4
LT1969
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temp-
erature range, otherwise specifications are at T
A
= 25°C. V
S
= ±2.5V, V
CM
= 0V, nominal mode with a 13k resistor from CTRL1 to V
–
and a 49.9k resistor from CTRL2 to V
–
, pulse power tested unless otherwise noted. (Note 9)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The inputs are protected by back-to-back diodes. If the differential
input voltage exceeds 0.7V, the input current should be limited to less than
10mA.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum.
Note 4: Thermal resistance varies depending upon the amount of PC board
metal attached to the device. θ
JA
is specified for a 2500mm
2
test board
covered with 2 oz copper on both sides.
Note 5: Input offset voltage is exclusive of warm-up drift.
Note 6: Slew rate is measured between ±2V on a ±4V output with ±6V
supplies, and between ±1V on a ±1.5V output with ±2.5V supplies. Falling
slew rate is guaranteed by correlation to rising slew rate.
Note 7: Full power bandwidth is calculated from the slew rate:
FPBW = SR/2πV
P
.
Note 8: This parameter is not 100% tested.
Note 9: The LT1969C is guaranteed to meet specified performance from 0°C
to 70°C. The LT1969C is designed, characterized and expected to meet
specified performance from –40°C to 85°C but is not tested or QA sampled
at these temperatures.
Note 10: The LT1969C is guaranteed functional over the operating temperature
range of –40°C to 85°C.
A
VOL
Large-Signal Voltage Gain V
OUT
= ±1V, R
L
= 100Ω 5.0 10 V/mV
● 4.5 V/mV
V
OUT
= ±1V, R
L
= 25Ω 4.5 10 V/mV
● 4.0 V/mV
V
OUT
Output Swing R
L
= 100Ω, 10mV Overdrive 1.50 1.65 ±V
● 1.40 ±V
R
L
= 25Ω, 10mV Overdrive 1.35 1.50 ±V
● 1.25 ±V
I
OUT
= 200mA, 10mV Overdrive 0.87 1 ±V
● 0.80 ±V
I
SC
Short-Circuit Current (Sourcing) (Note 3) 500 mA
Short-Circuit Current (Sinking) 400 mA
SR Slew Rate A
V
= –10 (Note 6) 50 100 V/µs
Full Power Bandwidth 1V Peak (Note 7) 16 MHz
GBW Gain Bandwidth f = 1MHz 530 MHz
t
r
, t
f
Rise Time, Fall Time A
V
= 10, 10% to 90% of 0.1V, R
L
= 100Ω 7ns
Overshoot A
V
= 10, 0.1V, R
L
= 100Ω 5%
Propagation Delay A
V
= 10, 50% V
IN
to 50% V
OUT
, 0.1V, R
L
= 100Ω 5ns
Harmonic Distortion HD2, A
V
= 10, 2V
P-P
, f = 1MHz, R
L
= 100Ω/25Ω –75/–64 dBc
HD3, A
V
= 10, 2V
P-P
, f = 1MHz, R
L
= 100Ω/25Ω –80/–66 dBc
IMD Intermodulation Distortion A
V
= 10, f = 0.9MHz, 1MHz, 5dBm, R
L
= 100Ω/25Ω –77/–85 dBc
R
OUT
Output Resistance A
V
= 10, f = 1MHz 0.2 Ω
Channel Separation V
OUT
= ±1V, R
L
= 25Ω 82 92 dB
● 80 dB
I
S
Supply Current Per Amplifier 5 6.00 mA
● 6.25 mA
CTRL1 Voltage 13k to V
–
, Measured with Respect to V
–
0.77 0.95 1.25 V
● 0.74 1.30 V
CTRL2 Voltage 49.9k to V
–
, Measured with Respect to V
–
0.87 1.03 1.18 V
● 0.80 1.25 V
Minimum Supply Current per Amplifier; CTRL1, CTRL2 Open 250 650 µA
● 750 µA
Maximum Supply Current per Amplifier; CTRL1 or CTRL2 Shorted to V
–
11.5 mA
