LTC2172CUKG-14PBF LINER [Linear Technology], LTC2172CUKG-14PBF Datasheet
LTC2172CUKG-14PBF
Related parts for LTC2172CUKG-14PBF
LTC2172CUKG-14PBF Summary of contents
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FEATURES n 4-Channel Simultaneous Sampling ADC n 73.7dB SNR n 90dB SFDR n Low Power: 311mW/202mW/162mW Total, 78mW/51mW/41mW per Channel n Single 1.8V Supply n Serial LVDS Outputs: One or Two Bits per Channel n Selectable Input Ranges: 1V P-P ...
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... LTC2172C, LTC2171C, LTC2170C............. 0°C to 70°C LTC2172I, LTC2171I, LTC2170I ............ –40°C to 85°C Storage Temperature Range ................... –65°C to 150°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC2172CUKG-14#PBF LTC2172CUKG-14#TRPBF LTC2172IUKG-14#PBF LTC2172IUKG-14#TRPBF LTC2171CUKG-14#PBF LTC2171CUKG-14#TRPBF LTC2171IUKG-14#PBF LTC2171IUKG-14#TRPBF ...
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CONVERTER CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER CONDITIONS Resolution (No Missing Codes) Integral Linearity Error Differential Analog Input (Note 6) Differential Linearity Error Differential Analog Input Offset Error (Note 7) Gain Error Internal Reference External Reference ...
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LTC2172-14/ LTC2171-14/LTC2170-14 DYNAMIC ACCURACY otherwise specifi cations are 25° SYMBOL PARAMETER CONDITIONS SNR Signal-to-Noise Ratio 5MHz Input 30MHz Input 70MHz Input 140MHz Input SFDR Spurious Free Dynamic Range 5MHz Input 2nd or 3rd Harmonic 30MHz ...
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DIGITAL INPUTS AND OUTPUTS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER + – ENCODE INPUTS (ENC , ENC ) – Differential Encode Mode (ENC Not Tied to GND) V Differential Input Voltage ID V Common Mode Input ...
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LTC2172-14/ LTC2171-14/LTC2170-14 POWER REQUIREMENTS range, otherwise specifi cations are SYMBOL PARAMETER CONDITIONS V Analog Supply Voltage (Note 10 Output Supply Voltage (Note 10 Analog Supply Current Sine Wave Input VDD I Digital Supply ...
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TIMING CHARACTERISTICS range, otherwise specifi cations are SYMBOL PARAMETER CONDITIONS Digital Data Outputs (R = 100Ω Differential, C TERM t Serial Data Bit Period 2-Lanes, 16-Bit Serialization SER 2-Lanes, 14-Bit Serialization 2-Lanes, 12-Bit Serialization 1-Lane, 16-Bit Serialization ...
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LTC2172-14/ LTC2171-14/LTC2170-14 TIMING DIAGRAMS ANALOG INPUT – ENC + ENC – DCO + DCO – – OUT OUT#A – OUT OUT#B SAMPLE N-6 *SEE THE DIGITAL OUTPUTS SECTION t AP ANALOG ...
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TIMING DIAGRAMS ANALOG INPUT – ENC + ENC – DCO + DCO + FR – FR – OUT OUT#A – OUT OUT#B SAMPLE N ANALOG INPUT N t ENCH – ENC + ENC – ...
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LTC2172-14/ LTC2171-14/LTC2170-14 TIMING DIAGRAMS t AP ANALOG INPUT N – ENC + ENC – DCO + DCO – – OUT OUT#A SAMPLE N-6 + – OUT#B , OUT#B ARE DISABLED ...
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TYPICAL PERFORMANCE CHARACTERISTICS LTC2172-14: Integral Nonlinearity (INL) 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 0 4096 8192 12288 16384 OUTPUT CODE 217214 G01 LTC2172-14: 8k Point FFT 30MHz IN –1dBFS, 65Msps 0 –10 –20 –30 –40 ...
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LTC2172-14/ LTC2171-14/LTC2170-14 TYPICAL PERFORMANCE CHARACTERISTICS LTC2172-14: SFDR vs Input Frequency, –1dBFS, 2V Range, 65Msps 100 150 200 250 300 INPUT FREQUENCY (MHz) 217214 G10 LTC2172-14 Sample Rate, VDD 5MHz ...
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TYPICAL PERFORMANCE CHARACTERISTICS LTC2171-14: 8k Point FFT 29MHz IN –1dBFS, 40Msps 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 0 10 FREQUENCY (MHz) 217214 G18 LTC2171-14: 8k Point 2-Tone FFT 68MHz, ...
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LTC2172-14/ LTC2171-14/LTC2170-14 TYPICAL PERFORMANCE CHARACTERISTICS LTC2171-14: SNR vs SENSE 5MHz, –1dBFS 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 SENSE PIN (V) 217214 G27 LTC2170-14: 8k Point FFT, ...
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TYPICAL PERFORMANCE CHARACTERISTICS LTC2170-14: SNR vs Input Frequency, –1dBFS, 2V Range, 25Msps 100 150 200 250 300 350 INPUT FREQUENCY (MHz) 217214 G36 LTC2170-14 Sample Rate, VDD ...
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LTC2172-14/ LTC2171-14/LTC2170-14 PIN FUNCTIONS + A (Pin 1): Channel 1 Positive Differential Analog IN1 Input. – A (Pin 2): Channel 1 Negative Differential Analog IN1 Input. V (Pin 3): Common Mode Bias Output, Nominally CM12 Equal to V /2. V ...
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PIN FUNCTIONS mode (PAR/SER = V ), SDO is an input that enables DD internal 100Ω termination resistors on the digital out- puts. When used as an input, SDO can be driven with 1.8V to 3.3V logic through a 1k ...
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LTC2172-14/ LTC2171-14/LTC2170-14 FUNCTIONAL BLOCK DIAGRAM 1.8V CHANNEL 1 14-BIT SAMPLE- ANALOG ADC CORE AND-HOLD INPUT CHANNEL 2 SAMPLE- 14-BIT ANALOG AND-HOLD ADC CORE INPUT CHANNEL 3 SAMPLE- 14-BIT ANALOG AND-HOLD ADC CORE INPUT CHANNEL 4 SAMPLE- 14-BIT ANALOG AND-HOLD ADC ...
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APPLICATIONS INFORMATION CONVERTER OPERATION The LTC2172-14/LTC2171-14/LTC2170-14 are low power, 4-channel, 14-bit, 65Msps/40Msps/25Msps A/D convert- ers that are powered by a single 1.8V supply. The analog inputs should be driven differentially. The encode input can be driven differentially for optimal jitter ...
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LTC2172-14/ LTC2171-14/LTC2170-14 APPLICATIONS INFORMATION Transformer Coupled Circuits Figure 3 shows the analog input being driven transformer with a center-tapped secondary. The center tap is biased with V , setting the A/D input at its opti- CM mal ...
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APPLICATIONS INFORMATION Reference The LTC2172-14/LTC2171-14/LTC2170-14 has an internal 1.25V voltage reference. For a 2V input range using the internal reference, connect SENSE to V range using the internal reference, connect SENSE to ground. For a 2V input range with an ...
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LTC2172-14/ LTC2171-14/LTC2170-14 APPLICATIONS INFORMATION The differential encode mode is recommended for sinu- soidal, PECL, or LVDS encode inputs (Figures 12 and 13). The encode inputs are internally biased to 1.2V through 10k equivalent resistance. The encode inputs can be taken ...
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APPLICATIONS INFORMATION Table 1. Maximum Sampling Frequency for All Serialization Modes. Note That These Limits Are for the LTC2172-14. The Sampling Frequency for the Slower Speed Grades Cannot Exceed 40MHz (LTC2171-14) or 25MHz (LTC2170-14). SERIALIZATION MODE 2-Lane 16-Bit Serialization 2-Lane ...
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LTC2172-14/ LTC2171-14/LTC2170-14 APPLICATIONS INFORMATION applied—an exclusive-OR operation is applied between the LSB and all other bits. The FR and DCO outputs are not affected. The output randomizer is enabled by serially programming mode control register A1. Digital Output Test Pattern ...
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APPLICATIONS INFORMATION The fi rst bit of the 16-bit input word is the R/W bit. The next seven bits are the address of the register (A6:A0). The fi nal eight bits are the register data (D7:D0). If the R/W bit ...
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LTC2172-14/ LTC2171-14/LTC2170-14 APPLICATIONS INFORMATION REGISTER A2: OUTPUT MODE REGISTER (ADDRESS 02h ILVDS2 ILVDS1 ILVDS0 Bits 7-5 ILVDS2:ILVDS0 LVDS Output Current Bits 000 = 3.5mA LVDS Output Driver Current 001 = 4.0mA LVDS Output Driver Current 010 = 4.5mA ...
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APPLICATIONS INFORMATION GROUNDING AND BYPASSING The LTC2172-14 requires a printed circuit board with a clean unbroken ground plane. A multilayer board with an internal ground plane in the fi rst layer beneath the ADC is recommended. Layout for the printed ...
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LTC2172-14/ LTC2171-14/LTC2170-14 TYPICAL APPLICATIONS Silkscreen Top Inner Layer 2 GND 28 Top Side Inner Layer 3 21721014f ...
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TYPICAL APPLICATIONS Inner Layer 4 Bottom Side LTC2172-14/ LTC2171-14/LTC2170-14 Inner Layer 5 Power Silkscreen Bottom 21721014f 29 ...
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LTC2172-14/ LTC2171-14/LTC2170-14 TYPICAL APPLICATIONS C17 1μF A IN1 C29 A IN1 0.1μF A IN2 A IN2 C1 C30 C2 2.2μF 0.1μF 0.1μF C3 0.1μF A IN3 A IN3 C59 0.1μF A IN4 A IN4 30 LTC2172 Schematic SENSE R14 C4 ...
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PACKAGE DESCRIPTION 7.50 ±0.05 6.10 ±0.05 5.50 REF (2 SIDES) 6.45 ±0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED 7.00 ± 0.10 (2 SIDES) PIN 1 TOP MARK (SEE NOTE 6) 8.00 ...
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LTC2172-14/ LTC2171-14/LTC2170-14 RELATED PARTS PART NUMBER DESCRIPTION ADCs LTC2170-12/LTC2171-12/ 12-Bit, 25Msps/40Msps/65Msps LTC2172-12 1.8V Quad ADCs, Ultralow Power LTC2173-12/LTC2174-12/ 12-Bit, 80Msps/105Msps/125Msps LTC2175-12 1.8V Quad ADCs, Ultralow Power LTC2256-14/LTC2257-14/ 14-Bit, 25Msps/40Msps/65Msps LTC2258-14 1.8V ADCs, Ultralow Power LTC2259-14/LTC2260-14/ 14-Bit, 80Msps/105Msps/125Msps LTC2261-14 1.8V ADCs, ...