Datasheet LTC6403-1 (Analog Devices) - 5

LTC6403-1
LTC6403-1 AC ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, V+ = 3V, V– = 0V, VCM = VOCM = VICM = Mid-Supply, VSHDN = OPEN, RI = 402
Ω
, RF = 402
Ω
, RT = 25.5
Ω
, unless otherwise noted (See Figure 2). VS is defined (V+ – V–). VOUTCM is defined as (V+OUT + V–OUT)/2. VICM is defined as (V+IN + V–IN)/2. VOUTDIFF is defined as (V+OUT – V–OUT). VINDIFF is defined as (VINP – VINM). SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
3MHz Distortion VS = 3V, VOUTDIFF = 2VP-P Single-Ended Input HD2 2nd Harmonic –97 dBc HD3 3rd Harmonic –95 dBc 3MHz Distortion VS = 3V, VOUTDIFF = 2VP-P Differential Input HD2 2nd Harmonic –106 dBc HD3 3rd Harmonic –94 dBc IMD Third-Order IMD at 10MHz VS = 3V, VOUTDIFF = 2VP-P Envelope –72 dBc f1 = 9.5MHz, f2 = 10.5MHz OIP3 Equivalent OIP3 at 3MHz (Note 12) VS = 3V 48 dBm tS Settling Time VS = 3V, Single-Ended Input 2V Step at Output 1% Settling 20 ns 0.1% Settling 30 ns NF Noise Figure, f = 3MHz RSOURCE = 804Ω, RI = 402Ω, 10.8 dB R F = 402Ω, VS = 3V R 8.9 dB SOURCE = 200Ω, RI = 100Ω, RF = 402Ω, VS = 3V f3dBFILTER Differential Filter 3dB Bandwidth 44.2 MHz
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings The voltage range for the output common mode range is tested using the may cause permanent damage to the device. Exposure to any Absolute test circuit of Figure 1 by applying a voltage on the VOCM pin and testing at Maximum Rating condition for extended periods may affect device both mid supply and at the Electrical Characteristics table limits to verify reliability and lifetime. that the differential gain has not deviated from the mid supply VOCM case
Note 2:
The inputs +IN, –IN are protected by a pair of back-to-back diodes. by more than 1%, and the common mode offset (VOSCM) has not deviated If the differential input voltage exceeds 1.4V, the input current should be by more than ±10mV from the mid supply case. limited to less than 10mA. Input pins (+IN, –IN, VOCM, and SHDN) are also
Note 8:
Input CMRR is defined as the ratio of the change in the input protected by steering diodes to either supply. If the inputs should exceed common mode voltage at the pins +IN or –IN to the change in differential either supply voltage, the input current should be limited to less than 10mA. input referred voltage offset. Output CMRR is defined as the ratio of the
Note 3:
A heat sink may be required to keep the junction temperature change in the voltage at the VOCM pin to the change in differential input below the absolute maximum rating when the output is shorted referred voltage offset. These specifications are strongly dependent on indefinitely. Long term application of output currents in excess of the feedback ratio matching between the two outputs and their respective inputs, absolute maximum ratings may impair the life of the device. and it is difficult to measure actual amplifier performance. See The Effects of
Note 4:
The LTC6403C-1/LTC6403I-1 are guaranteed functional over the Resistor Pair Mismatch in the Applications Information section of this data operating temperature range –40°C to 85°C. The LTC6403H-1 is guaranteed sheet. For a better indicator of actual amplifier performance independent of functional over the operating temperature range –40°C to 125°C. feedback component matching, refer to the PSRR specification.
Note 5:
The LTC6403C-1 is guaranteed to meet specified performance from
Note 9:
Differential power supply rejection (PSRR) is defined as the ratio 0°C to 70°C. The LTC6403C-1 is designed, characterized, and expected to of the change in supply voltage to the change in differential input referred meet specified performance from –40°C to 85°C but is not tested or QA voltage offset. Common mode power supply rejection (PSRRCM) is sampled at these temperatures. The LTC6403I-1 is guaranteed to meet defined as the ratio of the change in supply voltage to the change in the specified performance from –40°C to 85°C. The LTC6403H-1 is guaranteed common mode offset, VOUTCM – VOCM. to meet specified performance from –40°C to 125°C.
Note 10:
Output swings are measured as differences between the output
Note 6:
Input bias current is defined as the average of the input currents flowing and the respective power supply rail. into Pin 6 and Pin 15 (–IN, and +IN). Input offset current is defined as the
Note 11:
Extended operation with the output shorted may cause junction difference of the input currents flowing into Pin 15 and Pin 6 (I + – temperatures to exceed the 150°C limit and is not recommended. See Note OS = IB – IB )
Note 7:
Input common mode range is tested using the test circuit of 3 for more details. Figure 1 by measuring the differential gain with a ±1V differential output
Note 12:
A resistive load is not required when driving an AD converter with with V the LTC6403-1. Therefore, typical output power is very small. In order to ICM = mid-supply, and also with VICM at the input common mode range limits listed in the Electrical Characteristics table, verifying that the compare the LTC6403-1 with amplifiers that require 50Ω output load, the differential gain has not deviated from the mid supply common mode input LTC6403-1 output voltage swing driving a given RL is converted to OIP3 case by more than 1%, and the common mode offset (V as if it were driving a 50 OSCM) has not Ω load. Using this modified convention, 2VP-P is deviated from the mid-supply case by more than ±10mV. by definition equal to 10dBm, regardless of actual RL. 64031fb For more information www.linear.com/LTC6403-1 5