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MAX1121
1.8V, 8-Bit, 250Msps Analog-to-Digital Converter with LVDS Outputs for Wideband Applications
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Status
Active: In Production.
Description
The MAX1121 is a monolithic 8-bit, 250Msps analog-to-digital converter (ADC) optimized for outstanding dynamic performance at high IF frequencies up to 500MHz. The product operates with conversion rates of up to 250Msps while consuming only 477mW.
At 250Msps and an input frequency of 100MHz, the MAX1121 achieves a spurious-free dynamic range (SFDR) of 68dBc. Its excellent signal-to-noise ratio (SNR) of 48.9dB at 10MHz remains flat (within 0.5dB) for input tones up to 500MHz. This makes the MAX1121 ideal for wideband applications such as digital predistortion in cellular base-station transceiver systems.
The MAX1121 requires a single 1.8V supply. The analog input is designed for either differential or single-ended operation and can be AC- or DC-coupled. The ADC also features a selectable on-chip divide-by-2 clock circuit, which allows the user to apply clock frequencies as high as 500MHz. This helps to reduce the phase noise of the input clock source. A differential LVDS sampling clock is recommended for best performance. The converter's digital outputs are LVDS compatible, and the data format can be selected to be either two's complement or offset binary.
The MAX1121 is available in a 68-pin QFN with exposed pad (EP) and is specified over the industrial (-40°C to +85°C) temperature range.
For pin-compatible, higher resolution versions of the MAX1121, refer to the MAX1122 (170Msps), the MAX1123 (210Msps), and the MAX1124 (250Msps) data sheets.
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Data Sheet
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An evaluation kit is available: MAX1124EVKIT
Key Features
- 250Msps Conversion Rate
- SNR = 48.8dB/48.7dB at fIN = 100MHz/500MHz
- SFDR = 68dBc/63.8dBc at fIN = 100MHz/500MHz
- Single 1.8V Supply
- 477mW Power Dissipation at 250Msps
- On-Chip Track-and-Hold and Internal Reference
- On-Chip Selectable Divide-by-2 Clock Input
- LVDS Digital Outputs with Data Clock Output
- Evaluation Kit Available (Order MAX1124EVKIT)
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Applications/Uses
- Communications Test Equipment
- Digital Oscilloscopes
- Digital Predistortion Receivers
- Instrumentation
- Radar and Satellite Subsystems Antenna Array Processing
- Wireless and Wired Broadband Communication
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Key Specifications:
| High-Speed ADCs (> 5Msps) |
| Part Number |
Input Chan. |
Resolution
(bits) |
Sample Rate
(Msps) |
AC Specs
(MHz) |
SFDR
(dBc) |
SINAD
(dB) |
SNR
(dB) |
INL
(±LSB) |
DNL
(±LSB) |
Full Pwr. BW
(MHz) |
ICC
(mA) |
Data Bus Interface |
Smallest Available Pckg.
(mm2) |
| max ≥ |
@ fIN |
min |
min |
typ |
max w/pins |
| MAX1121 |
1 |
8 |
250 |
180 |
69.1 |
48.7 |
48.8 |
0.2 |
0.1 |
600 |
265 |
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100 |
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See All High-Speed ADCs (> 5Msps) (75)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Block Diagram
Application Notes
Product Guides
Reliability Reports
| Request Reliability Report for: |
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Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX1121EGK+D
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Active |
QFN;68 pin;100 mm²
Outline Drawing:21-0122 (PDF)
Land Pattern: 90-0245 (PDF)
Use pkgcode/variation: G6800+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1121EGK+TD
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Active |
QFN;68 pin;100 mm²
Outline Drawing:21-0122 (PDF)
Land Pattern: 90-0245 (PDF)
Use pkgcode/variation: G6800+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1121EGK-D
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Active |
QFN;68 pin;100 mm²
Outline Drawing:21-0122 (PDF)
Land Pattern: 90-0245 (PDF)
Use pkgcode/variation: G6800-4*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX1121EGK-TD
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Active |
QFN;68 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Similar Products by Function
| MAX1122 |
1.8V, 10-Bit, 170Msps Analog-to-Digital Converter with LVDS Outputs for Wideband Applications |
| MAX1123 |
1.8V, 10-Bit, 210Msps Analog-to-Digital Converter with LVDS Outputs for Wideband Applications |
| MAX1124 |
1.8V, 10-Bit, 250Msps Analog-to-Digital Converter with LVDS Outputs for Wideband Applications |
| MAX1213 |
1.8V, 12-Bit, 170Msps ADC for Broadband Applications |
| MAX1215 |
1.8V, 12-Bit, 250Msps ADC for Broadband Applications |
| MAX1214 |
1.8V, 12-Bit, 210Msps ADC for Broadband Applications |
| MAX1213N |
1.8V, Low-Power, 12-Bit, 170Msps ADC for Broadband Applications |
| MAX1214N |
1.8V, Low-Power, 12-Bit, 210Msps ADC for Broadband Applications |
| MAX1215N |
1.8V, 12-Bit, 250Msps ADC for Broadband Applications |
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Similar Products by Application
Evaluation Kits
More Information
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Information Index
Document Ref.: 19-3077
Rev 2;
2008-09-18
This page last modified: 2009-10-08
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