Ω)
100
10
1
0.1
0.01
0.001
100k
16789 G28
100
1k
10k
1M
A
V
= 1
A
V
= 100
V
S
= ±15V
OUTPUT STEP (V)
–10 –8 –4 0 4 8
SETTLING TIME (µs)
6
5
4
3
2
1
0
–6 –2 2 6
16789 G22
SETTLING TIME (µs)
6
5
4
3
2
1
0
10
OUTPUT STEP (V)
–10 –8 –4 0 4 8–6 –2 2 6 10
16789 G23
+
–
5k
5k
V
IN
V
OUT
+
–
2k
2k
V
IN
V
OUT
R
L
= 1k
V
S
= ±15V
A
V
= 1
T
A
= 25°C
V
S
= ±15V
A
V
= –1
T
A
= 25°C
0.1% OF
FULL SCALE
0.1% OF
FULL SCALE
0.1% OF
FULL SCALE
0.1% OF
FULL SCALE
0.01% OF
FULL SCALE
0.01% OF
FULL SCALE
0.01% OF
FULL SCALE
0.01% OF
FULL SCALE
OUTPUT CURRENT (mA)
–10
OUTPUT VOLTAGE SWING (V)
–6
–2
0810
16789 G27
–8 –4
2
4
6
0
–0.1
–0.2
–0.3
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
V
S
= ±15V
T
A
= 125°C
T
A
= 125°C
T
A
= 25°C
T
A
= –55°C
T
A
= –55°C
T
A
= 25°C
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION + NOISE (%)
20 1k 10k 50k
16789 G29
100
0.1
0.01
0.001
0.0001
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION + NOISE (%)
20 1k 10k 50k
16789 G30
100
0.1
0.01
0.001
0.0001
A
V
= 100
A
V
= 10
A
V
= 1
A
V
= –100
A
V
= –10
A
V
= –1
Z
L
= 2k/15pF
V
S
= ±15V
V
O
= 20V
P-P
A
V
= 1, 10, 100
MEASUREMENT BANDWIDTH
= 10Hz TO 80kHz
Z
L
= 2k/15pF
V
S
= ±15V
V
O
= 20V
P-P
A
V
= –1, –10, –100
MEASUREMENT BANDWIDTH
= 10Hz TO 80kHz
+V
S
–V
S
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Gain, Phase Shift vs Frequency
Gain, Phase Shift vs Frequency
Gain, Phase Shift vs Frequency
Closed-Loop Output
Impedance vs Frequency
Settling Time vs Output
Step (Inverting)
Settling Time vs Output
Step (Noninverting)
Output Voltage Swing vs
Load Current
Total Harmonic Distortion and
Noise vs Frequency for
Noninverting Gain
Total Harmonic Distortion and
Noise vs Frequency for
Noninverting Gain