Datasheet LTC1992 (Analog Devices)

LTC1992 Family Low Power, Fully Differential Input/Output Amplifier/Driver Family
FEATURES DESCRIPTION
n
Available with Adjustable Gain or Fixed Gain of 1,
The LTC®1992 product family consists of five fully differen-
2, 5 or 10
tial, low power amplifiers. The LTC1992 is an unconstrained n
±0.3% (Max) Gain Error from –40°C to 85°C
fully differential amplifier. The LTC1992-1, LTC1992-2, n
3.5ppm/°C Gain Temperature Coefficient
LTC1992-5 and LTC1992-10 are fixed gain blocks (with n
5ppm Gain Long Term Stability
gains of 1, 2, 5 and 10 respectively) featuring precision n
Fully Differential Input and Output
on-chip resistors for accurate and ultrastable gain. All of n
CLOAD Stable up to 10,000pF
the LTC1992 parts have a separate internal common mode n
Adjustable Output Common Mode Voltage
feedback path for outstanding output phase balancing n Rail-to-Rail Output Swing and reduced second order harmonics. The VOCM pin sets n Low Supply Current: 1mA (Max) the output common mode level independent of the input n High Output Current: 10mA (Min) common mode level. This feature makes level shifting of n Specified on a Single 2.7V to ±5V Supply signals easy. n DC Offset Voltage <2.5mV (Max) The amplifiers’ differential inputs operate with signals n Available in 8-Lead MSOP Package ranging from rail-to-rail with a common mode level from the negative supply up to 1.3V from the positive supply.
APPLICATIONS
The differential input DC offset is typically 250μV. The rail-to-rail outputs sink and source 10mA. The LTC1992 n Differential Driver/Receiver is stable for all capacitive loads up to 10,000pF. n Differential Amplification n Single-Ended to Differential Conversion The LTC1992 can be used in single supply applications n Level Shifting with supply voltages as low as 2.7V. It can also be used n Trimmed Phase Response for Multichannel Systems with dual supplies up to ±5V. The LTC1992 is available in L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear an 8-pin MSOP package. Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Single-Supply, Single-Ended to Differential Conversion
10k 5V 5V 3 5V 5V 10k 1 4 VIN 0V V 0V IN – + 2.5V (5V/DIV) 7 VMID 0V –5V –5V LTC1992 2 VOCM +OUT 5V 10k 5V 8 + – 2.5V 5 (2V/DIV) 0.01μF 6 0V
INPUT SIGNAL OUTPUT SIGNAL
–OUT
FROM A
0V 10k
FROM A ±5V SYSTEM SINGLE-SUPPLY SYSTEM
1992 TA01a 1992 TA01b 1992fb 1