Datasheet

MCP3204/3208
DS21298E-page 2 © 2008 Microchip Technology Inc.
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings†
V
DD
...................................................................................7.0V
All inputs and outputs w.r.t. V
SS
............... -0.6V to V
DD
+0.6V
Storage temperature .....................................-65°C to +150°C
Ambient temp. with power applied ................-65°C to +125°C
Soldering temperature of leads (10 seconds) .............+300°C
ESD protection on all pins.............................................> 4 kV
†Notice: Stresses above those listed under "Maximum
Ratings" may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operation listings of this specification is not implied. Exposure
to maximum rating conditions for extended periods may affect
device reliability.
ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise noted, all parameters apply at V
DD
= 5V, V
SS
= 0V, V
REF
= 5V,
T
A
= -40°C to +85°C,f
SAMPLE
= 100 ksps and f
CLK
= 20*f
SAMPLE
Parameters Sym Min Typ Max Units Conditions
Conversion Rate
Conversion Time t
CONV
— — 12 clock
cycles
Analog Input Sample Time t
SAMPLE
1.5 clock
cycles
Throughput Rate f
SAMPLE
—
—
—
—
100
50
ksps
ksps
V
DD
= V
REF
= 5V
V
DD
= V
REF
= 2.7V
DC Accuracy
Resolution 12 bits
Integral Nonlinearity INL —
—
±0.75
±1.0
±1
±2
LSB MCP3204/3208-B
MCP3204/3208-C
Differential Nonlinearity DNL — ±0.5 ±1 LSB No missing codes
over-temperature
Offset Error — ±1.25 ±3 LSB
Gain Error — ±1.25 ±5 LSB
Dynamic Performance
Total Harmonic Distortion — -82 — dB V
IN
= 0.1V to 4.9V@1 kHz
Signal to Noise and Distortion
(SINAD)
—72 — dBV
IN
= 0.1V to 4.9V@1 kHz
Spurious Free Dynamic
Range
—86 — dBV
IN
= 0.1V to 4.9V@1 kHz
Reference Input
Voltage Range 0.25 — V
DD
VNote 2
Current Drain —
—
100
0.001
150
3.0
µA
µA CS
= V
DD
= 5V
Analog Inputs
Input Voltage Range for CH0-
CH7 in Single-Ended Mode
V
SS
—V
REF
V
Input Voltage Range for IN+ in
pseudo-differential Mode
IN- — V
REF
+IN-
Note 1: This parameter is established by characterization and not 100% tested.
2: See graphs that relate linearity performance to V
REF
levels.
3: Because the sample cap will eventually lose charge, effective clock rates below 10 kHz can affect linearity
performance, particularly at elevated temperatures. See Section 6.2 “Maintaining Minimum Clock
Speed”, “Maintaining Minimum Clock Speed”, for more information.