Rainbow Electronics MAX1205 - Manual

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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.
Applications
Imaging
Communications
Medical
Scanners
Data Acquisition
Features
♦ Monolithic, 14-Bit, 1Msps ADC
♦ +5V Single Supply
♦ SNR of 80dB for f IN = 500kHz
♦ SFDR of 87dB for f IN = 500kHz
♦ Low Power Dissipation: 257mW
♦ On-Demand Self-Calibration
♦ Differential Nonlinearity Error: ±0.3LSB
♦ Integral Nonlinearity Error: ±1.2LSB
♦ Three-State, Two’s Complement Output Data
MAX1205
+5V Single-Supply, 1Msps, 14-Bit
Self-Calibrating ADC
________________________________________________________________ Maxim Integrated Products 1
OE
DAV
CLK
DV
DD
DGND
DGND
DV
DD
TEST1
TEST2
TEST3
D0
ST_CAL
AGND
AV DD
AGND
AGND
AV DD
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
44 43 42 41 40 39 38 37 36 35 34
33
32
31
30
29
28
27
26
25
24
23
D9 D8 D7 D6
DRV
DD
DGND
D5 D4 D3 D2 D1
END_CAL INN N.C. N.C. INP RFNS RFNF RFPS RFPF CM TEST0
TOP VIEW
MQFP
MAX1205
19-4794; Rev 0; 11/98
PART
MAX1205CMH
MAX1205EMH -40°C to +85°C
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
44 MQFP
44 MQFP
EVALUATION KIT
AVAILABLE
Pin Configuration
Ordering Information