MAX1205 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – +5v sINGLE-sUPPLY, 1mSPS, 14-bIT sELF-cALIBRATING adc

19-4794; Rev 0; 11/98
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+5V Single-Supply, 1Msps, 14-Bit
Self-Calibrating ADC
General Description
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 pro-
cess, uses a fully differential, pipelined architecture
with digital error correction and a short self-calibration
procedure that corrects for capacitor and gain mis-
matches 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
±V_REF. The reference is also differential, with the posi-
tive reference (RFPF) typically connected to +4.096V
and the negative reference (RFNF) connected to ana-
log ground. Additional sensing pins (RFPS, RFNS) are
provided to compensate for any resistive-divider action
that may occur due to finite internal and external resis-
tances in the reference traces and the on-chip resis-
tance 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 CMOS-
compatible, 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.
Features
o Monolithic, 14-Bit, 1Msps ADC
o +5V Single Supply
o SNR of 80dB for f_IN = 500kHz
o SFDR of 87dB for f_IN = 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
PART
MAX1205CMH
MAX1205EMH
Ordering Information
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
44 MQFP
44 MQFP
TOP VIEW
Pin Configuration
Imaging
Communications
Medical
Scanners
Data Acquisition
Applications
ST_CAL 1
AGND 2
AV_DD 3
AGND 4
AGND 5
AV_DD 6
DOR 7
D13 8
D12 9
D11 10
D10 11
MAX1205
33 OE
32 DAV
31 CLK
30 DV_DD
29 DGND
28 DGND
27 DV_DD
26 TEST1
25 TEST2
24 TEST3
23 D0
MQFP
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