Octal, 12-Bit, 65Msps, 1.8V ADC with Serial LVDS Outputs
DescriptionThe MAX1438 octal, 12-bit analog-to-digital converter (ADC) features fully differential inputs, a pipelined architecture, and digital error correction incorporating a fully differential signal path. This ADC is optimized for low-power and high-dynamic performance in medical imaging instrumentation and digital communications applications. The MAX1438 operates from a 1.8V single supply and consumes only 913mW (114mW per channel) while delivering a 69.9dB (typ) signal-to-noise ratio (SNR) at a 5.3MHz input frequency. In addition to low operating power, the MAX1438 features a power-down mode for idle periods.
An internal 1.24V precision bandgap reference sets the full-scale range of the ADC. A flexible reference structure allows the use of an external reference for applications requiring increased accuracy or a different input voltage range. The reference architecture is optimized for low noise.
A single-ended clock controls the data-conversion process. An internal duty-cycle equalizer compensates for wide variations in clock duty cycle. An on-chip PLL generates the high-speed serial low-voltage differential signal (LVDS) clock.
The MAX1438 has self-aligned serial LVDS outputs for data, clock, and frame-alignment signals. The output data is presented in two's complement or binary format.
The MAX1438 offers a maximum sample rate of 65Msps. See the Pin-Compatible Versions table in the full data sheet for lower-speed versions. This device is available in a small, 14mm x 14mm x 1mm, 100-pin TQFP package with exposed pad and is specified for the extended industrial (-40°C to +85°C) temperature range.
- Excellent Dynamic Performance
- 69.9dB SNR at 5.3MHz
- 95dBc SFDR at 5.3MHz
- 85dB Channel Isolation
- Ultra-Low Power
- 114mW per Channel (Normal Operation)
- Serial LVDS Outputs
- Pin-Selectable LVDS/SLVS (Scalable Low-Voltage Signal) Mode
- LVDS Outputs Support Up to 30 Inches FR-4 Backplane Connections
- Test Mode for Digital Signal Integrity
- Fully Differential Analog Inputs
- Wide Differential Input Voltage Range (1.4VP-P)
- On-Chip 1.24V Precision Bandgap Reference
- Clock Duty-Cycle Equalizer
- Compact, 100-Pin TQFP Package with Exposed Pad
- Evaluation Kit Available (Order MAX1438EVKIT)
- Multichannel Communications
- Ultrasound and Medical Imaging
|Part Number||Input Chan.||Resolution|
|Full Pwr. BW|
|Data Bus Interface||Package/Pins|
|max ≥||@ fIN||min||min||min||typ|
MAX1434EVKIT: Evaluation Kit for the MAX1434, MAX1436, MAX1437, and MAX1438
MAX1436EVKIT: Evaluation Kit for the MAX1434, MAX1436, MAX1437, and MAX1438
MAX1437EVKIT: Evaluation Kit for the MAX1434, MAX1436, MAX1437, and MAX1438
MAX1438EVKIT: Evaluation Kit for the MAX1434, MAX1436, MAX1437, and MAX1438
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C||Material Composition|
|Evaluation Board||4906||MAX1436EVKIT Evaluation Kit for the MAX1434, MAX1436, MAX1437, and MAX1438|
|Evaluation Board||4906||MAX1437EVKIT Evaluation Kit for the MAX1434, MAX1436, MAX1437, and MAX1438|
|Evaluation Board||4906||MAX1434EVKIT Evaluation Kit for the MAX1434, MAX1436, MAX1437, and MAX1438|
|Evaluation Board||4906||MAX1438EVKIT Evaluation Kit for the MAX1434, MAX1436, MAX1437, and MAX1438|
|Evaluation Board||4906||MAX1436_EVKIT Evaluation Kit for the MAX1434, MAX1436, MAX1437, and MAX1438|