Datasheet LT1469 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Dual 90MHz, 22V/µs 16-Bit Accurate Operational Amplifier |
| Pages / Page | 20 / 1 — FEATURES. DESCRIPTION. 90MHz Gain Bandwidth, f = 100kHz. Maximum Input … |
| File Format / Size | PDF / 2.4 Mb |
| Document Language | English |
FEATURES. DESCRIPTION. 90MHz Gain Bandwidth, f = 100kHz. Maximum Input Offset Voltage: 125µV
Model Line for this Datasheet
Text Version of Document
LT1469 Dual 90MHz, 22V/µs 16-Bit Accurate Operational Amplifier
FEATURES DESCRIPTION
n
90MHz Gain Bandwidth, f = 100kHz
The LT®1469 is a dual, precision high speed operational n
Maximum Input Offset Voltage: 125µV
amplifier with 16-bit accuracy and 900ns settling to 150µV n
Settling Time: 900ns (AV = –1, 150µV, 10V Step)
for 10V steps. This unique blend of precision and AC n
22V/µs Slew Rate
performance makes the LT1469 the optimum choice for n Low Distortion: –96.5dB for 100kHz, 10VP-P high accuracy applications such as DAC current-to-voltage n Maximum Input Offset Voltage Drift: 3µV/°C conversion and ADC buffers. The initial accuracy and drift n Maximum Inverting Input Bias Current: 10nA characteristics of the input offset voltage and inverting input n Minimum DC Gain: 300V/mV bias current are tailored for inverting applications. n Minimum Output Swing into 2k: ±12.8V The 90MHz gain bandwidth ensures high open-loop gain n Unity-Gain Stable at frequency for reducing distortion. In noninverting ap- n Input Noise Voltage: 5nV/√Hz plications such as an ADC buffer, the low distortion and n Input Noise Current: 0.6pA/√Hz DC accuracy allow full 16-bit AC and DC performance. n Total Input Noise Optimized for 1kΩ < RS < 20kΩ n Specified at ±5V and ±15V Supplies The 22V/µs slew rate of the LT1469 improves large signal performance compared to other precision op amps in
APPLICATIONS
applications such as active filters and instrumentation amplifiers. n Precision Instrumentation The LT1469 is available in a space saving 4mm × 4mm n High Accuracy Data Acquisition Systems leadless package, as well as in small outline and DIP pack- n 16-Bit DAC Current-to-Voltage Converter ages. A single version, the LT1468, is also available. n ADC Buffer L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Low Distortion Active Filters Technology Corporation. All other trademarks are the property of their respective owners. n Photodiode Amplifiers
TYPICAL APPLICATION 16-Bit DAC I-to-V Converter and Reference Inverter for Bipolar Output Swing (VOUT = –10V to 10V)
15V
Bipolar Multiplying Mode (LTC1597)
VREF
Signal-to-(Noise + Distortion)
+ 40 DAC INPUT CODE = ALL ZEROS 1/2 LT1469 50 VREF = 20VP-P 2.4µs SETTLING TIME – TO 1LSB ON 20V STEP 15pF 60 TION) (dB) 70 15pF 12k 12k 80 12k 12k 16 BITS – 500kHz FILTER LTC1597 DAC INPUTS RLPF 90 1/2 LT1469 VOUT + 100 80kHz FILTER C SIGNAL/(NOISE + DISTOR LPF 30kHz 110 FILTER 10 100 1k 10k 100k –15V 1469 TA01 FREQUENCY (Hz) 1469 TA01a 1469fb 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Applications Information Typical Applications Simplified Schematic Package Description Revision History Typical Application Related Parts
FEATURES DESCRIPTION
n
90MHz Gain Bandwidth, f = 100kHz
The LT®1469 is a dual, precision high speed operational n
Maximum Input Offset Voltage: 125µV
amplifier with 16-bit accuracy and 900ns settling to 150µV n
Settling Time: 900ns (AV = –1, 150µV, 10V Step)
for 10V steps. This unique blend of precision and AC n
22V/µs Slew Rate
performance makes the LT1469 the optimum choice for n Low Distortion: –96.5dB for 100kHz, 10VP-P high accuracy applications such as DAC current-to-voltage n Maximum Input Offset Voltage Drift: 3µV/°C conversion and ADC buffers. The initial accuracy and drift n Maximum Inverting Input Bias Current: 10nA characteristics of the input offset voltage and inverting input n Minimum DC Gain: 300V/mV bias current are tailored for inverting applications. n Minimum Output Swing into 2k: ±12.8V The 90MHz gain bandwidth ensures high open-loop gain n Unity-Gain Stable at frequency for reducing distortion. In noninverting ap- n Input Noise Voltage: 5nV/√Hz plications such as an ADC buffer, the low distortion and n Input Noise Current: 0.6pA/√Hz DC accuracy allow full 16-bit AC and DC performance. n Total Input Noise Optimized for 1kΩ < RS < 20kΩ n Specified at ±5V and ±15V Supplies The 22V/µs slew rate of the LT1469 improves large signal performance compared to other precision op amps in
APPLICATIONS
applications such as active filters and instrumentation amplifiers. n Precision Instrumentation The LT1469 is available in a space saving 4mm × 4mm n High Accuracy Data Acquisition Systems leadless package, as well as in small outline and DIP pack- n 16-Bit DAC Current-to-Voltage Converter ages. A single version, the LT1468, is also available. n ADC Buffer L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Low Distortion Active Filters Technology Corporation. All other trademarks are the property of their respective owners. n Photodiode Amplifiers
TYPICAL APPLICATION 16-Bit DAC I-to-V Converter and Reference Inverter for Bipolar Output Swing (VOUT = –10V to 10V)
15V
Bipolar Multiplying Mode (LTC1597)
VREF
Signal-to-(Noise + Distortion)
+ 40 DAC INPUT CODE = ALL ZEROS 1/2 LT1469 50 VREF = 20VP-P 2.4µs SETTLING TIME – TO 1LSB ON 20V STEP 15pF 60 TION) (dB) 70 15pF 12k 12k 80 12k 12k 16 BITS – 500kHz FILTER LTC1597 DAC INPUTS RLPF 90 1/2 LT1469 VOUT + 100 80kHz FILTER C SIGNAL/(NOISE + DISTOR LPF 30kHz 110 FILTER 10 100 1k 10k 100k –15V 1469 TA01 FREQUENCY (Hz) 1469 TA01a 1469fb 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Applications Information Typical Applications Simplified Schematic Package Description Revision History Typical Application Related Parts
