Document
19-4794; Rev 0; 11/98
KIT ATION EVALU E L B A AVAIL
+5V Single-Supply, 1Msps, 14-Bit Self-Calibrating ADC
General Description Features
o Monolithic, 14-Bit, 1Msps ADC o +5V Single Supply o SNR of 80dB for fIN = 500kHz o SFDR of 87dB for fIN = 500kHz o Low Power Dissipation: 257mW o On-Demand Self-Calibration o Differential Nonlinearity Error: ±0.3LSB o Integral Nonlinearity Error: ±1.2LSB o Three-State, Two’s Complement Output Data
MAX1205
END_CAL
The MAX1205 is a 14-bit, monolithic, analog-to-digital converter (ADC) capable of conversion rates up to 1Msps. This integrated circuit, built on a CMOS process, uses a fully differential, pipelined architecture with digital error correction and a short self-calibration procedure that corrects for capacitor and gain mismatches and ensures 14-bit linearity at full sample rates. An on-chip track/hold (T/H) maintains superb dynamic performance up to the Nyquist frequency. The MAX1205 operates from a single +5V supply. The fully differential inputs allow an input swing of ±VREF. The reference is also differential, with the positive reference (RFPF) typically connected to +4.096V and the negative reference (RFNF) connected to analog ground. Additional sensing pins (RFPS, RFNS) are provided to compensate for any resistive-divider action that may occur due to finite internal and external resistances in the reference traces and the on-chip resistance of the reference pins. A single-ended input is also possible using two operational amplifiers. The power dissipation is typically 257mW at +5V, at a sampling rate of 1Msps. The device employs a CMOScompatible, 14-bit parallel, two’s complement output data format. For higher sampling rates, the MAX1201 is a 2.2Msps pin-compatible upgrade to the MAX1205. The MAX1205 is available in an MQFP package, and operates over the commercial (0°C to +70°C) and the extended (-40°C to +85°C) temperature ranges.
Ordering Information
PART MAX1205CMH MAX1205EMH TEMP. RANGE 0°C to +70°C -40°C to +85°C PIN-PACKAGE 44 MQFP 44 MQFP
Pin Configuration
TOP VIEW
44
43
42
41
40
39
38
37
36
35
Imaging Communications Medical Scanners Data Acquisition
ST_CAL AGND AVDD AGND AGND AVDD DOR D13 D12 D11 D10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 33 32 31 30 29 28 27 26 25 24 23
34
Applications
TEST0
INP RFNS RFNF
RFPS RFPF CM
INN N.C. N.C.
MAX1205
OE DAV CLK DVDD DGND DGND DVDD TEST1 TEST2 TEST3 D0
DGND D5
D4 D3 D2
D9 D8
________________________________________________________________ Maxim Integrated Products
D7 D6 DRVDD
MQFP
D1
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
+5V Single-Supply, 1Msps, 14-Bit Self-Calibrating ADC MAX1205
ABSOLUTE MAXIMUM RATINGS
AVDD to AGND, DGND ..........................................................+7V DVDD to DGND, AGND..........................................................+7V DRVDD to DGND, AGND .......................